Solid attenuator arm 5 limit switch, posted by Antje Trapp on 30 Jul 2024, 10:38 6x
|
On 27th of July, it was reported that arm 5 of the solid attenuator did not stay in 'out' position when retracted, but moved
in immediately again.
Reason was, that the limit switch for the 'out'-position did not trigger, and thus the actuator was in error state. Default for error |
Issue, posted by Jan Gruenert on 18 Apr 2024, 23:19
|
22h55:
HED informs that they have issues with the HED pulse picker in XTD6. It affects the ongoing experiment, but not to an extent that they cannot continue
the beamtime. |
end of shift summary, posted by Antje Trapp on 26 Jan 2024, 15:24
|
Vertical motors of M3 now calibrated in first iteration and gemetrical neutral calibrated to 0 in motor settings!!!
New HED positions saved in XRO setpoints 'C'
euler calibration not completed for M3 |
end of shift summary, posted by Antje Trapp on 25 Jan 2024, 14:57
|
It was possible to align to HED in parasitic mode to seeding tests
mirror horizontal position (coating stripes) was optimized as far as possible under parasitic conditions
vertical motors calibration and EulerMDL calibration still to be done - collimated beam needed for that. |
scanning for HED beam, posted by Antje Trapp on 24 Jan 2024, 14:00
|
We found reflection of M3 on M2 popin, but could not locate the beam on HED PBLM nor HED_XTD6_SDLBM-1
scanning both horizontally and vertically around previously saved positions on M3 popin.
managed to get beam through to sdlbm-1. No beam found downstream of that. |
Status, posted by Jan Gruenert on 28 Nov 2023, 19:36
|
Ramp down activities completed by XPD. References:
SASE1
https://in.xfel.eu/elog/SASE1+technical+commissioning/2204
https://in.xfel.eu/elog/SASE1+technical+commissioning/2205
https://in.xfel.eu/elog/SASE1+technical+commissioning/2206
SASE2
https://in.xfel.eu/elog/SASE2+technical+commissioning/1206
...until...
https://in.xfel.eu/elog/SASE2+technical+commissioning/1209
SASE3
https://in.xfel.eu/elog/SASE3+technical+commissioning/2220
https://in.xfel.eu/elog/SASE3+technical+commissioning/2221
The
XFEL photon beam was switched off as planned at 19h00 sharp. |
Shift summary, posted by Adam Round on 26 Nov 2023, 23:26
|
X-ray delivery
16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
800 uJ
Beam pointing and corrected
with M2 Ry piezo stepping optimizing scatering intensity seen on JF4M
Optical laser delivery |
Shift summary, posted by Chan Kim on 25 Nov 2023, 23:45
|
X-ray delivery
16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
800 uJ
Beam pointing and stability
issues towards end of shift (again)
Optical laser delivery |
other, posted by Chan Kim on 25 Nov 2023, 19:56
|
Beam drift in the horizontal direction (XTD9_XGM).
From ~16:00, X-ray beam started to drift in the horizontal direction. In total, ~0.3 mm drift observed within 2-3 hours.
|
Shift summary, posted by Chan Kim on 24 Nov 2023, 23:11
|
X-ray delivery
16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
900 uJ
Beam pointing and stability
issues towards end of shift
Optical laser delivery |
other, posted by Chan Kim on 24 Nov 2023, 20:48
|
Beam drift in the horizontal direction (XTD9_XGM x position) started at around 10am and continuously drifted until 16:00.
After then, beam has been drifted back to original position within 4 hours. |
Sample Camera got stuck (likely at 11pm) and was only noticed at 5am, posted by Bjoern Senfftleben on 24 Nov 2023, 05:07
|
After going in and reconnecting the camera, we observe att. 1.
According to logs the camera device server was restarted around 11pm, however the camera instance was never reinstantiated after the restart. |
Shift end, posted by Adam Round on 23 Nov 2023, 23:12
|
Staff: AR, MS, DM, KK, RL, RdW
X-ray delivery
16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
900 uJ
Beam down around 1h
Optical |
Shift summary, posted by Jörg Hallmann on 23 Nov 2023, 22:15
|
progress with the Damnit - XPCS analysis test with various samples (SiO2, Ludox etc.)
tested some external samples P3HT, SOD1 but it looks like conventional XPCS is not working (signal too low - increasing transmission leads to
radiation damage in both cases) |
Shift summary, posted by Raphael de Wijn on 22 Nov 2023, 23:18
|
X-ray delivery
16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
700-800 uJ
stable delivery
Optical
laser delivery |
Shift summary, posted by Johannes Moeller on 22 Nov 2023, 22:48
|
*Tests for online XPCS pipeline ongoing
*beam optimization with power slits, current beam size 8x13um (v x h), we assign the larger value in the horizontal direction to jitter
*Movement of the AGIPD quadrants to increase q range to lower values |
Issue, posted by Johannes Moeller on 22 Nov 2023, 10:19
|
The Si 0.5mm absorber of XTD1 attenuator seems to be damaged. First screenshot is with that one inserted. In the second screenshot, it is replaced with
a Si 0.5mm from MID_XTD6_ATT.
|
Shift end, posted by Adam Round on 21 Nov 2023, 23:29
|
Staff: AR, MS, DM, RL, RdW
X-ray delivery
16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
stable delivery
Optical |
Shift end, posted by Jayanath Koliyadu on 20 Nov 2023, 07:12
|
X-ray delivery
1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 19 Nov 2023, 06:54
|
X-ray delivery
1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 18 Nov 2023, 06:42
|
X-ray delivery
1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 17 Nov 2023, 06:55
|
X-ray delivery
1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 16 Nov 2023, 06:56
|
X-ray delivery
1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift end, posted by Jayanath Koliyadu on 15 Nov 2023, 07:10
|
X-ray delivery
1.3-1.7 mJ, 1-30 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
shift summary, posted by Loic Le Guyader on 13 Nov 2023, 07:16
|
# Shift Summary
Achievements
- Measured elastic line with 3000 l/mm and 1000 l/mm grating on NiO sample |
Night shift summary, posted by Benjamin van Kuiken on 12 Nov 2023, 07:24
|
# Shift Summary
Achievements
- Found RIXS signal from CuO as well as off-resonant elastic line signals from NiO and CoO |
SA2 status, posted by Jan Gruenert on 10 Nov 2023, 17:39
|
End of 30 keV study
The machine finished their attemps for 30 keV tuning while using NEPAL injector laser, unfortunately unsuccessful.
They could not obtain lasing, and all the pulse energy shown during the day on the level of about 20 uJ was only background, no lasing (as |
Euler MDL bugfix - motor velocities restored after stop, posted by Antje Trapp on 10 Nov 2023, 14:10
|
The Euler MDL was updated, so that velocities are restored to standard values also after the stop button was hit before motion was finished.
Please be aware that due to the synchronized motion, which is neccessary to keep the beam on the screen, some motors may move for a longer time
with very slow speed (main reason - backlash compensation). We are working on a solution with a minimum speed. |
KW44 - Leak in Solid Attenuator, posted by Janni Eidam on 07 Nov 2023, 15:57
|
There was a leak in the Solid Attenuator that increased on Saturday morning when SPB moved the arm number 4 (see last entry ID 236).
We were lucky that a balance developed between the leak and the pumping of the ion pumps, so by setting the setpoints of the three most affected
ionpumps to 5x10-5 mbar we could survive the weekend and save the beamtime. |
Status, posted by Jan Gruenert on 05 Nov 2023, 16:14
|
Finally, we're completely back in operation,
and the performance is recovered in all beamlines.
See also ttfinfo, e.g. https://ttfinfo.desy.de/XFELelog/show.jsp?dir=/2023/44/05.11_a&pos=2023-11-05T16:01:25 |
Issue, posted by Jan Gruenert on 05 Nov 2023, 12:47
|
North branch down : another e-beam magnets problem
RC informs 12h45 that the linac and the south branch are back in operation and performance is as before the issues with the A21 quadrupole.
However, during the access to XTL, additional manget problems occurred in the T4 and SA3 section. |
Issue, posted by Jan Gruenert on 05 Nov 2023, 12:18
|
Accelerator down 9h23 - 12h
RC / BKR informs (10am), that due to a quadrupole power supply failure in A21 a tunnel access to XTL is required.
After the XTL intervention finished, BKR started beam in SA2 at 12h09. |
Shift summary, posted by Angel Rodriguez Fernandez on 05 Nov 2023, 04:08
|
stable SASE beam delivery with 1mJ pulse energy
we took data for different optical laser excitation fluences and delays
we
changed from the optical lock to the electronic lock to measure also longer delays.
|
Issue, posted by Jan Gruenert on 04 Nov 2023, 13:49
|
(Temporary) solution for the vacuum incident in SA1
This morning at 7h18 the vacuum interlock of SA1 closed the beamline valves and thus stopped the XFEL beam delivery for SA1 and
SA3. |
Issue, posted by Jan Gruenert on 04 Nov 2023, 08:15
|
Beam down for SASE1/3: SASE1 XTD2 vacuum issue
Vacuum interlock of the SA1 / XTD2 solid attenuator area triggered closing beamline gatevalves.
VAC-OCD is investigating. No beam possible for SA1/SA3 since 7h18. |
Shift summary, posted by Johannes Moeller on 04 Nov 2023, 02:29
|
Stable delivery of SASE at 18 keV. The intensity dropped slightly from 1mJ to 0.88mJ during the evening, but everything good.
fixed
the laser pulse-on-demand + FSSS scanning macro
We take some images series of the laser drilling process for different laser fluences
We
started to take first time resolved data
|
Shift summary, posted by Johannes Moeller on 03 Nov 2023, 02:08
|
stable 18 keV SASE delivery
measurement of siemens star in the morning
alignment of phase plate for the nano focussing
lenses
testing and debugging of the pulse on demand macro
holography test measurements and optimization of online analysis
alignment
of user samples
Problems: |
Shift summary, posted by Chan Kim on 02 Nov 2023, 23:25
|
X-ray delivery
19 keV, ~0.9 mJ/pulse, stable delivery
Optical laser delivery
no
Achievements/Observations |
Status, posted by Jan Gruenert on 02 Nov 2023, 19:37
|
Typical delivery status during daytime during the week:
SA1 at 19 keV : 841 uJ +/- 41 uJ
SA2 at 18 keV : 990 uJ +/- 80
uJ
SA3 at 3.0 keV : 2900 uJ +/- 138 uJ
SD for a stable 2 hours long interval, fast XGM train |
Shift summary, posted by Johannes Moeller on 02 Nov 2023, 02:28
|
stable delivery of 1mJ SASE at 18keV
NAFO lens characterization with caustic scan
successful detector calibration of AGIPD
with LaB6 and alignment of Jungfrau to diffraction signal with LaB6
test of ptychography with 18keV (not successful)
successful setup
of online holography analysis with test measurements
|
Shift summary, posted by Chan Kim on 01 Nov 2023, 22:57
|
X-ray delivery
19 keV, ~0.9 mJ/pulse, stable delivery
Optical laser delivery
no
Achievements/Observations |
Shift summary, posted by Johannes Moeller on 01 Nov 2023, 02:22
|
stable delivery of 1mJ at 18keV SASE
succesful beamline alignment for MID (CRLs + M1 and M2) with mono.
alignment of NAFO
stack to DES and zyla camera with SASE and monochromatic beam
setup of DES spectrometer for 18keV on 440 reflection with SASE
timing
of PP laser with perpendicular excitation condition with diode and YAG
Problems: |
Shift summary, posted by Chan Kim on 31 Oct 2023, 23:08
|
X-ray delivery
19keV, 700-800uj
Optical laser delivery
ns laser
Achievements/Observations |
Status, posted by Jan Gruenert on 30 Oct 2023, 23:18
|
At the end of the MON late shift, the tuning status and obtained lasing pulse energies (ATT#1) are as follows:
SA1 at 19 keV : 660 uJ +/- 23 uJ
SA2 at 18 keV : 1073 uJ +/- 55 uJ
SA3 at
1.2 keV : 4330 uJ +/- 122 uJ
SD for a stable 2 min interval, fast XGM train average (INTENSITY.RAW.TRAIN) |
Issue, posted by Jan Gruenert on 30 Oct 2023, 14:36
|
The EPD reading system at the turnstiles of XTD10 entrance were not working this morning.
A necessary ZZ access to XTD10 could not be performed in the morning and had to be postponed.
Resetting the system by Michael Prollius was not sufficient. |
Shift summary, posted by Raphael de Wijn on 30 Oct 2023, 07:10
|
X-ray delivery
7.8keV, ~2.5mj, no beam before 1:15am
One undulator was not moving, expert was called
Optical laser
delivery |
Shift summary, posted by Konopkova Zuzana on 28 Oct 2023, 14:52
|
Beam parameters: 18 keV, 1 pulse, 600 uJ
- user beamtime started Friday, the 27th and going smoothly until now and we are in data collection mode
- shock compression setup with XRD and DiPOLE |
Shift summary, posted by Chan Kim on 27 Oct 2023, 06:35
|
X-ray delivery
7.8keV, 2.5mj, stable delivery, homogeneos intra train energy most of the time.
Optical laser delivery
ns laser for particle imaging
Achievements/Observations |
Issue, posted by Chan Kim on 27 Oct 2023, 03:19
|
We observed auto changes of the number of X-ray pulses last night and tonight.
It is related to 500 um thick Si attenuator in XTD2_ATT.
Even with 2.4 mm thick CVD (XTD2_ATT) IN, the number of pulses @SA1 changes to 28 whenever we insert 500 um thick Si attenuator. |
Late shift summary, 26.10.2023, posted by Robert Carley on 26 Oct 2023, 23:25
|
Achievements:
Continued with tr-RIXS
No problems
|
Morning shift summary, 26.10.2023, posted by Sergii, Teguh on 26 Oct 2023, 15:03
|
Morning shift summary, 26.10.2023
Achievements:
Continued measuring tr-RIXS at different laser fluences
Problems:
The max-jhub notebook server was very slow this morning around 9-10 h. DOC was informed, but the slowness has improved without any action |
night shift summary, posted by Andreas Scherz / Eugenio Paris on 26 Oct 2023, 07:13
|
Night shift summary
Achievements:
- Recovered time0 on SiN (time0 moved >20ps after FEL beam loss in the evening) |
Shift summary, posted by Chan Kim on 26 Oct 2023, 07:10
|
X-ray delivery
7.8keV, 2.4mj, stable delivery, homogeneos intra train energy most of the time.
Optical laser delivery
ns laser for particle imaging
Achievements/Observations |
Shift summary 25.10.2023, posted by Diogo Filipe Monrroy Vilan e Melo on 26 Oct 2023, 06:48
|
Staff: DM, CK, KK, JB, SR (SEC), LW (Uppsala university), MM (GU)
X-ray delivery
7.8keV, 2.4mj, stable delivery, homogeneos intra train energy most of the time.
Optical laser delivery |
Morning Shift Summary, 25.10.2023, posted by Sergii, Teguh on 25 Oct 2023, 15:18
|
Morning Shift Summary, 25.10.2023
Achievements:
Re-aligned FEL beam pointing and beamline mirrors after XGM intensity drop due to slow beam pointing drift over night.
Continued
taking momentum-dependent tr-REXS data.
Problems: |
Morning Shift Summary, 24.10.2023, posted by Sergii, Teguh on 25 Oct 2023, 15:10
|
Morning Shift Summary, 24.10.2023
Achievements:
Re-aligned the beamline after maintenance
Found time zero using SiN at 300 K
Change the He dewar and cooled down
back to 20 K
Adjusted the AFS laser parameters to recover the proper experiment settings
Started taking tr-RIXS with several time |
other, posted by Chan Kim on 25 Oct 2023, 06:02
|
Issue solved (elog:410) after changing NKB mirror coating to B4C.
|
Shift Summary, posted by Diogo Filipe Monrroy Vilan e Melo on 25 Oct 2023, 06:02
|
Staff: DM, CK, KK
X-ray delivery
7.8keV, 2.4mj, stable delivery, homogeneos intra train energy most of the time.
SASE 3 background
Optical |
Issue, posted by Chan Kim on 25 Oct 2023, 04:48
|
SA3 background is very strong and it affects our NKB (nano KB, Ru coating) focus.
Attachment 1: optimized NKB focus with 1 pulse @SA3 |
SASE 3 background heavily impacts our focus, posted by Diogo Filipe Monrroy Vilan e Melo on 25 Oct 2023, 02:43
|
Attch 1: We were having trouble focusing at IRU chamber. After multiple attempts the best we could achieve was 2.9-3.1 um beam.
Attch 2: We then wanted to test if this was caused by the SASE 3 background, after them changing from >350 pulses to 1, we saw an instant
improvement of ~0.5um down to 2.3 um beamsize. |
Issue, posted by Thomas Preston on 24 Oct 2023, 19:26
|
Vacuum issue at HED
At 18:26 the vacuum failed in the HED CRL3 chamber in the OPTs hutch. The vacuum failed in the section and tripped the valves in the OPT hutch;
it went from 1e-8 to 5 mbar in seconds. The leak is confined to the CRL chamber -- the sections upstream and downstream are not compromised and still have |
Night shift summary, 23.10.2023, posted by Laurent Mercadier on 23 Oct 2023, 06:46
|
|
Shift summary, posted by Raphael de Wijn on 23 Oct 2023, 05:15
|
X-ray delivery
13.6 keV, ~1.6 mJ and up to 352 pulses at 1.1 MHz.
Beam down from 10:30 to 19:00.
Optical laser
delivery |
Late shift summary 22.10.2023, posted by Sergii , Giacomo on 23 Oct 2023, 01:38
|
Achievements
-Check XAS and static RIXS after the beam was back
-Do the warm up cycle to remove ice from the sample surface |
Shift summary, posted by Alexey Zozulya on 23 Oct 2023, 01:10
|
Milestones:
*Finish measurement program on the STO sample at room temperature
*Check mono fpitch and energy rocking curve |
Shift summary, posted by Benjamin van Kuiken on 22 Oct 2023, 13:21
|
Morning shift Summary 22.10.2023
Achievements
Checked beam alignment and overlap
confirmed sample integrity with static rixs on other sample locations
Problems |
night shift summary, 22.10.2023, posted by Laurent, Phuong on 22 Oct 2023, 07:34
|
Night shift summary 22.10.2023
Laurent, Phuong
Achievement:
-Collecting static RIXS data at different FEL repitition rates |
Shift summary, posted by Raphael de Wijn on 22 Oct 2023, 00:27
|
X-ray delivery
13.6 keV, ~1.6 mJ and up to 352 pulses at 1.1 MHz.
Beam down until around 1PM.
After agreement with FXE, we could
collect data until midnight.
Optical laser delivery |
Late shift summary 21.10.2023, posted by Sergii, Giacomo on 21 Oct 2023, 23:34
|
Achievements:
-Collecting TR-RIXS data for different fluencies and delay range
Problems |
Shift Summary, posted by Benjamin van Kuiken on 21 Oct 2023, 15:34
|
# Morning Shift Summary 21.10.23
Ben, Eugenio
Achievements |
Night shift summary 21.10.2023, posted by Laurent, Phuong on 21 Oct 2023, 06:30
|
Night shift summary 21.10.2023
Achievements
Found T0 on SiN, but the response is very slow (~10 ps).
Azimuth (phi) scan
Start of theta scan with optimized
phi
Problems |
Late Shift Summary on 20.10.2023, posted by Sergii, Giacomo on 20 Oct 2023, 23:22
|
Late shift summary 20.10.2023
Achievements
-Switched AFS to burst mode
-Characterized PPL beam size |
Shift summary, posted by Romain Letrun on 20 Oct 2023, 23:10
|
X-ray delivery
13.6 keV, ~1.6 mJ and up to 352 pulses at 1.1 MHz.
Beam down at 22:47, not recovered before the end of the shift. Otherwise
stable delivery.
Optical laser delivery |
Morning Shift Summary, posted by Benjamin van Kuiken on 20 Oct 2023, 15:22
|
Achievements
Tested MCPs and APD for XAS
Both MCPs give a good XAS spectrum with no amplification, but small MCP requires higher bias
voltage
No fluorescence signal observed on the APD
Measured XAS of both samples
Measured static RIXS |
Shift end, posted by Jayanath Koliyadu on 19 Oct 2023, 23:30
|
X-ray delivery
13.6 keV, ~1.7 mJ and up to 352 pulses at 1.1 MHz
Optical laser delivery
PP laser, 1 to 202 pulses, stable delivery except for the down time of ~1h
Achievements/Observations |
Shift summary, posted by Raphael de Wijn on 18 Oct 2023, 23:19
|
X-ray delivery
13.6 keV, ~1.8 mJ and up to 352 pulses at 1.1 MHz
Optical laser delivery
PP laser, amphos laser computer in error for ~2h
Achievements/Observations |
Shift summary, posted by Alexey Zozulya on 18 Oct 2023, 02:09
|
Shift summary (p4239)
Achievements:
- HXSS beam at 10.5 keV at 400 uJ pulse energy |
Shift summary, posted by Raphael de Wijn on 17 Oct 2023, 23:23
|
X-ray delivery
13.6 keV, ~1.6 mJ and up to 202 pulses at 0.5 MHz
Optical laser delivery
PP laser, stable delivery
Achievements/Observations |
Experiment summary, posted by Konopkova Zuzana on 16 Oct 2023, 05:05
|
Beam parameters: 18.8 keV, 350-600 uJ, 1 pulse
Experiment: Shock compression experiments using DiPOLE 70 J + XRD
- run through most of the users targets, largely succesful |
Shift summary, posted by Konopkova Zuzana on 15 Oct 2023, 04:43
|
the initial 600-700 uJ of pulse energy at the beginning of the user beamtime dropped down to 300-350 uJ over night from 14th to 15th. The operators
did not seem to be able to bring the pulse energy above 500 uJ, which is where it was after the RC's intervention in the morning. Is it possible to
bring up the energy in the morning?
|
Status, posted by Frederik Wolff-Fabris on 14 Oct 2023, 09:48
|
Machine went down overnight (4AM and 6AM) and could not be properly restarted by BKR.
Ongoing tuning is proceeding with RC onsite since 6AM; Instruments are informed and in direct contact to BKR.
Status 09:45AM: SA1 ~3mJ; SA2: ~500uJ; SA3 being restarted |
Shift summary, posted by Chan Kim on 14 Oct 2023, 04:04
|
X-ray delivery
7.8 keV, up to 260 pulses at 1.1MHz, ~3 mJ
Optical laser delivery
PP laser, stable delivery
Achievements/Observations |
Issue, posted by Theophilos Maltezopoulos on 13 Oct 2023, 10:19
|
An XGM has two single-shot detectors, XGMD and HAMP.
The XTD2 XGMD amplifiers are damaged, thus I operate the XTD2 XGM with HAMP, which I usually use at > 18 keV.
In summary, the XTD2 XGM is fully operational, but I do not have a spare detector any more! Thus, a ZZ is organized for Monday 16.10. around |
Shift summary, posted by Chan Kim on 13 Oct 2023, 07:06
|
X-ray delivery
7.8 keV, up to 260 pulses at 1.1MHz, >4 mJ
Optical laser delivery
PP laser was down since 00:48.
Achievements/Observations |
Shift summary 11.10.2023, posted by Tokushi Sato on 12 Oct 2023, 02:00
|
Staff: JK, CK, KL, AS
X-ray delivery
8.4 keV, up to 260 pulses at 1.1MHz, 3.5 mJ
Optical laser delivery |
Shift summary, posted by Abhisakh Sarma on 11 Oct 2023, 06:22
|
X-ray delivery
7.8 keV, up to 30 pulses at 94 kHz, 3 mJ
Optical laser delivery
No laser
Achievements/Observations |
Shift end, posted by Harald Sinn on 03 Oct 2023, 22:58
|
End of Euler shift: all 3 SASE2 mirrors are now working with the Euler MDL.
We left the beamline aligned to HED, with M1,M2 on Pt for upcoming HED experiment at 18 keV.
Pre-absorber closed, CRL1 out, Solid attenuater with some diamonds. |
Euler calibration and Mirror setpoints, posted by Antje Trapp on 03 Oct 2023, 22:51
|
euler MDL was calibrated for all three mirrors.
Optics setpoints saved in XRO setpoints for MID and HED
|
M3 vertical motors calibration - EulerMDL, posted by Antje Trapp on 02 Oct 2023, 21:48
|
Second iteration and sanitty test for vertical mirror motion (Y) and vertical beam alignment (ROLL)
Vertical motors were calibrated and offsets saved in Euler MDL (no calibration of motors done so far - this should be performed during ramp up
after WMP) |
Shift summary, posted by Tokushi Sato on 01 Oct 2023, 23:06
|
X-ray delivery
6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz
Optical laser delivery
PP laser, 1030 nm, 352 pulses at 1.1 MHz, stable delivery
ns laser for rayleigh scattering, stabe delivery
Achievements/Observations |
Morning shift summary, posted by Giuseppe Mercurio on 01 Oct 2023, 14:48
|
# Morning shift summary
Giuseppe, Martin
* achievements |
Shift summary, posted by Johannes Moeller on 01 Oct 2023, 02:00
|
HXRSS at 8.8 keV, 1, 60 or 350 pulses. Quite stable seeding performance
loaded new sample (HGW) in the morning
measured full temperature series on HGW during the day
problem with vacuum
in the cryostat-chamber, which triggered the interlocked during the data taking and blocked AGIPD for some temperatures
focussing optimized |
Shift summary, posted by Tokushi Sato on 30 Sep 2023, 23:08
|
X-ray delivery
6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz
Optical laser delivery
PP laser, 1030 nm, 352 pulses at 1.1 MHz, stable delivery
ns laser for rayleigh scattering, stabe delivery
Achievements/Observations |
Issue, posted by Romain Letrun on 30 Sep 2023, 10:11
|
On multiple occasions this morning, the number of bunches was reduced to 1 without actions from our side.
Looking at the history of SA1_XTD2_BUNCHPATTERN/MDL/CONFIGURATOR, we noticed changes were applied by this device, presumably originating from
one of the watchdogs in SA1. This kind of silent changes is particularly inconvenient and could be easy to miss if one is not constantly monitoring that |
Shift summary, posted by Tokushi Sato on 29 Sep 2023, 23:13
|
X-ray delivery
6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz
Optical laser delivery
PP laser, 1030 nm, 226 pulses at 1.1 MHz, stable delivery
ns laser for rayleigh scattering, stabe delivery
Achievements/Observations |
Shift summary, posted by Laurent Mercadier on 29 Sep 2023, 22:59
|
# Late shift summary 29.09.2023
Laurent, Phuong
## Achievements |
Shift summary, posted by Romain Letrun on 29 Sep 2023, 08:30
|
Shift sumary for 29.9.2023
X-ray delivery |
Shift summary, posted by Johannes Moeller on 29 Sep 2023, 00:35
|
1, 60 and 350 pulses at 8.7keV, HXRSS
*focus characterization CRL2 lens 3,5,6
*Si 20nm XPCS with 20 and 50 pulses to evaluate the contrast |
Shift summary, posted by Romain Letrun on 28 Sep 2023, 07:20
|
Shift summary for 27.9.2023
X-ray delivery
6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz
Optical laser delivery |
SCS Night Shift Summary, posted by Benjamin van Kuiken on 27 Sep 2023, 07:51
|
Achievements
Characterized optical laser spot at sample
Problems
FEL beam had very unstable intensity and spectrum. As a result no useful data could be collected during the night
FEL pointing |
Shift summary, posted by Romain Letrun on 27 Sep 2023, 07:24
|
Shift summary for 26.9.2023
X-ray delivery
6.3 keV, ~4 mJ, 1-352 pulses at 1.13 MHz
Great performance and stable delivery with few minor interruptions
Optical |
Shift summary, posted by Peter Zalden on 24 Sep 2023, 09:24
|
7:00 Power glitch during SPB operation - they were supposed to hand the beam back at 7:30h
Power glitch brought down FXE interlock system with beam stop monitor alarm that could not be reset
SA1 PPL running fine,
seems unaffected
9:10 Beam back in SA1, but still at 7 keV and cannot be changed by BKR to the req'd 5.8 keV, 94 kHz. |
Shift summary, posted by Peter Zalden on 24 Sep 2023, 09:16
|
Summary for sept., 23rd
6:55 SPB just handed the beam over to FXE when the power glitch killed the interlocks and brought down ACC
11:30 After a lot of communication with PRC, Wolfgang Clement and DOC, the beam is back in SA1. We request change to 5.5 keV |
Status, posted by Jan Gruenert on 24 Sep 2023, 08:05
|
8h05 Beam is switched back on in SASE2. HED ready for taking beam.
8h45 BKR is having problems to turn on SA2 beam. Not due to any
Beam actually went down in all beamlines today at 7:02 (for the records). |
summary of 23.09, posted by Natalia, Justina, Giacomo, Sergey, Ben, Eugenio, Teguh on 24 Sep 2023, 07:49
|
Around 6:55 there was a power glitch. Power in the experimental hutch and rack room went down in SASE3, error message in Xray interlock system and no
power for PP laser.
During morning TS turned the power on and interlock issues were solved by DESY. SCS could restart large part of SCS systems, however got help |
Shift summary, posted by Raphael de Wijn on 24 Sep 2023, 07:28
|
X-ray delivery
7 keV 202 pulses 1.6mJ stabel across train and throughout the shift
Beam down at 7am again, power glitch same as yesterday
Achievements/Observations
faster changover and alignment
YAG on nozzle worked
collected data the droplets in oil sample delivery method - |
Attention, posted by Jan Gruenert on 24 Sep 2023, 07:19
|
Again: power outage !
As yesterday, at around 7am, power was lost in Schendfeld at SASE3. No beam permission, accelerator in TLD mode.
SASE3 has no power, TS-OCD informed and on the way. BKR informs MKK to check cooling water pumps. |
Shift summary, posted by Motoaki Nakatsutsumi on 23 Sep 2023, 23:31
|
During the morning shift (7am - 3pm), we couldn't take any meaningful data due to the issue of power glitch which caused the beam permission error
(AIBS) and down of SASE2 Karabo / Online-GPFS due to the lack of cooling in the rack room.
During the late shift (3 pm - 11 pm), after these issues were solved thanks to PRC/DOC/ITDM/EEE at 5 pm..., we could get back in operation relatively |
Issue, posted by Jan Gruenert on 23 Sep 2023, 15:35
|
SASE2 :
The unavailability of karabo and possibly missing cooling water is a problem for the tunnel components as well.
XGM in XTD6 : server error since about 11am. We don't know about the status of this device anymore, neither from DOOCS or karabo. |
Status, posted by Jan Gruenert on 23 Sep 2023, 14:49
|
Update of power outage aftermath
Achieved by now / status
SASE1
beam delivery and FXE operating fine (beam back since about 11h30)
SASE3
SA3
getting beam since about 11h30, again difficulties / no beam between 12h30 - 13h34, currently ok.
SASE3 Optical PP laser issues since the morning. |
Issue, posted by Jan Gruenert on 23 Sep 2023, 08:50
|
Updates on power glitch
8h50 No feedback from TS-OCD (still not arrived at SASE3 / SCS ?). Phone is busy. Apparently they are busy working on it in the hall (confirmed
at 9h00). |
Issue, posted by Peter Zalden on 23 Sep 2023, 08:14
|
FXE interlock in fault state. See photo attached with original error message from 6:53h. It cannot be reset by acknowledging. BKR is informed and they
are contacting MPS OCD. |
Shift summary, posted by Oliver Humphries on 23 Sep 2023, 07:59
|
Shift summary from Monday 18th 7am until Saturday 7am
MONDAY
Aligned beamline until the beamstop. Macro for recovering mirror positions worked well. Minimal fine
tuning required.
Changed energy to 8.4 keV to align spectrometes on Ni kalpha emission.
Characterized focal spot of the x-rays at |
Issue, posted by Jan Gruenert on 23 Sep 2023, 07:31
|
7:23: RC info:
an electrical power glitch interrupted beam operation, machine down. DESY has power back
and accelerator is recovering beam towards TLD, but no beam possible into TLDs, apparently power issues in Schenefeld. |
Shift end, posted by Adam Round on 23 Sep 2023, 07:04
|
Staff:JK, RDW, AR
X-ray delivery
7 keV 202 pulses 1.7mJ stabel across train and throughout the shift
Optical laser delivery |
Status, posted by Jan Gruenert on 22 Sep 2023, 17:46
|
SASE3 gas supply alarm
SCS called the PRC at 17h04 due to a loud audible alarm in XHEXP1 and contacted also TS-OCD.
It turned out to be the gas supply system for SASE3, an electrical cabinet on the balcony level in the SE-corner of XHEXP1.
Actions taken by PRC: |
Shift summary, posted by Raphael de Wijn on 22 Sep 2023, 07:27
|
X-ray delivery
7 keV, 202 pulses, 564 kHz, ~1.3 mJ, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Benjamin van Kuiken on 22 Sep 2023, 06:51
|
Achievemnets
Characterized the X-ray and laser danage on the STO2LNO2
Problems
Cound not find fine timeing from XAS measurements performed on the sample
MCP sees 266 nm PP laser
SiN mesaurement |
SA1 status, posted by Jan Gruenert on 22 Sep 2023, 00:56
|
As agreed beforehand, PRC and SPB/SFX re-assessed the SA1 EPS power limit based on actual performance, required number of pulses and rep rate, at the
agreed SPB photon energy of 7 keV.
The actual lasing performance is on average 1.3 mJ / pulse at the current 7 keV. |
SA1 status, posted by Jan Gruenert on 21 Sep 2023, 09:24
|
Info by R.Kammering (mail 20.9.23 18h25), related to the SA1 intensity drops during large wavelength scans:
"We found some problematic part in the code of our wavelength control server.
After lengthy debugging session we (Lars F, Olaf H. and me) did find a workaround which seems to have fixed the problem. |
Issue, posted by Peter Zalden on 20 Sep 2023, 19:42
|
Connerning the phase shifter adjustment after undulator gap scan via karabo:
At 19:30 FXE tested the scan change via Karabo with BKR. When the energy was changed with step size of 100 eV, the intensity of X-ray stays unchanged.
This means the phase shifter adjusment is corrrected and it is working now. |
Shift end, posted by Jayanath Koliyadu on 20 Sep 2023, 02:09
|
X-ray delivery
7 keV, 2.1 mJ, stable delivery
Optical laser delivery
None
Achievements/Observations |
SA1 status, posted by Jan Gruenert on 19 Sep 2023, 18:58
|
Concerning SASE1:
Please note that for this week the "remote power limit" was set to 5 Watt in order to protect CRL1.
The photon energies this week are 5.5 keV (FXE, day) and up to 7keV (SPB/SFX, night). |
Issue, posted by Yifeng Jiang on 18 Sep 2023, 19:14
|
We found that the x-ray pulse energy dropped a lot when we changed the undulator from 5.5 keV to 5.45 keV. We called BKR to optimise it (attachment
1)
=> There is a problem with the phase shifter of the undulator. It stacks sometime. If the x-ray intensity drops, we need to ask BKR to optimise |
Issue, posted by Chan Kim on 15 Sep 2023, 14:54
|
Vacuum issue at XTD2 tunnel which might be triggered by SA1_XTD2_ATT Arm5 (1.2mm thick CVD diamond)
It happened once again at around 3pm. |
Shift summary, posted by Tokushi Sato on 14 Sep 2023, 23:03
|
X-ray delivery
1.1 mj, 564 kHz, 93 pulses, stable delivery
Optical laser delivery
50 fs, 860 nm as fundamental wavelength, 188 kHz
ns for illumination,
Achievements/Observations |
Summary: Night 13th and Day 14th, posted by Thomas Baumann on 14 Sep 2023, 16:49
|
The late shift on the 13th fixed remaining problems with the DLD and the calibration pipeline.
The night shift was then able to collect data on O2 using the two-color mode. Systematic studies were done at different photon energies for both
colors. This was done for full FEL intensity and 10%. |
Shift summary, posted by Tokushi Sato on 14 Sep 2023, 00:05
|
X-ray delivery
1.1 mj, 564 kHz, 93 pulses, stable delivery
Optical laser delivery
50 fs, 860 nm as fundamental wavelength, 188 kHz
ns for illumination,
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 13 Sep 2023, 02:18
|
X-ray delivery
0.5 mj, improved to 1.1 mj xray energy in the evening
Optical laser delivery
50 fs, 860 nm as fundamental wavelength, 188 kHz
ns for illumination,
Achievements/Observations |
Status, posted by Naresh Kujala on 09 Sep 2023, 15:03
|
Info from Machine RC (Lars):
----------------------------------------------------------------------------------------------------------------------------------------
Author: Froehlich |
Status, posted by Naresh Kujala on 09 Sep 2023, 11:36
|
- Due to the failure of the cryo cold compressor. The machine is down.
- Next update 9 pm today
Please do watch public display for status info. |
Status, posted by Naresh Kujala on 09 Sep 2023, 07:54
|
Info from MRC (Lars)
-----------------------------------------------------------------------------
The cryo crew reports that the cold compressor that failed is, alas!, |
Shift summary, posted by Erik Brambrink on 09 Sep 2023, 07:00
|
Data taken from 11 to cryo failure
Beam conditions stable
Timing scan for different energy
Operation stopped
after cryo failure
Cryo jet was heated up then
Improvements of optical diagnostics (far field monitor)
|
Shift summary, posted by Erik Brambrink on 08 Sep 2023, 06:22
|
Improved the alignment procedure:
Using the pin to make sure of the spatial overlap
SAXS signal is used to make sure
the pin is well centered on the X-ray beam path
YAG is only used in combination with ILM to fix with ~5 um precision the height of the beam
(moving CRLs on laser focus) and the temporal overlap.
|
Shift summary, posted by Andreas Scherz on 07 Sep 2023, 23:46
|
Shift summary 07.09.2023
Achievements:
1. found t0 on LSCO x=0.15 at pre-peak O K edge |
Shift summary, September 7 after nightshift, posted by Justine Schlappa, Guiseppe Mercurio on 07 Sep 2023, 07:24
|
Achievements:
- Optimized hRIXS settings for OK edge at 145 deg scattering angle, resolution of about 50 meV
- Transferred the user sample |
Shift Summary, posted by Ben, Andreas on 06 Sep 2023, 23:33
|
Achievements
Determined temporal overlap between the X-ray and laser
measured Ti L-edge XAS and RIXS on samples for Asamara beamtime
Problems
No problems
Plan for Next Shift |
Giuseppe, Justine, posted by Giuseppe Mercurio on 06 Sep 2023, 06:35
|
achievements:
- we found optimum hRIXS settings for 1020 eV but moving the detector arm
- we found optimum hRIXS settings for 920 eV but moving the detector arm, and then grating pitch and detect arm |
Shift summary, posted by Oliver Humphries on 05 Sep 2023, 22:33
|
Received the beam from day shift, aligned to beam stop (low signal due to 4m air scatter, only 700uJ upstream)
ZYLA5 camera was
having issues, restarted without rotating to limit dropped trains.
1.2mm CVD solid attenuator in SA2 seems to be damaged
We
have trouble with our SEPS interlock after changes last week
We are supposed to be able to close the shutter (upstream of CRL3) without removing |
Shift summary, posted by Wonhyuk Jo on 29 Aug 2023, 03:14
|
Shift summary for 29th of Aug.
- Conducted Time-resolved Bragg CDI experiment using 3rd harmonic pump laser.
- Collected coherent diffraction patterns from Perovskite-oxide nanocrystals for various time delay and laser fluence. |
Shift summary, posted by Tokushi Sato on 28 Aug 2023, 23:03
|
X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 2.3 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz
Achievements/Observations |
Shift summary, posted by Wonhyuk Jo on 28 Aug 2023, 02:14
|
Shift summary for 28th of Aug.
- Realigned the center of rotation.
- MID took the seeded beam at about 120 uJ around 4 p.m. after the long intervention. |
Shift summary, posted by Tokushi Sato on 27 Aug 2023, 23:09
|
X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 2.4 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz
Achievements/Observations |
Status, posted by Naresh Kujala on 26 Aug 2023, 18:02
|
Dear All,
Two important machine updates.
1) Still, the forecasted time for the start-up of the machine will be tomorrow morning. |
Status, posted by Naresh Kujala on 26 Aug 2023, 08:23
|
- Machine updates;
Saturday 1:30 hr Cold compressor failed. The initial estimation of downtime was 20 hr, later in today morning crew gave a new estimation of time
of 30 hr. So the machine will be switched on and beam delivery to instruments will be tomorrow morning. Today at 3 pm, I will get more information and |
Shift summary, posted by Felix Brausse on 26 Aug 2023, 02:07
|
Shift summary the 25th of Aug
Found laser and X-ray spatiotemporal overlap with Bi diffraction peak
Found a diffraction peak from STO nano particles
X-ray
dose test is ongoing |
Shift summary, posted by Tokushi Sato on 25 Aug 2023, 23:03
|
X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 2.7 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz
Achievements/Observations |
Shift summary, posted by Tommaso Mazza on 25 Aug 2023, 07:29
|
problems with machine operation
very low yield at 1.8keV, took ~2hrs tuning time to get 600uJ (linear taper)
SA3 cells opened without us knowing when hv was changed |
Shift summary, posted by Johannes Moeller on 25 Aug 2023, 06:20
|
Shift summary the 24th of Aug
MID takes the seeded beam about 200 uJ including SASE background.
Monochrometer is aligned.
Mono + CRL2 was tested.
Found
rough timing with a fast diode at the sample position
Finding the temporal overlap with Forsted YAG hasn't been done yet. The motor (PPODL) |
Shift summary, posted by Tokushi Sato on 24 Aug 2023, 22:51
|
X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 3.7 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 90 pulses @ 282 kHz
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 23 Aug 2023, 22:56
|
X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 3.7 mJ, beam intensity drop, missing last 10-20 pulses in train sometime
Optical
laser delivery |
Shift summary, posted by Tokushi Sato on 22 Aug 2023, 23:32
|
X-ray delivery
9.3 keV, up to 178 pulses at 564 kHz, 3.7 mJ, stable delivery
Beam delivery was started from 19:00
Optical
laser delivery |
Status, posted by Naresh Kujala on 22 Aug 2023, 18:15
|
Photon beam delivery status:
- Machine informed that beam will be handover to instruments SA1 (SPB/SFX) and SA3 (SXP) at 18.30hr
- Machine needs more time for SA2 and the next update will be at 20hr. |
SA1 status, posted by Naresh Kujala on 22 Aug 2023, 15:56
|
SA1 photon beam line status
- CRL1 lenses are in the beam.
- The shutter between XTD2 and XTD9 is closed (The reason is not known) |
SA1 status, posted by Naresh Kujala on 22 Aug 2023, 15:52
|
SA1 photon beam line status
- CRL1 lenses are in the beam.
- The shutter between XTD2 and XTD9 is closed (The reason is not known) |
Experiment summary, posted by Konopkova Zuzana on 21 Aug 2023, 04:31
|
beam: 7.7 keV seeded, ~300 uJ/pulse, 2.2 MHz, 20 pulses
user experiment finilized, IXS scans on Si, Al and Cu at different momentum transfer angles
measurements of plasmons in cold
material only
pulse energy increased slightly, however it is mostly in the SASE pedestal which is insufficient to caramelize the electrons into |
Noght shift sammary 18.08.2023, posted by Sergii, Manuel on 19 Aug 2023, 07:16
|
Night shift summary on 18.03.2023
Finished XAS series at 1.5 mJ/mm² for different delays
Performed XAS at 6 mJ/mm²
Tested tr-RIXS signal
at 1mj/mm² with 29 different delays, signal too weak to continue
Took 5 hours of tr-RIXS signal at 1.2 mj/mm² with 29 different delays
Problems: |
Shift summary, posted by Konopkova Zuzana on 19 Aug 2023, 06:20
|
beam parameters: 7.7 keV seeded, 2.2 MHz, up to 20 pulses, 150 uJ/pulse
user program, measuring IXS spectra of plasmons with high resolution using seeded beam and monochromators
mono (re-)alignment
to minimize the SASE pedestal of the seed. Need to search for good position of the beam on the crystals as with just a slight change in pointing, the transmission |
Afternoon Shift Summary on 17.08.2023, posted by Justine Schlappa on 17 Aug 2023, 23:54
|
Achievements:
1. Finalized tr-RIXS series at 1.74 mJ/cm2
2. Checked FEL alignment |
Night shift summary on 16.08.23, posted by Sergii Parchenko, Manuel Harder on 17 Aug 2023, 11:09
|
Achievements
Acquired tr-RIXS data with 4.0 mJ/cm² laser power for 21 delays between -2 and +10 ps at 853 eV. including static XAS and dark hRIXS
runs. Totally collected 210 minutes of data i.e. 10 minutes per delay
Acquired tr-RIXS data with 4.0 mJ/cm² laser power for 21 delays between |
Afternoon shift summary on 16.08.2023, posted by Teguh Citra Asmara on 17 Aug 2023, 11:08
|
Achievements:
tr-RIXS at 4 mJ/cm2 for energies A, B, C, and D (pre-edge)
Checked and optimized FEL alignment, t0 and overlap with PP laser
after reset of machine synchronization
Long delay scans for Peak A and C, up to 100 ps |
Morning Shift Summary on 16.08.2023, posted by Teguh Citra Asmara, Eugenio Paris on 17 Aug 2023, 11:07
|
Achievements:
Performed tr-RIXS on peak A, B, and C at 2.4 mJ/cm^2
Performed tr-XAS on peak A at 3 fluences
Performed tr-RIXS
on peak A at 4 mJ/cm^2
Problems: |
Night Shift Summary on 15.08.2023, posted by Sergii Parchenko, Manuel Harder on 17 Aug 2023, 11:06
|
Achievements:
Replaced focusing lens of PP laser and measured focus with knife edge, focus is about 720 micron vert. & 600 horizontal. Horizontal
x-ray spot size is 220 micron
Adapted fluence calibration for the new spot sizes
Optimized spatial and temporal overlap with new |
Late Shift Summary on 15.08.2023, posted by Justine Schlappa, Le Phuong on 17 Aug 2023, 11:04
|
Achievements:
Set up PP laser, find spatial and temporal overlap between FEL and PP laser
Optimize MCP and HAMP settings for good XAS signal
Find
time zero from XAS on sample and optimize for XAS delay scans at 40 deg incidence angle
Take a fluence series on XAS delay scan from about 0.1 |
Morning Shift Summary on 15.08.2023, posted by Teguh Citra Asmara, Eugenio Paris on 17 Aug 2023, 11:00
|
Achievements
Start cooling down the sample
Align the beamline and deliver the beam into the sample
Performed knife edge scans
and enlarge the beam horizontal size to 350 um
Tuned the VHM bending by checking the hRIXS resolution
Performed energy calibration |
Shift end, posted by Jayanath Koliyadu on 13 Aug 2023, 21:33
|
X-ray delivery
9.3 keV, up to 181 pulses at 564 kHz, 8 - 1.3 mJ
Issue with pulse energy stability along the pulse train in the morning but
optimzed later on in the day
Optical laser delivery |
Shift end, posted by Jayanath Koliyadu on 12 Aug 2023, 22:50
|
X-ray delivery
9.3 keV, up to 181 pulses at 564 kHz, 1.8 - 1.9 mJ
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 181 pulses @ 564 kHz and 91 pulses at 282 kHz, stable delivery
Achievements/Observations |
Issue, posted by Romain Letrun on 12 Aug 2023, 07:19
|
Potentially damaged 1.2 mm CVD in XTD2 attenuator. This feature was not present earlier in the week. |
Shift summary, posted by Romain Letrun on 12 Aug 2023, 07:12
|
Shift summary for 11.8.2023
X-ray delivery |
Shift summary, posted by Jörg Hallmann on 12 Aug 2023, 01:32
|
measured various sample using the levitation device
issues:
during the change of the sample detector distance, the AGIPD chiller "Julabo" switch itself off and went into error - on & off procedure |
Shift summary, posted by Romain Letrun on 11 Aug 2023, 07:16
|
Shift summary for 10.8.2023
X-ray delivery
9.3 keV, up to 181 pulses at 564 kHz, 1.8 - 1.9 mJ
Optical laser delivery |
Shift summary, posted by Jörg Hallmann on 11 Aug 2023, 01:44
|
alignment checks of the CRL2 device as well as the Mono - continuation of both devices together planned for tomorrow
flatfelds for EPIX & AGIPD (needed to be redone because of too low intensity during the previous measurements)
installation of the levitation device and first test measurements |
Issue, posted by Raúl Villanueva-Guerrero on 10 Aug 2023, 22:43
|
Here is a capture of the observed issue with the SPB shutter the past night.
Observe the two opening/closing incidents: the first kept the shutter "OPEN" signal during 4 minutes aprox., and the second did |
Shift summary, posted by Romain Letrun on 10 Aug 2023, 07:22
|
X-ray delivery
9.3 keV, up to 181 pulses at 564 kHz, ~1.8 mJ. Overall stable delivery.
Optical laser delivery
800 nm, 50 fs, 564 kHz, up to 185 pulses. Overall stable delivery.
Achievements/Observations |
Shift summary, posted by Jörg Hallmann on 10 Aug 2023, 01:31
|
- finalized the flatfields of the AGIPD at 0.5 MHz
- optimized the performance of the beam (now 850 - 950 uJ)
- measured flatfield and darks for the Jungfrau detector |
Shift summary, posted by Jörg Hallmann on 09 Aug 2023, 01:42
|
after alignment of the beam, the main topic of the day were flatfields for the AGIPD with various
settings
corresponding darks have been taken in addition
it was challenging to generate proper flatfield intensities
on the detector (1photon peak equally high as the 0photon peak) due to the low intensity (750uJ)
shift crew received a warning of the machine |
Shift end, posted by Jayanath Koliyadu on 08 Aug 2023, 22:57
|
X-ray delivery
9.3 keV, ~ 2 mJ, stable delivery except for the intensity slope along the train (fixed later on)
Optical laser
delivery |
Late shift summary 06.08.2023, posted by Sergii, Andreas on 06 Aug 2023, 23:20
|
Achievements:
-Re-alighned beam transport from the FEL soource as we seen low phon counts on the spectrometer
-Optimized spectrometer at 1000l/mm grating |
Morning Shift Summary, posted by Ben, Justina on 06 Aug 2023, 15:55
|
Achievements
Moved spectrometer to 1000 ln/mm and began alignment
Plan for next shift
Continue optimization of spectrometer with 1000 ln/mm grating
Problems |
Late shift summary 05.08.2023, posted by Sergii, Andreas on 05 Aug 2023, 23:06
|
Achievements:
- Find course timing with antenna
-Find find timing signla with TR_XAS on the sample |
Shift summary, posted by Ben, Justine on 05 Aug 2023, 15:33
|
Achievements
Measured XAS and RIXS from NdNiO3 test sample at 230 K
Plan for next shift
Measure test sample at 20K
Find timing between X-ray and laser and look for transient signal
|
Shift summary, posted by Romain Letrun on 05 Aug 2023, 08:20
|
X-ray delivery
9.3 keV, 1-202 pulses at 1.13 MHz, 1.9-2.1 mJ.
Overall stable delivery.
L-IBFB could not be activated due to missing
missing transfer matrix elements. Missing parameters entered by the expert who happened to be on shift this morning.
Optical |
late shift summary, posted by Andreas, Sergii on 04 Aug 2023, 23:20
|
achievements:
hooked up sample cooling and reached 20K at sample at typical low consumption rate
we archieved targeted resolving power of
~10,000 or 86meV @ 857eV at low temp 20K after indications that heating broadens the elastic line of CoO
we observe sample damage at 30% and |
night shift summary, posted by Giuseppe Mercurio, Teguh Asmara on 04 Aug 2023, 07:10
|
achievements:
changed the LEPM to optimize resolution
found 140 meV
problems:
were not able to recover settings found because it is difficult to reproduce LEPM positions
plan: |
shift summary, posted by Giuseppe Mercurio, Teguh Asmara on 02 Aug 2023, 06:44
|
achievements:
beam transport with the second half of undulators closed
measured pulse energy in SCS hutch and verified that the transmission
of the beamline with hr grating is as previously reported
knife edge scans along vertical direction to find focus (<=11 um) and horizontal |
Night shift summary 30.07.2023, posted by Sergii, Martin on 31 Jul 2023, 01:42
|
Achivements:
-We measured vertical spot size for several VFM settings
Problems: |
Shift summary, posted by Ulrike Boesenberg on 30 Jul 2023, 23:06
|
9 and 10keV beam, up to 30 bunches, significant drop in intensity in the morning and in the evening.
Activities:
Commissioning of EH MIRR device |
Morning Shift summary, posted by Giuseppe, Andreas on 30 Jul 2023, 18:35
|
achievements:
calibration of exit slits
measurement of Cu L3 edge
moved hRIXS to nominal settings for Cu L3 edge
problems:
hRIXS motors could not be moved remotely, the problem was finally understood: GTZ had been moved manually into an interlock condition, |
Shift summary, posted by Ulrike Boesenberg on 30 Jul 2023, 02:02
|
9.3 keV, 1-35pulses, stable delivery ~600uJ
*General alignment of MID branch to the DES
*Commissioning of CRL2 (MID_XTD6_CRL) together with EEE after change to close loop in the maintenance period and alignment of lenses, characterization |
Shift end, posted by Adam Round on 29 Jul 2023, 23:46
|
X-ray delivery
12.4 keV, up tp 352 pulses but the intensity drop across the train was too dramatic to use. reasonably stable delivery with 202 pulses.
Optical
laser delivery |
Issue, posted by Harald Sinn on 29 Jul 2023, 17:57
|
The hutch search of SASE3, SXP became defective around 5am.
DESY MPS group replaced a defective warning light unit and now it seems ok. |
Status, posted by Harald Sinn on 28 Jul 2023, 15:37
|
Good news: The 'jitter'-tests was sucessful and BKR could identify the jitter source related to a wrong software setting around the AH1 module
of injector.
This was now fixed and the jitter has disappeared |
end of shift summary, posted by Giuseppe Mercurio, Laurent Mercadier on 28 Jul 2023, 14:56
|
achievements:
found new M2 bender position for focusing using blank
tried to use unfocused beam for ESLITS calibration, but could not see
it at SCSPopin, only at M5 Popin
we moved the XRD chamber laterally, closer to hRIXS, to be able to cut the beam using the sample at grazing |
Status, posted by Harald Sinn on 28 Jul 2023, 14:46
|
As discussed, there will be a beam interuption form 14:45 until probably 15:45 related to jitter studies at A1 that the BKR would like to try out.
Harald |
Shift Summary 27_07_23 night, posted by Sergii, Manuel on 28 Jul 2023, 06:38
|
Achievements:
1. Beam in sample chamber, almost overlapping with ALAS
2. We saw signal on MCP and diode2 |
Status, posted by Harald Sinn on 25 Jul 2023, 19:18
|
After the 12 hour cryo failure last night, it was decided to exchange a faulty window with some reduced transmission at the injector laser today
(see email by Andreas to xo-info yesterday).
This was sucessful and the injector tunnel was closed today 16:40 and restart of the gun is ongoing. Tomorrow ramp up and SASE tuning. |
Status, posted by Frederik Wolff-Fabris on 23 Jul 2023, 17:28
|
Photon Activities by XPD colleagues in SA3 are concluded on Sunday 23.07 at 17:00. The photon commissioning activities are concluded for this
week.
The PRC agrees with RCs to handle beam back to BKR for further tuning activities while touching common nobs. |
Shift Summary SA2, posted by Silja Schmidtchen on 21 Jul 2023, 20:31
|
Alignment to HED: https://in.xfel.eu/elog/XRO+Beam+Commissioning/205
SA2 - divergence with various M2 bender positions HED - https://in.xfel.eu/elog/XRO+Beam+Commissioning/200
SA2 - divergence with various M2 bender positions MID - https://in.xfel.eu/elog/XRO+Beam+Commissioning/196 |
Summary of SA1 shift for XO and instruments, posted by Kelin Tasca on 21 Jul 2023, 17:22
|
PBLM checked: https://in.xfel.eu/elog/XRO+Beam+Commissioning/203
Solid attenuators checked: https://in.xfel.eu/elog/XRO+Beam+Commissioning/194 |
Beam aligned to HED, posted by Antje Trapp on 21 Jul 2023, 16:54
|
Position stored in XRO setpoints - F and HED setpoints - A |
Shift summary of SASE1 alignment, posted by Kelin Tasca on 20 Jul 2023, 20:21
|
Beam aligned to SPB Pop-In https://in.xfel.eu/elog/XRO+Beam+Commissioning/185
Beam aligned to FXE Pop-In https://in.xfel.eu/elog/XRO+Beam+Commissioning/187
Vibration tests: https://in.xfel.eu/elog/XRO+Beam+Commissioning/188 |
FXE beam alignment 9 keV 2 mrad, posted by Kelin Tasca on 20 Jul 2023, 18:23
|
|
Shift summary of SASE2 alignment, posted by Antje Trapp on 20 Jul 2023, 18:20
|
Mirror pitch motors Ry were tested after scaling was changed to um.
Tx and Ry motor positions were calibrated to their measured physical positions.
ALL PREVIOUSLY SAVED SETTINGS FOR SASE2 MIRRORS ARE OBSOLETE! |
SPB beam alignment 1 keV 2 mrad, posted by Kelin Tasca on 20 Jul 2023, 18:17
|
|
Shift summary: 19. July, posted by Mikako Makita on 19 Jul 2023, 20:09 8x
|
Summary of today's activity:
Beam handover ~ 3pm.
SA2 mirror set tp B4C.
SA2 Rough alignment to MID & HED @ ~ 2-2.5 mrad ==> img 1, 4,
5 & 6
SA2 HED-Preabsorber position check with x-ray (working) ==> img 2 &3
SA3 M6 mirror Switch check (seems to be working)
SA1 |
ALL RY MOTORS ARE IN MICROMETER SCALING, posted by Antje Trapp on 19 Jul 2023, 12:34
|
This has several implications:
- ALL PREVIOUSLY SAVED RY POSITIONS ARE OBSOLETE!
- Ry values seem to have changed by a factor of 1000 |
New screens installed in FEL imager SA3, posted by Andreas Koch on 21 Jun 2023, 15:12
|
YAG screen
The damaged screen "YAG2" with Al coating had marks and had been exchanged.
The Imager Watchdog now protects the screen - operational for some months i.e. the number of bunches is shut down to zero if the intensity at the |
Shift start, posted by Jan Gruenert on 19 Jun 2023, 09:37
|
Rampdown day activities
The main focus is as usual on checking all tunnel components and to identify any potential
issues that could be fixed during the maintenance period which will be starting this wednesday. |
Shift summary, posted by Konopkova Zuzana on 19 Jun 2023, 05:34
|
concluded user experiment on dynamically compressed water
long train operation worked relatively stable with no major interuptions
in beam delivery
|
Shift end, posted by Adam Round on 18 Jun 2023, 07:31
|
posting for 17th June
Staff: AR, AS, FK, HH, JB, KK, DZ, MK
X-ray delivery |
Strange pulse behavior upstream XGM, posted by Faisal Hammad Mekky Koua on 17 Jun 2023, 07:41
|
- Pulse intensity decreases drastically at XTD2 across the train
- the visualisation of our beam therfore needs to be compensated adjusting transmission
- beam shape and uniformity is different than previous days and it is unclear how much of this is related to real changes in the beam or an effect |
Shift summary, posted by Konopkova Zuzana on 17 Jun 2023, 07:27
|
Beam 18 keV, 0.5 MHz, long trains up to ~280 pulses
change setup to dynamic DAC
prep for user beamtime: alignment of X-rays, focusing (~40 um), train-on-demand for long trains,
transmission runs
darks, XRD calibrations for AGIPD
Issues: |
Status, posted by Abhisakh Sarma on 16 Jun 2023, 11:42
|
Beam is back at around 11:30 pm
We lost 1 hr 30 min of beam time.(it was promised to get back at around 10:00 am)
If we want to change the pulse number then we need to call BKR. |
Issue, posted by Michaela Petrich on 16 Jun 2023, 06:28
|
staus of JUN16, 11:30
SA1 and SA3 have been adjusted to acceptable conditions to be compatible with simultaneus operation at SA2
tuning on SA2 is ongoing |
Shift summary, posted by Johan Bielecki on 15 Jun 2023, 23:08
|
X-ray delivery
12.42 keV, stable delivery in single pulse mode with 1.9 mJ/pulse
Optical laser delivery
532 nm ns-laser for sample pumping
Achievements/Observations |
Shift summary, posted by Konopkova Zuzana on 15 Jun 2023, 06:41
|
18 keV, 150 uJ per pulse, 2.2 MHz
continuing user program proposal 3285
X-ray heating and laser heating samples in DACs
using only the first 200
pulses of the train as the intensity after decreases fast, conversion of the samples is difficult due to low pulse energies
|
Shift summary, posted by Konopkova Zuzana on 13 Jun 2023, 23:08
|
beam: 18 keV, 352 pulses, ~200 uJ per pulse
achievements:
AGIPD timing scans, AGIPD darks.
beam alignment, CRL3 focusing, prep for the user beamtime
beam conditions: |
Vacuum Leak in SA2-XTD1 Solid Attenuator - [SOLVED] - Closing report , posted by Raúl Villanueva-Guerrero on 13 Jun 2023, 11:23
|
Dear all,
the closing report on this issue can be found in the following Alfresco link:
https://docs.xfel.eu/share/s/GzxORQOGToe_tiug7LIHhQ |
Taking the beam , posted by Abhisakh Sarma on 13 Jun 2023, 06:49
|
BKR changed the beam energy from 15 keV to 12.4 keV
Energy 12.4 keV
Repeatation rate 1.1 MHz |
Shift summary, posted by Chan Kim on 12 Jun 2023, 07:16
|
X-ray delivery
12.42 keV, stable delivery with slightly less than 1.0 mJ/pulse (~0.95 mJ/pulse)
Optical laser delivery
none
Achievements/Observations |
Shift summary, posted by Ulrike Boesenberg on 12 Jun 2023, 02:01
|
*Some more tuning of HXRSS and focus optimization in the morning.
*XPCS data taken in WAXS geometry on different glass samples. |
late shift summary, posted by Laurent Mercadier on 12 Jun 2023, 01:06
|
Achievements
Optimized THz EOS, managed to observe single shot EOS trace with good SNR
Characterized chirp with different glass lengths
Ran
SiN spectral encoding in parallel
Issues |
Early shift summary, posted by Robert Carley on 11 Jun 2023, 17:34
|
Achievements
Observed first EOS of THz emitted from FEL-pumped STE on SiC and Si membranes
Explored fluence dependence and damage limits
Explored
sample heating with pulse repetition rate
Measure timing jitter of FEL with and without longitudinal feedbacks engaged
Problems |
Night shift summary , posted by Robert Carley on 11 Jun 2023, 07:40
|
achievements
optimized EOS signal from FEL-induced THz emission from STE on Sa of PAM
reduced chirp to increase timing sensitivity to 9fs
/ pixel of PAM
STE-based PAM measurements at fixed delay and delay scans.
after FEL down at 6am, continue with PAM measurements |
Shift summary, posted by Chan Kim on 11 Jun 2023, 07:28
|
X-ray delivery
12.42 keV, 0.65 mJ/pulse, low pulse energy but mostly stable delivery
Optical laser delivery
none
Achievements/Observations |
Shift summary, posted by Ulrike Boesenberg on 11 Jun 2023, 02:08
|
* First half of the day was used to optimize seeding performance
* Cryo issues started at 6 pm; were resolved by 9:30pm
* After some tuning, we observed very nice seeding performance around midnight (ratio better than 1:1) |
late shift summary, posted by Loic Le Guyader on 10 Jun 2023, 23:24
|
achievements
checked coarse timing between FEL and PPL at XOX. It had shifted significantly
determined that light coming out of sapphire
from FEL was not heating but fluorescence
observed for the first time THz emission from STE from FEL pump on sapphire substrate and mesured |
Status, posted by Jan Gruenert on 10 Jun 2023, 21:52
|
The Cryo team solved the problems, beam is back.
Downtime from 17h59 until 21h03. |
Issue, posted by Jan Gruenert on 10 Jun 2023, 18:46
|
18h05 : RC informs:
Machine is down, because Cryo-OK was lost.
Apparently it is a turbine but not the cold compressors. |
Shift summary, posted by Chan Kim on 10 Jun 2023, 06:55
|
X-ray delivery
12.42 keV, 0.8 mJ/pulse, stable delivery
Optical laser delivery
none
Achievements/Observations |
Shift summary, posted by Ulrike Boesenberg on 10 Jun 2023, 00:39
|
* Data collection of vycor and glass samples in SAXS geometry until 9am
* Successful intervention on SA2_XTD1_ATT arm 6 by the vacuum group, see elog entry 237 by Raoul and Bianca . Thanks!
* Simultaneous CoC in the MID hutch to WAXS geometry. |
late shift summary, posted by Loic Le Guyader on 09 Jun 2023, 22:52
|
achievements
try pumping STE membrane with FEL and detect THz emission with single shot EOS. No success.
tried cross-polarization for a
short time, no success either.
reduced the PPL chirp to record single shot transient reflectivity data versus BAM for the night.
issues |
Vacuum Leak in SA2-XTD1 Solid Attenuator - [SOLVED] - Preliminary report, posted by Raúl Villanueva-Guerrero on 09 Jun 2023, 15:41
|
Dear all,
After the incidences reported yesterday and the diagnostic remotely done (where we could narrow down the root cause to the edge-welded below
at the Linear stage of the arm Nr. 6 - 2.4 mm CVD diamond], we confirmed this as a fact during the schedule access today. Here is a succint summary of |
Issue, posted by Jan Gruenert on 09 Jun 2023, 12:37
|
Repair of SA2_XTD1_ATT
Status 12h30:
The current MID users took beam until 9am, only then the machine could start preparing for the tunnel access e.g. by decoupling the South branch, |
Shift summary, posted by Adam Round on 09 Jun 2023, 07:05
|
Staff: DZ, AR, MK
X-ray delivery
12.42 keV 169 pulses for alignment 16 pulses for data collection. stable delivery excluding the extended interuption
Optical |
Shift summary, posted by Ulrike Boesenberg on 09 Jun 2023, 02:22
|
*Vacuum issues: There seems to be a leak in the arm nr. 6 (2.4mm CVD Diamond). This has escalated to trip several times the vacuum sector interlock.
VAC will do an intervention to XTD1 with broken interlock tomorrow morning starting 9am to remove arm 6 permanently and putting a blind flange instead.
*We can measure for today with the 2.4mm CVD Diamond inserted into the beam. |
Issue, posted by Jan Gruenert on 08 Jun 2023, 17:05
|
SA2_XTD1_ATT solid attenuator vacuum issue
Info from VAC (Raul Villanueva) 12h30:
It seems to be a leak in the arm nr. 6 (2.4mm CVD Diamond). This has escalated to trip several times the vacuum sector interlock.
On top of that, we also discover an issue with the configuration of a ion pump controller that have required the intervention of DOC / EEE. |
Issue, posted by Johannes Moeller on 08 Jun 2023, 11:02
|
Addition to previous issue:
Last incident (of overall 4), we had 0 bunches, moved in XTD1 ATT 0.6 and 1.2 mm CVD diamond in and 2.4mm CVD out. However, vacuum started to
become bad already two days ago. |
Issue, posted by Jan Gruenert on 08 Jun 2023, 10:37
|
SASE2 vacuum incident
7h10 : MID informs PRC about a vacuum incident in the SASE2 tunnel which tripped the beam. Instructed to contact
directly VAC-OCD
8h26 : VAC-OCD informs that investigation is ongoing, but beam can be delivered. This kind of trip usually occured rarely |
Late shift summary, posted by Loic Le Guyader on 07 Jun 2023, 23:54
|
achievements
setup spectral encoding of the transient reflectivity in FFT
determine coarse timing in the XOX
fixed BOZ_Z motion
and DSSC silicon oil pressure reading
problems |
Morning shift summary, posted by Giuseppe Mercurio, Teguh Asmara on 07 Jun 2023, 15:04
|
achievements:
FEL beam realignment because pointing was off since we had 0 pulses during the night
coarse timing was found
knife
edge scans of FEL to achieve twice the PPL beam size
problems: |
late shift summary, posted by Loic Le Guyader on 06 Jun 2023, 23:11
|
achievements
aligned the beam through up to the XOX imager
prepared FFT for reflectivity measurement
tested new DSSC gain files
for Tb M5 edge
problems |
Status, posted by Naresh Kujala on 06 Jun 2023, 08:28
|
SA2 photon beamline
- SRA position were 7 mm x 7 mm, MID reported they see the hallow of beam shadow at MID Popin
- I have closed the SRA to 3.5 mm x 3.5 mm |
Status, posted by Naresh Kujala on 05 Jun 2023, 08:28
|
- SA2 photon beamline
Today morning found the CRL1: 5 and 6 arm and Pop-in 45-I are still IN. I have retracted them. |
Issue, posted by Tommaso Mazza on 05 Jun 2023, 06:45
|
around 6:15, the lights as the one shown in the attachment turned on by themselves in the control hutch. after some minutes, they switched off.
from the exp hutch camera, we realized that this happened in there as well, which impacted negatively on the running measurement. The pnCCD is
sensitive to ambient light and we have to keep the hutch dark while measuring. |
Shift summary, posted by Romain Letrun on 04 Jun 2023, 21:17
|
X-ray delivery
12.2-12.45 keV, up to 339 pulses at 1.13 MHz, 0.8-1.2 mJ.
Couple of minutes beam interruption.
Optical
laser delivery |
Shift summary, posted by Konopkova Zuzana on 04 Jun 2023, 14:53
|
beam parameters: 20 keV, 300 uJ, 352 pulses
continuation of user programe.
Machine performance very good for trying the 20 keV the first time. Experiment also going well.
|
Shift summary, posted by Romain Letrun on 03 Jun 2023, 23:40
|
X-ray delivery
10.65 keV, up to 339 pulses at 1.13 MHz, 1.6-1.8 mJ.
12.4 keV, up to 30 pulses at 1.13 MHz, 1.0-1.2 mJ.
Beam not
aligned to the crosshair at 12.4 keV, but we could work with it as it is to avoid further tuning.
Overall stable delivery.
Optical |
Pulse energy has dropped to ~50% from this morning, posted by Thomas Preston on 03 Jun 2023, 13:42
|
03 Jun 2023, 13:46
We called the BKR to ask what they can do about our pulse energy being 50% (~160uJ and slowly dropping) of what it was since we made our hutch
intervention (with 0 bunches). BKR were asked to organise a time slot with PRC and the other instruments to make an intervention to try to increase our |
Shift summary, posted by Thomas Preston on 03 Jun 2023, 09:42
|
X-ray parameters: 20 keV, 352 pulses, ca 300 uJ
running user samples.
experiment going overall well.
X-ray performance: |
Shift summary, posted by Romain Letrun on 02 Jun 2023, 23:34
|
X-ray delivery
10.65 keV, 128 pulses at 1.13 MHz, 1.6-1.7 mJ.
Overall stable delivery.
Optical laser delivery
800 nm, 50 fs, 226 pulses at 1.13 MHz.
Achievements/Observations |
pointing stability, posted by Tommaso Mazza on 02 Jun 2023, 06:17
|
we lost spatial overlap on several instances.
It seems that this happens when SASE2 changes number of pulses.
when we have SASE2 changing number of pulses, spatial overlap is lost and this goes with a change in the position read by the xgm in the order |
Shift summary, posted by Romain Letrun on 01 Jun 2023, 23:27
|
X-ray delivery
10.65 keV, 128 pulses at 1.13 MHz and 16 pusles at 141 kHz.
Overall stable delivery.
Optical laser
delivery |
Shift summary, posted by Konopkova Zuzana on 01 Jun 2023, 12:10
|
X-ray parameters: 20 keV (20080 eV from HIREX), 352 pulses, cca 250 uJ
changed setup to diamond anvil cell experiments with laser heating
installation of AGIPD detector
running user
samples, mostly carbon materials to constrain the phase diagram of carbon at high pressures and temperatures.
experiment going overall |
Shift summary, posted by Romain Letrun on 31 May 2023, 23:15
|
X-ray delivery
10.65 keV, 128 pulses at 1.13 MHz and 16 pusles at 141 kHz.
Slope reduced at the start of the shift. Approximately 20% slope
after that with the patterns used for data collection today.
Optical laser delivery |
Issue, posted by Naresh Kujala on 31 May 2023, 17:35
|
HED reported that they are unable to go 352 pulses and while changing/dailing the no. of pulses in the bunch Pattern it is showing the EPS is
limited to 300 pulses. It seems on the SA2_MAIN scene the link for bunch Pattern apparently using the macros scene, which is preventing it from going |
Shift summary, posted by Romain Letrun on 30 May 2023, 23:02
|
X-ray delivery
10.7 keV, up to 339 pulses at 1.1 MHz.
Large slope through the train, up to 70% with 339 bunches. BKR was not able to find
the cause so far, we agreed to pursue this further tomorrow.
Achievements/Observations |
Shift summary, posted by Fernando Ardana on 28 May 2023, 23:15
|
User proposal 3273:
X-ray delivary
We use several deliveraly modes:
Continous single pulse
Continous 30 pulses
POD:
1 pulses / 30 pulses
All works fine, FXE is sastificed with X-ray delivery
DA:
Few |
Shift summary all week, posted by Martin Teichmann on 28 May 2023, 22:57
|
we were trying to make THz and cross correlate this to the pump laser.
We managed to see THz and an auto-correlation with the pump laser therein. Unfortunately we did not see any THz generation using the FEL.
Problems: |
Shift summary, posted by Tokushi Sato on 25 May 2023, 06:35
|
X-ray delivery
10.7 keV, 1.2 mJ, 1-200 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Jörg Hallmann on 25 May 2023, 01:59
|
optimization of seeding ongoing
tasks achieved during alignment:
- polarizer aligned |
Shift summary, posted by Tokushi Sato on 21 May 2023, 18:38
|
X-ray delivery
9.3 keV, 800 uJ, 1-200 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 19 May 2023, 18:39
|
X-ray delivery
9.3 keV, 800 uJ, 1-200 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 18 May 2023, 18:41
|
X-ray delivery
9.3 keV, ~1 mJ, 1-30 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |
Issue, posted by Tommaso Mazza on 14 May 2023, 05:33
|
SA3 GATT has trouble in setting the pressure at ~0.5mbar. setting any value between 0.5 and 0.6 will have it settle around 0.48.
It turns out the GATT cannot tune the pressure between 0.48 and 0.62mbar. tuning pressure continuously to keep transmission constant gets us
in the need of that range eventually. the problem is that at 0.48mbar the valve V30740S is at 100%. the minimum opening of the next valve V307030S gets |
14.8 keV SPB 2mrad Alignment, posted by Maurizio Vannoni on 13 May 2023, 22:18 6x
|
Mirror positions and beam position on the imagers for 14.8 keV SPB, 2mrad
ATTENTION: the alignment was difficult due to the strong background from SA3 with 500 pulses. For the future, maybe SA3 could reduce to single
pulse during alignment of SA1. This would make the process easier. |
Shift summary, posted by Romain Letrun on 12 May 2023, 23:21
|
X-ray delivery
9.3 keV, 1.8 mJ, 202 pulses most of the day.
Attempted tuning to 14.8 keV during the first hour fo the shift did not work
out. More time will be spent tomorrow morning tuning to that photon energy.
Overall stable delivery. Only a magnet failure at 20:25 resulted |
SA3 status, posted by Frederik Wolff-Fabris on 12 May 2023, 16:12
|
The SA3 EPS power limit at the Big brother was disabled to allow photon energy scans in SQS (due to Kr resonance at XGM, invalid power values are generated
and then beam is blocked);
Action was performed by Lars F. (RC), Michaela Petrich (PRC) and F. Wolff-Fabris (XO) with Accelerator RPO. |
Shift summary, posted by Romain Letrun on 11 May 2023, 23:48
|
X-ray delivery
9.3 keV, 1.4-1.8 mJ and 12 keV, 1.1 mJ. 202 pulses most of the day.
Reduced slope after afternoon tuning, down to 20%.
Change
to 12 keV with file prepared earlier this week did not work (no lasing). Tuning to 12 keV took 40 minutes.
30 minutes downtime in the morning.
Optical |
Attention, posted by Michaela Petrich on 11 May 2023, 09:21
|
Dear all,
I just got the information for BKR that due to a failed klystron we had a downtime around 8:40am this morning for about 30 mins.
Operation could be restarted successfully afterwards but with a different energy distribution than before. SASE2 has now reduced pulse energy |
Shift summary, posted by Konopkova Zuzana on 11 May 2023, 05:07
|
beam parameters: 18 keV, 1 pulse on demand, 400 uJ
achieved:
VISAR calibrations
timing between X-rays, VISAR laser and DIPOLE laser
main shots with DIPOLE energies up to 35 |
Shift summary, posted by Romain Letrun on 10 May 2023, 23:23
|
X-ray delivery
9.3 keV, 1.6 mJ, 202 pulses msot of the day.
Slope across the train reduced comapred to yesterday, now about 25%.
Changes
in number of pulses in SASE3 not always automatically picked-up by kickers adaptation and requiring a nudge from BKR to restore performances.
Beam |
Shift summary, posted by karen appel on 10 May 2023, 09:51
|
for 9th of May - 10th of May: user experiment 2740 , first users with DIPOLE100-X long pulse laser
Took beam at 18 keV with roughly 450 muJ
M1 and M2 Mirrors on Pt stripe, M3 on B4C and with Tx = 4 |
Shift summary, posted by Romain Letrun on 09 May 2023, 23:09
|
X-ray delivery
9.3 keV, 1.8 mJ, 202 pulses most fo the day. Pronounced (~30-40%) slope across the train.
Pointing initially far off the reference
crosshair. One hour required at the start of the shift to go to 9.3 keV and align the beam to the crosshair.
Optical laser delivery |
Attention, posted by Jan Gruenert on 08 May 2023, 09:04
|
Info from XRO (Maurizio Vannoni) to PRC concerning tunnel access request #152936 (Inspection and repair of SQS ESLIT)
- The ZZ-access will be done by Marc Planas, Massimiliano Di Felice, and Idoia Freijo.
- They will start their access between 9h00 and 9h30 and end their access by 12h30. |
Shift summary, posted by Jan-Etienne Pudell on 08 May 2023, 02:38
|
Stable beam delivery with 23keV and 140µJ at 2.2, 1.1 and 0.55MHz
User data acquisition during the day interrupted by storage and detector DAQ problems: |
Late shift summary 07.05.2023, posted by Sergii, Phuong on 07 May 2023, 23:11
|
Achivments:
-Move DSSC closer to the sample.
-Measure delay scans for opposite magnetic field. |
morning shift summary, posted by Giuseppe Mercurio on 07 May 2023, 14:47
|
achievements
exchanged He dewar and managed to cool down the sample again after vacuum issue last night
started collecting additional scattering
data with alternating magnetic field on large nanoparticles sample
problems |
shift summary, posted by Giuseppe Mercurio on 07 May 2023, 06:52
|
achievements:
measured delay scans on 16 nm samples at different magnetic fields (4 runs) before the problem below appeared
problems:
scroll pump of the FFT degraded, rough vacuum got worse, this led to pump in error state and interlock valves. The scroll pump was replaced, |
Shift summary, posted by Jan-Etienne Pudell on 07 May 2023, 02:23
|
We had stable x-ray delivery with 120µJ and up to 300 pulses.
Successful user data acquisition of water and water+THF samples at various supercooled states |
Late shift summary 06.05.2023, posted by Sergii, Phuong on 06 May 2023, 23:15
|
Achivments:
-Measure delay scans at two PPL fluencies on smaller grain size.
-Moved DSSC back to 1.45 m sample - detector distance |
morning shift summary, posted by Giuseppe Mercurio on 06 May 2023, 14:42
|
achievements
finished recording dataset at 20degree
changed for sample with smaller grains at normal incidence and moved DSSC to 1.2m
OL
induced some change of the sample but the scattering ring remains and then stabilize
started collecting data
problems |
Shift summary, posted by Tokushi Sato on 06 May 2023, 06:55
|
X-ray delivery
12.4 keV 200 pulses / train, relatively stable intensity ~1.2 mJ / pulse
Optical laser delivery
420 nm PP laser
ns laser for jet imaging
Achievements/Observations |
night shift summary, posted by Giuseppe Mercurio on 06 May 2023, 06:53
|
achievements:
- measured delay scans at sample tilted by 20 degree
problems: |
night shift summary, posted by Giuseppe Mercurio on 06 May 2023, 06:53
|
achievements:
- measured delay scans at sample tilted by 20 degree
problems: |
Shift summary, posted by Jan-Etienne Pudell on 06 May 2023, 02:19
|
- We get stable x-ray delivery with 130µJ.
- We could move the detector succesfully in and out of the LFoV configuration! |
Late shift summary 05.05.2023, posted by Sergii, Phuong on 05 May 2023, 23:00
|
Achivments:
-Measure time scans with magnetic field in opposite directions
Problems |
SA2 status, posted by Jan Gruenert on 05 May 2023, 16:51
|
MID reports an observation that is particular to the operation at the currently high photon energy of 23 keV
MID inserted the XTD6-MID-preabsorber and assumed that it completely stops the beam.
They acquired AGIPD detector images as dark frames but were surprised to still find some weak background signal (not dark). |
morning shift summary, posted by Giuseppe Mercurio on 05 May 2023, 14:56
|
achievements
with help from LAS OCD, we got the PPL synchronized again with optical lock and close to the initial t0 on the sample
we found
t0 on the sample again
collected data with magnetic field
initial setup of damnit/amore for semi-automatized data processing
problems |
Shift summary, posted by Giuseppe Mercurio, Diego, Martin, Amina on 05 May 2023, 06:33
|
achievements:
inserted the magnet and measured delay scan at the maximum magnetic field with opposite directions
data analysis showed that
runs measured during the afternoon/evening led to sample degradation (the sample shows a dark spot, change in the scattering signal is also cearly visible)
corrected |
Re: Shift summary, posted by Giuseppe Mercurio on 05 May 2023, 07:23
|
Actually, it looks like the sync was lost shortly before 23h last night as the jitter went to 0fs and recovered at 1am when a new sync search probably
started.
Giuseppe |
Shift summary, posted by Tokushi Sato on 05 May 2023, 06:44
|
X-ray delivery
12.4 keV 200 pulses / train, relatively stable intensity ~0.8 mJ / pulse
Optical laser delivery
420 nm PP laser
ns laser for jet imaging
Achievements/Observations |
Shift summary, posted by Jan-Etienne Pudell on 05 May 2023, 02:16
|
X-ray delivery:
- stable at 120µJ, mostly 63 pulses
- 1:30h downtime |
Issue, posted by Tokushi Sato on 05 May 2023, 00:50
|
Laser synchronization is gone, unlocked from 04.05.2023, 22.47. E-mail was sent to lbsync-expert@desy.de and c.c. to las-op@xfel.eu. |
Late shift summary 04.05.2023, posted by Sergii, Phuong on 04 May 2023, 22:58
|
Achivements:
-Cooling down the sample. Sample is at 14K
-Taking time resolved data at 70% 800 nm, -5 ps - 65 ps |
morning shift summary, posted by Loic Le Guyader on 04 May 2023, 14:34
|
achievements
we change the DSSC timing to record the first pulse
sample was getting damaged with 26mJ/cm2 and scattering of the sample
was changed so we used lower fluence to observe t0 on the sample
changed to 2nd mono order, 20% GATT transmission and exit slit to 0.3 mm. The |
Shift summary, posted by Tokushi Sato on 04 May 2023, 06:41
|
X-ray delivery
12.4 keV 200 pulses / train, relatively stable intensity ~0.8 mJ / pulse
took some time in changing X-ray energy (from 19.16
keV to 12.4 keV)
Optical laser delivery |
Shift summary, posted by Jan-Etienne Pudell on 04 May 2023, 01:22
|
Shift summary:
- get the beam with 23keV and 120µJ
- falignment of mirrors m1 and m2 on the pt stripe at 23keV |
Late shift sumamry 03.05.2023, posted by Sergii Parchenko on 04 May 2023, 00:52
|
Achivments:
- X-ray and Laset spot size calibration
- Course timing check |
SA1 status, posted by Jan Gruenert on 04 May 2023, 00:07
|
SASE1 status:
First shift switchover this week at 23h from FXE (19.5 keV) to SPB/SFX (12.4 keV) with issues.
No immediate lasing at 12.4 keV with standard procedures / files, then tuneup using FEL imager (CBor) in multibunch. Wrong pointing (far off |
Status, posted by Jan Gruenert on 03 May 2023, 13:01
|
The machine tuning over the night had not yet accomplished fully satisfactory beam conditions mainly at the high photon energies for SA1 and SA2,
therefore tuning continued during WED morning.
Beam was handed over to SCS (SASE3) at 9h with about 2.4mJ at 2.5 keV. |
Shift summary, posted by Raphael de Wijn on 30 Apr 2023, 21:59
|
SPB/SFX In-house research 4978 shift 3 - end
X-ray delivery
9.3 keV 352 pulses / train, relatively stable intensity ~1.9 mJ / pulse
beam down ~30 min
Optical |
Stability Issue, posted by Tommaso Mazza on 30 Apr 2023, 09:01
|
changing SA3 mono from grating to blank while having the und to mono synchronization running apparently caused the und photon energy to change to 680eV.
the synchronization MDL went into pink-disable when changing mirror settings, so this change in photon energy should not have occurred.
After going back to 940eV, the SASE level did not come back. BKR tried to tackle this for some while until they asked for intervention of the |
Shift summary, posted by Richard Bean on 29 Apr 2023, 22:00
|
SPB/SFX In-house research 4978 shift 2
X-ray delivery
9.3 keV 202 pulses / train, relatively stable intensity 2.0 mJ / pulse at start of train, ~30% decrease in intensity across train
BKR |
Shift summary, posted by Richard Bean on 28 Apr 2023, 21:55
|
SPB/SFX In-house research 4978
X-ray delivery
9.3 keV 202 pulses / train, relatively stable intensity 1.9 mJ / pulse, some decrease in intensity across train
Optical |
Attention, posted by Naresh Kujala on 28 Apr 2023, 16:08
|
FXE (Fred) confirmed that they don't use beam for night shifts from Friday to Sunday.
|
Issue, posted by Naresh Kujala on 28 Apr 2023, 13:00
|
- Received a call from machine RC (Sergey Tomin)
- There is an issue with DOOCS to Karabo bridge, Tim and DESY experts are looking into this and came to the conclusion that it can't be resolved
now and need more time something like 1 week. (probably next week). Due to this PySpectrometer for SA3 is not available, as SQS would like to set up a |
Issue, posted by Naresh Kujala on 28 Apr 2023, 11:21
|
Issue with SA1_XTD9_PBLM and it is stuck.
Hi All,
After discussion with SPB, they will slightly move the PBLM screen where they don't see any distortion in the beam and are willing to continue |
Shift summary, posted by Richard Bean on 27 Apr 2023, 23:33
|
SPB/SFX PCS user proposals (day 1)
X-ray delivery
9.3 keV, 1600 uJ/ pulse
Achievements/Observations |
HED Full Day Summary 26.04., posted by Alejandro Laso Garcia on 27 Apr 2023, 07:51
|
Morning shift:
- Tried to align the fiducial fiber in IC1 for the streak cameras, however it was unsuccessful.
- The karabo device for the SOP had to be restarted. Crosschecked that all the timings were still correct. |
Shift summary, posted by Chan Kim on 27 Apr 2023, 00:07
|
SPB/SFX User Proposal 3333 Shift 2 Summary
X-ray delivery
9.3 keV, 1.7 mJ, 202 pulses @ 564 kHz |
HED Full day shift summary 25.04., posted by Alejandro Laso Garcia on 26 Apr 2023, 07:55
|
Morning shift:
- First thing in the morning ~7 am, the MDL in the SASE 2 topic were down. Even the watchdog which prevented us from moving SA2 attenuators.
DOC quickly resolved the issue (10 min). |
Shift summary, posted by Richard Bean on 26 Apr 2023, 01:03
|
SPB/SFX User shift 1 3333
X-ray delivery
9.3 keV, 1.7 mJ, 202 pulses @ 564 kHz |
night shift summary and end of beamtime, posted by Andreas, Martin on 24 Apr 2023, 15:16
|
achievements:
- finished SAXS data recording till 8am on time-resolved skyrmion nucleation and field dependence
- the setup is sensitive to beam transport drifts due to the closed hor-SLIT and the pinhole in FFT. were able to recover beam intensity by simple |
night shift summary and end of beamtime, posted by Andreas, Martin on 24 Apr 2023, 15:16
|
achievements:
- finished SAXS data recording till 8am on time-resolved skyrmion nucleation and field dependence
- the setup is sensitive to beam transport drifts due to the closed hor-SLIT and the pinhole in FFT. were able to recover beam intensity by simple |
shift summary, posted by Ulrike Boesenberg on 24 Apr 2023, 02:45
|
Beam came back quickly after cryo-incident with ok seeding performance (not very stable).
Finish 3381-Pudell beamtime with
SRO/STO samples at time delays and laser fluences.
Decided not to scan the HXRSS energy but stay at current position
Mount samples |
last late shift UP3463, posted by Giuseppe Mercurio, Laurent Mercadier on 23 Apr 2023, 23:38
|
Achievements
Beam transport
Coarse and fine timing
XAS on Co
Aligned HSLIT, pinhole, camera beamstop
Characterize
FEL beam size and position on curved grating
PPL Power measurement
Fluence scan on sample of optical laser and FEL to determine good |
late shift summary, posted by Laurent Mercadier, Giuseppe Mercurio on 22 Apr 2023, 23:32
|
Achievements
Work on laser to improve the beam profile and reduce pointing. Apertured the beam upstream of focusing lens and changed to f=750 mm.
Significant improvement.
Characterized beam size, found positions of photodiode, antenna
Check coarse timing with reference
Aligned |
Shift summary, posted by Ulrike Boesenberg on 22 Apr 2023, 21:57
|
Quick aligment of the instrument with quiet good HXRSS performance after cryofailure
Checking of t0 to the optical PP laser
Test of energy scanning macro (Undulator + HXRSS) |
Shift summary, posted by Romain Letrun on 21 Apr 2023, 04:33
|
X-ray delivery
12.0 keV, 1.3 mJ, 1-168 pulses @ 564 kHz
Cryo issue at 3:33
Optical laser delivery
1030 nm compressed, THG.
Stable delivery.
Achievements/Observations |
Night shift summary 20-21.04.2023, posted by Robert Carley on 21 Apr 2023, 04:13
|
Activities:
Investigated SAXS scattering instability and found it to come from the pointing variation of the PPL
Recorded microscope images
of the PPL spot of the pBN to quantify the pointing for different spot sizes
Enlarged the beam and measured pumped SAXS. Results seem better |
Late shift summary20.04.2023, posted by Robert Carley on 21 Apr 2023, 04:05
|
Activities:
correctly positioned magnet
moved detector upstream and found small beamstop
Recorded SAXS
Started tr-SAXS
Problems:
The SAXS images from laser-excited samples showed unexpected variation between different size rings, central point (ie not a ring) and |
Shift summary, posted by Wonhyuk Jo on 21 Apr 2023, 02:10
|
Shift Summary
Collected optical laser-induced dynamics in HfN and STO/SRO samples.
Jungfrau detector transferred data without data dropping issue.
|
Shift summary, posted by Romain Letrun on 20 Apr 2023, 06:58
|
X-ray delivery
12.0 keV, 1.3 mJ, 1-168 pulses @ 564 kHz.
Stable delivery.
Optical laser delivery
1030 nm compressed, THG.
Stable delivery.
Achievements/Observations |
Shift summary, posted by Wonhyuk Jo on 20 Apr 2023, 02:26
|
Achieved
Brought the 800 nm of optical pump laser to the hutch after the intervention.
Found the rough spatial and temporal overlap
between the X-ray and pump laser with MID X-ray eye.
Found the sufficient photo-induced effect on the user sample (HfN) with one unpumped |
shift summary day 2 UP3463, posted by Laurent Mercadier, Martin Teichmann on 19 Apr 2023, 23:20
|
Achievements
found larger beamstop
found center of pinhole and bender settings for beam size
checked jitter of beam on grating,
looks like jittering is large, to be further investigated offline
checked that patterns are working for the night, to be continued by night |
Issue, posted by Laurent Mercadier on 19 Apr 2023, 17:51
|
We report on an issue regarding the bunch pattern: The bunch pattern read by SCS_RR_UTC/MDL/BUNCH_DECODER shows 48 pulses, but we instead use 50 pulses.
Currently, we have a separate RF window and our 1st pulse Id is 2604. We operate at 2.2 MHz, and as required, 50 pulses. See attachment 1.
This means that the last two pulse Ids are 2700 and 2702. However, these values exceed the number of pulses allowed, and the way the bunch pattern |
Shift summary, posted by Romain Letrun on 19 Apr 2023, 07:04
|
X-ray delivery
12.0 keV, 1.3 mJ, 1-168 pulses @ 564 kHz
Decaying intensity between 1:20 and 2:40, otherwise stable delivery.
Optical
laser delivery |
Shift summary , posted by Wonhyuk Jo on 19 Apr 2023, 02:14
|
Achieved
Brought the X-ray to the end of the beamline.
Aligned the goneometer with a pin.
Found the timing of
AGIPD at the detector distance of about 3.4 m from the sample.
Found the timing of Jungfrau detector in burst mode.
Measured the |
summary late shift day 1, posted by Laurent Mercadier, Martin Teichmann on 18 Apr 2023, 23:01
|
Achievements
knife edge scans of FEL beam, 30 um x 30 um beam size
aligned beam stop in front of camera
triggering pattern tested
and works, still need to test with laser and XGM
Problems |
shift summary EulerMDL calibration, posted by Antje Trapp on 16 Apr 2023, 23:06 11x
|
First four pictures: beam line status at beginning of shift - Beam aligned to MID
Idea is to check M2 parasitic motions again on M3 popin. therefore bringing M2 close to 0 with all vertical motors and Tx as much as possible
without using beam on the popin. |
Shift summary, posted by Silja Schmidtchen on 16 Apr 2023, 15:35
|
shift summary from Saturday 15.04.2023:
Tasks:
- Calibration of Euler MDL |
Shift summary, posted by Maurizio Vannoni on 16 Apr 2023, 07:00
|
Update of the damage tests at SQS.
Yesterday (15.04) SQS staff created a focused beam on our sample using a small YAG fragment we have placed on the holder.
Due to the unusual position, the beam is full of aberrations but it looked small enough for our purpose. Estimattion of the size is difficult |
Shift end, posted by Jan Gruenert on 13 Apr 2023, 15:57
|
End of Diamond Sensor Study
We leave the SASE2 beamline in the following safe state:
Pre-Abs inserted
Solid ATT with T=0.001
All CRLs OUT
All imagers OUT
|
Issue, posted by Andreas Koch on 13 Apr 2023, 15:29
|
Trigger issue with SXP_XTD10_IMGES - Exit Slit imager
The external trigger of the Navitar camera was not set, fixed now.
The single pulse trigger of the imager: MCP + camera is tested and correctly working. |
Issue, posted by Jan Gruenert on 10 Apr 2023, 02:25
|
REPAIRED / FIXED
Problem: The imager SPB_XTD9_IMGPII45 insertion motor lost steps and kept the machine to maximum 2 bunches per train.
Mitigation by DOC/EEE/PRC on 8 April 2023: made sure that screen seems actually out of beam and took imager out of interlock |
SPB_XTD9_IMGPII45 lost steps - REPAIRED, posted by Jan Gruenert on 10 Apr 2023, 02:16
|
REPAIRED / FIXED
Problem: The imager SPB_XTD9_IMGPII45 insertion motor lost steps and kept the machine to maximum 2 bunches per train.
Mitigation by DOC/EEE/PRC on 8 April 2023: made sure that screen seems actually out of beam and took imager out of interlock |
Shift summary HED 2022-0, posted by Motoaki Nakatsutsumi on 09 Apr 2023, 00:03
|
9.752 keV, self-seeding, 700-800 uJ. Intensity is very stable, ponting is also much stable than usual. very good beam.
Beamtime #3326 - Axion search.
Successfully aligned two Ge crystals to Laue conditions (Rocking curve width ~0.002 deg) . Found Laue reflections after 2 crystals on Jungfrau |
Issue, posted by Yifeng Jiang on 08 Apr 2023, 23:44
|
We notice that 0.5 mm Silicon ATT in SASE1 causes holo beam profile in FEL imager. Maybe this silicon att has been damaged. |
Shift summary, posted by Johan Bielecki on 08 Apr 2023, 22:52
|
Beam delivery for proposal 3378
Achievements/Observations
Collected large amounts of data for the user program on water crystallisation and angular correlations
To do for next |
Issue, posted by Andreas Galler on 08 Apr 2023, 10:29
|
Changed EPS Interlock condition for SPB_XTD9_IMGPI/SWITCH/SCREEN_OUT
SPB/SFX called DOC this morning for being limitied to two pulses by the EPS (Instrument should have called PRC instead)
After tracing the issue to the SPB_XTD9_IMGPI/SWITCH/SCREEN_OUT switch SPB/SFX decided to take this imager out of the interlock, confirming |
Issue, posted by Yifeng Jiang on 07 Apr 2023, 23:57
|
After receiving beam from SPB, we noticed that there is a werid shape of beam in the FEL imager which was not observed yesterday.
Maybe someone left X-ray component in the beam. |
Shift summary, posted by Johan Bielecki on 07 Apr 2023, 23:03
|
Beam delivery for proposal 3378
Achievements/Observations
Collected data on liquid H20 and D20
Found conditions where only ice were seen. approx. 4h of ice data taken. Starting to |
HED Shift Summary 07.04., posted by Alejandro Laso Garcia on 07 Apr 2023, 23:00
|
Morning - Users from proposal 3455 continued with their measurement program. Beam stable during the measurements.
Afternoon - Changed the setup from 3455 to 3326.
Evening - Beginning of the alignment for users. Beam stable. |
XTD2 Si500 attenuator broken, posted by Johan Bielecki on 04 Apr 2023, 11:18
|
Attachment 1: Beam in SPB hutch with Si500
Attachment 2: Beam without Si500 |
Issue, posted by Frederik Wolff-Fabris on 04 Apr 2023, 08:37
|
TUE 08:30AM:
The SA3 Cell 17 & 18 Phase shifters do not move and encoders are damaged. A ZZ is needed to exchange the encoders. Instruments are informed
and access will take place Tuesday morning. Machine has separated the north branch. |
Summary day shift 2023-04-04, posted by Lisa Randolph, Carsten Baehtz, Alexander Pelka on 04 Apr 2023, 07:11
|
04 Apr 2023, 07:44 we realize that the SetpointsHED Macro lost all values, probably during the Karabo Crash. Since it is a macro, the values arent stored
anywhere. DOC tries to recover. Meanwhile, we found the values for 3mrad, 2.5mrad and 2mrad in old screenshots and update the macro values from that. Saving
those now locally in nextcloud/user/Alex. |
Night shift summary 02.04.2023, posted by Loic, Yi-Ping on 03 Apr 2023, 06:38
|
Achievements:
Collected more scans on cyanocobalamin, both delays scans and dynamic XAS
Issues with bad signal in beginning but good signal in the last hours |
Late Shift Summary, posted by Benjamin van Kuiken on 02 Apr 2023, 04:46
|
Achievement
Measured tXAS at the Fe L-edge of Fe(bpy)3 using both delay and energy scans.
Issues
The cold traps ran empty on the chamber resulting in a pressure spike that interlocked the DSSC
The rough vacuum of the chem |
Shift summary, posted by Tokushi Sato on 01 Apr 2023, 06:51
|
X-ray delivery
1-202 pulses, 564 kHz, stable delivery
Beam was down from 06:08
Optical laser delivery
800nm, 50 fs, 282 kHz, stable delivery
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 31 Mar 2023, 06:59
|
X-ray delivery
1-202 pulses, 564, 282, 141 , 70.5 kHz, stable delivery
Optical laser delivery
800nm, 50 fs, 282 kHz, stable delivery
Achievements/Observations |
Late Shift Summary, posted by Benjamin, Yi-Ping, Ru-Pan, Andreas on 31 Mar 2023, 05:10
|
Achievements
Optimized BOZ for Co and Fe
Estabilished Stable liquid jet flow with 30 mM Fe(bpy)3
Problems
Jet froze several times
Chamber warmed up earlier in the day. This led to a "dusting" of CNCbl on many surfaces |
shift summary March 30th, posted by Jörg Hallmann on 31 Mar 2023, 01:51
|
- seeding at ~800 uJ
- repaired the laser interlock of A.08
- EPIX back in operation |
Shift summary, posted by Tokushi Sato on 30 Mar 2023, 06:53
|
X-ray delivery
1-202 pulses, 564, 282, 141 kHz, stable delivery
Optical laser delivery
800nm, 50 fs, 282 kHz, stable delivery
Achievements/Observations |
Shift Summary, posted by Benjamin, Robert, Yi-Ping, Ru-Pan on 30 Mar 2023, 04:16
|
Achievements
Found coarse timing between XFEL and optical laser
Problems
Did not see a observe fine timing signal from silicon nitride measurement
Plan for night shift |
shift summary March 29th, posted by Jörg Hallmann on 30 Mar 2023, 02:37
|
achievments: alignment of the SDL (both branches)
measuring of samples & calibrants
|
Shift summary March 28th, posted by Jörg Hallmann on 29 Mar 2023, 01:31
|
Seeding at 9 keV with 800 - 1000uJ intensity
1. alignment of the lower branch of the SDL
2. focussing with CRL2 and check of the beam size using wire scans (slightly more than 10 um) |
Issue, posted by Angel Rodriguez Fernandez on 28 Mar 2023, 15:26
|
The door from MID side entrance was smashed and we lost the radiation permit.
The acciedent happened between 11 (when the door was lest use by MID members) and 14:19 (when the picture was taken).
It is possible that we will have the permit in the next hours to countinue. |
Shift end, posted by Jayanath Koliyadu on 26 Mar 2023, 23:27
|
X-ray delivery
1-165 pulses, 1.1 MHz - 56.4 kHz, upto 350 uJ @ 50 pC
Optical laser delivery
ns laser for imaging
Achievements/Observations |
Status, posted by Naresh Kujala on 26 Mar 2023, 13:26
|
Machine RC Raimond informed PRC that there is an issue with the A4 module that needs to fix to have a continuous operation. To fix this they need
20 min.
Agreed with all instruments (SPB, SQS, and HED) that at 13:30hr machine will take over the beam for 20 min. |
Shift end, posted by Jayanath Koliyadu on 25 Mar 2023, 23:18
|
X-ray delivery
1-165 pulses, 1.1 MHz - 56.4 kHz, upto 350 uJ @ 50 pC
Optical laser delivery
ns laser for imaging
Achievements/Observations |
HED summary 25.3., posted by Lisa Randolph on 25 Mar 2023, 21:01
|
This day we had lots of issues.
Nightshift noticed that the mirror 2 feedback was not running anymore since about 22hrs; PBLM2 cam was unknown; powercycling recovered
the camera, feedback operational again.
Continued shooting until ~9:00
At ~9:30 the whole Karabo, online cluster were dead. No control |
Shift end, posted by Jayanath Koliyadu on 24 Mar 2023, 23:14
|
X-ray delivery
1-165 pulses, 1.1 MHz - 28.2 kHz, upto 350 uJ @ 50 pC
Optical laser delivery
ns laser for imaging
Achievements/Observations |
HED shift summary 23.-24.3., posted by Lisa Randolph on 24 Mar 2023, 21:46
|
8.2 keV, 1-2 bunches, 600uJ
23.3.
did timing runs and optimized the beamline alignment
Karabo was working very slow
continued with sample alignment
performed |
Status, posted by Naresh Kujala on 24 Mar 2023, 19:42
|
Reply to elog103:
Spoke with Machine RC Thomas Wamsat and SQS.
Machine RC has some ideas to try. SQS have agreed that they can give 30 min for the machine to optimize the intensity. |
Stability Issue, posted by Tommaso Mazza on 24 Mar 2023, 18:27
|
the pulse energy in XTD10 is lowered by ~30% when SASE1 changes photon energy, compare att. 1 and 2.
In addition, the intra-train pulse energy stability gets much lower. Potentially, there is an impact on the pointing as well, which is critical
for the pump-probe experiment. |
Shift end, posted by Jayanath Koliyadu on 23 Mar 2023, 23:24
|
X-ray delivery
1-165 pulses, 1.1 MHz - 28.2 kHz, upto 400 uJ @ 50 pC
Optical laser delivery
ns laser for imaging
Achievements/Observations |
Status, posted by Romain Letrun on 23 Mar 2023, 14:31
|
After SASE1 HIREX GOTTHARD reconfiguration, we now get a single pulse per frame. This was verified by comparing data from HIREX recorded with 564 kHz
and 1.13 MHz X-ray repetition rates. Both intensity and number of peaks is comparable for the two repetition rates. |
Status, posted by Naresh Kujala on 23 Mar 2023, 13:07
|
Update for elog 99:
Now Gotthard timing is changed to new setting for 0.5 MHz.
attached screenshot with gothard timing setting |
Issue, posted by Romain Letrun on 23 Mar 2023, 11:38
|
When using 1.13 MHz X-ray repetition rate, SASE1 HIREX is capturing two pulses in a single frame giving the impression that there are more peaks within
the spectrum than there are in reality.
This was verified by recording data with one and two pulses per train, which are shown in attachment. |
Shift summary - night shift, posted by JP, Hauke, Samuele on 23 Mar 2023, 00:27 7x
|
22 Mar 2023, 23:30 Handover from late shift
Tasks for the night:
source point measurement
Sample alignment
timing
23 Mar 2023, 00:39 Source point measurement |
HED shift summary 22.03., posted by Lisa Randolph on 22 Mar 2023, 23:57
|
During the night we worked on the temporal overlap between Relax laser and XFEL.
In the morning we noticed that the beam jitter is quite large (in and out of the aperture of the CRL4 lenses). There seems to be a correlation
with the HED popin. We adjusted the TCC with x-ray and laser. Performed transmission scans. |
HED shift summary 22.03., posted by Lisa Randolph on 22 Mar 2023, 23:57
|
During the night we worked on the temporal overlap between Relax laser and XFEL.
In the morning we noticed that the beam jitter is quite large (in and out of the aperture of the CRL4 lenses). There seems to be a correlation
with the HED popin. We adjusted the TCC with x-ray and laser. Performed transmission scans. |
Shift end, posted by Adam Round on 22 Mar 2023, 21:49
|
X-ray delivery
9 keV 1 to 165 pulses ~ 300 mj per pulse - stable delivery during the day
Optical laser delivery
ns lasers for illumination only
Achievements/Observations |
Late shift summary, posted by Konstantin / Lisa / Carsten / Rahul / Toma / Masruri on 22 Mar 2023, 17:07 7x
|
22 Mar 2023, 17:08 started the log, the aim for the shift is the alignment of the sample and source point measurement. In addition to that, we also plan
to check the Greateyes camera.
22 Mar 2023, 17:53 continuing the sample alignment |
HED Summary 21.3., posted by Lisa Randolph on 21 Mar 2023, 23:39
|
Got the beam, aligned it up to the TCC, mirrors in 3 mrad configuration, checked positions for the CRLs. Energy up to 500 uJ at 8.2 keV, 2
bunches.
Feedback M2 PBLM-2 camera was UNKNOWN. Power cycle (just switch off >> on) solved the issue. Also, the screen was extracted. Insert the screen. |
Shift end, posted by Jayanath Koliyadu on 21 Mar 2023, 23:36
|
Staff: JB, PV, TS, RL, RdW, JK, AR
X-ray delivery
1-165 pulses, 1.1 MHz, upto 400 uJ @ 50 pC
Optical laser delivery |
Finding t0 with the PAM, posted by Terry Mullins on 21 Mar 2023, 19:35 7x
|
After setting timing witht he diode, we look at the PAM spectrometer and scan the laser timing a bit. We found a clear change in the spectrum -
at >t0, the spectrum was very attenuated and at t<t0, the spectrum was larger. This persisted for many 10s of ps (very unexpected behaviour).
In attachment are the LA3 timing scene, the SQS delay stage, the BAM, and the spectrometer signal from Metro at t0. att. 1 - 4. The averaged |
Late shift summary 19.03.23, posted by Robert Carley on 20 Mar 2023, 01:24
|
Activities:
Measured tr-RIXS spectra on user sample in silane solvent
Problems:
Sometimes the PPL shutter cannot be opened from the control room after searching the hutch.
|
moning shift summary, posted by Nahid, Ben on 19 Mar 2023, 15:03
|
Achievements:
measured the new sample, Silane, with different time delays
Problems
Tuning of SASE2 led to a 50% decrease in the SCS XGM intensity without affecting the SASE3 intensity. It also caused a jump in the BAM |
shift summary, posted by Johannes Moeller on 19 Mar 2023, 02:01
|
upper and lower branch of SDL aligned
beamsizes and angular mismatch characterized
vacuum leak of flight
path fixed
side view microscope re-aligned
problems with replaced MPC diamond detector. issue with in-vacuum cabeling suspected
misconfigured
timing of AGIPD fixed
splitting ratio of SDL detuned while HXRSS intensity decreased significantly. Possibly correlated.
With |
shift summary, posted by Johannes Moeller on 18 Mar 2023, 01:45
|
stable HXRSS delivery at 8.99 keV, 1 bunch. XGM intensity during the day decreased from 750 uJ to 600 uJ.
Vacuum in sample chamber
stabilized with cold trap and full beam path opened to AGIPD and endstation
Again problems with smaract stages in DES, but imager in a good
position to continue.
First scattering data recored from water jet. Unknown, bimodal intensity distribution
Focus characterization |
Late shift summary 17.03.2023, posted by Robert, Zhong, Manuel on 17 Mar 2023, 23:43
|
Activities:
continued tr-RIXS scans
tried to find ways to mitigate the energy drifts of the mono (see below)
confirmed in user
data that the FEL-PPL timing was not changing (see below)
setting up for tr-RIXS at beginning of night shift
Problems: |
Shift summary, posted by Johannes Moeller on 17 Mar 2023, 01:48
|
The intensity of the Seeding decreesed from 850 uJ to 550 uJ during the time between 20:00 and 02:00.
The Spectral purity also got worst, the beam in HIREX looks to have more SASE shoulders.
Between 18 and 20 we show a prossible transiant signal, PPL, of the lower branch. But a problem with the monochromator in the MID opt Hutch trigger |
End of shift, posted by Johannes Moeller on 16 Mar 2023, 01:35
|
Stable HXRSS delivery with >800 uJ, 1 bunch, 8.99 keV.
Re- Alignment of X-ray beam performed.
-Beam position defined for sample interaction in SAM CAM1. Do not touch SAM CAM1 |
Shift summary, late 2023.03.15, posted by Robert, Manuel on 16 Mar 2023, 00:26
|
Activities:
Found coarse and fine timing between FEL and PPL at 266nm
Set up for tr-RIXS during the night
Problems:
2 fastADC channels appear to be dead.
Optical locking of the PPL syncronisation system took a very long time (> 30 minutes)
|
morning shift summary, posted by Benjamin, Nahid, Raphael, Philippe, Victoria, Timo on 15 Mar 2023, 17:01
|
Achievements
Found RIXS signal from liquid jet
Measured static RIXS and PFY-XAS spectrum of Co(cp)(CO)2
Problems
hRIXS detector has a data latency issue and images were not being recorded in the DAQ. This required ~2-3 hours to solve plus time lost |
shift summary, posted by Johannes Moeller on 15 Mar 2023, 01:50
|
HXRSS delivery, 600 - 700 uJ, 1 bunch, 8.991 keV. Pedestal visibly in HIREX, not checked with MID spectrometer yet.
beamline aligned
and beam brought to popin imager
struggle with jet pumping, to be continued
beam brought into experimental hutch, first rough alignment
of reference samples and cameras
Epix flight path leaked and window re-glued
|
Issue, posted by Harald Sinn on 14 Mar 2023, 20:26
|
SCS could only use two pulses, because the SXP imager was still in the beam and SXP shutter open.
I removed the SXP imager, so SCS can now get the full beam. The SXP shutter is still open and SXP instrument contacted via email to find out,
if the shutter is intentionally open. |
Issue, posted by Harald Sinn on 14 Mar 2023, 14:40
|
In order to optimise the performance of SASE2 self seeding, a stronger compression setting is required.
The RC proposed to increase the time window between SASE2 and SASE1/3 to avoid performance degradation and cross talk effects on SASE1/3.
I discussed with SCS and FXE instruments and there seems to be nothing against moving the time trigger by 30 micro seconds later, as proposed |
Issue, posted by Harald Sinn on 14 Mar 2023, 10:56
|
The longitudinal feedback on SA1/3 was swicthed off by mistake over night. When it will be switched on, the beam may wiggle a bit an SA1+SA3 for
short.
We agreed with SCS and FXE that this will be done today at 11:30 |
SA2 status, posted by Frederik Wolff-Fabris on 11 Mar 2023, 12:46
|
The SA2 XTD1 XGM is current offline since Saturday morning.
Yesterday, Friday, it already started to present communication problems ( https://ttfinfo.desy.de/elog/FileEdit?file=/XFELelog/data/2023/10/10.03_a/2023-03-10T19:06:29-00.xml&xsl=/elogbook/xsl/elog-fileform.xsl&mode=edit
) and today it became clear a Hard drive is broken and need to be exchanged. |
Shift summary, posted by Ulf Zastrau on 06 Mar 2023, 06:48
|
X-ray delivery stable in intensity, 1300-1400 mJ at 8150 eV SASE.
user experiment 3430 (Zastrau / Mishchenko)
|
Night shift summary 05.01.2023, posted by Teguh, Luigi on 06 Mar 2023, 06:20
|
Achievements:
1. Continued measuring time-resolved and static RIXS on water (run table in elog entry #103)
2. Periodically checked spatial overlap and BAM compensator in-between measurements. |
Shift summary, posted by Juncheng E on 05 Mar 2023, 23:13
|
X-ray delivery
9.3 keV, 202 pulses, 564 kHz, intensity slope was fine
Optical laser delivery
800 nm, 68 pulses, 188 kHz. stable delivery
ns laser for illumination
Achievements/Observations |
Late shift summary 05.03.2023, posted by Sergii, Andreas on 05 Mar 2023, 23:04
|
Achievments
-RIXS scans at different delay times and x-ray energies
-Cross check fine timing |
late shift summary, posted by Sergii, Andreas on 04 Mar 2023, 23:04
|
Achievements:
- we replaced broken SMA cable, and added an angle-connector at sample holder to aid the sample rotation when moving diagnostics to the flat
jet |
Shift summary, posted by Tokushi Sato on 04 Mar 2023, 22:55
|
X-ray delivery
9.3 keV, 202 pulses, 564 kHz, intensity slope was fine
Optical laser delivery
800 nm, 68 pulses, 188 kHz. stable delivery
ns laser for illumination
Achievements/Observations |
Night Shift Summary on 04.03.2023, posted by Teguh, Luigi on 04 Mar 2023, 07:00
|
Achievements:
- Improved the vacuum of the chamber slightly
- Found the spatial overlap between FEL and jet |
Shift summary, posted by Tokushi Sato on 03 Mar 2023, 23:27
|
X-ray delivery
9.3 keV, 202 pulses, 564 kHz, intensity slope was flat
Optical laser delivery
800 nm, 68 pulses, 188 kHz. stable delivery
ns laser for illumination
Achievements/Observations |
Late shift summary, posted by Giuseppe, Sergii on 03 Mar 2023, 23:25
|
achievements:
change the optical laser to 2 um
found focus of 2 um beam
found saptial overlap
course timing was checked
looking
for fine timing using SiN
problems: |
Shift summary, posted by Ulf Zastrau on 03 Mar 2023, 23:06
|
Beam delivery SASE 8,25 keV, 1300 µJ. Intensity stable,
but beam jittery in horizontal.
PRC (Dommach) did a ZZ around 13:00 and switched off coolling of M1 in XD1, but no effect on beam jitter. |
Shift summary, posted by Tokushi Sato on 02 Mar 2023, 23:13
|
X-ray delivery
9.3 keV, 202 pulses, X-ray intensity had slope over train, 30 % difference between first and last pulse in the train
Sometime
strange intensity slope was observed (screen shot was attached)
Optical laser delivery |
late shift summary, posted by Giuseppe Mercurio and Sergii on 02 Mar 2023, 22:58
|
achievements:
knife edge scans of OL to find lens position corresponding to the smallest beam size
knife edge scans of FEL to determine
the position to proceed for spatial overlap
liquid jet was set up and it's running since afternoon
measured x-ray absortion via |
Stability Issue, posted by Ulf Zastrau on 02 Mar 2023, 22:54
|
HED would like to report that since 2 days the SASE2 beam is instable.
The attached movie shows, on the left (90° rotated, so up-down is left-right)
the beam at the end of the HED hutch, and on the right its the same beam |
Night shift summary 02.03.2023, posted by Teguh, Luigi on 02 Mar 2023, 05:41
|
Achievements:
1. Performed knife-edge scan. The beam size is currently at 5 um x 120 um.
2. Aligned the spectrometer at O K edge (2.8 pixel FWHM, 110 meV resolution, 4800 resolving power) |
Late shift summary 01.03.2023, posted by Sergii, Martin on 01 Mar 2023, 23:31
|
Achievments:
- Align DPS to remove clipping of X-rays
- Get better focusing of PPL in the chamber |
Shift summary, posted by Tokushi Sato on 01 Mar 2023, 23:25
|
X-ray delivery
9.3 keV, 1-352 pulses, 0.8 mJ, stable delivery
Optical laser delivery
800 nm, 101 pulses, 282 kHz, stable delivery
ns laser for illumination
Achievements/Observations |
Shift summary, posted by Alexander Pelka on 01 Mar 2023, 16:07
|
Day shift 28.02
Got the beam, aligned it up to the TCC, mirrors in 3 mrad configuration, checked positions for the CRLs. Optimised
beam at the HAPG. Beam stability was fine, energy up to 1,5 mJ at 8.2 keV, and up to 1 mJ at 9.1 keV (used for the spectrometer calibration). |
Shift summary, posted by Tokushi Sato on 28 Feb 2023, 23:24
|
X-ray delivery
9.3 keV, 1-352 pulses, 0.8 mJ, stable delivery
Optical laser delivery
800 nm, 1-01 pulses, 282 kHz, stable delivery
ns laser for illumination
Achievements/Observations |
Issue, posted by Romain Letrun on 28 Feb 2023, 07:17
|
In the public status display, it looks like FXE is taking the beam even though their shutter is closed. |
Shift Summary Feb 26th, posted by Felix Brausse on 27 Feb 2023, 02:10
|
Moved out MONO, aligned SDL without MONO
Looked at both beams on DES
Struggled to get the same beam size with SDL inserted compared to direct beam (~8 um); fixed by adjusting slits |
Shift Summary Feb 25th, posted by Felix Brausse on 26 Feb 2023, 01:37
|
Aligned both branches of the split-and-delay line.
Brought the beam into the experimental hutch to image it on the x-ray eye; the
sample hexapod is not moving (again?); the values keep changing, but the device clearly does not move
PLEASE INVESTIGATE TOMORROW
Looked at the beam on the Zyla (Zyla is still in)
|
Shift summary, posted by Alexey Zozulya on 24 Feb 2023, 22:57
|
- Measured the speckle patterns using EPIX detector to estimate the beamsize focused down by 1D lens (Row 13).
- Heat load test to NFL #18 with 50 bunches.
- Measured the speckle patterns with 2D focusing lens to estimate the beamsize. wire edge scan? |
Shift summary, posted by Adam Round on 24 Feb 2023, 05:39
|
Staff: AR, KK
X-ray delivery
9.3keV
Optical laser delivery |
shift summary, posted by Jan-Etienne Pudell on 24 Feb 2023, 00:55
|
We tested pulse on demand scans with scantool and confirmed that there is only one shot per scan point. This was used to print the footprint in
a LIf crystal.
We took caustic scans for 1D diamond lenses using a wire and using specles to extract the beamsize. |
shift summary, posted by Jan-Etienne Pudell on 23 Feb 2023, 01:51
|
After realignement of M1 and M2 we could solve the problem of the elogated beamprofile. Different lens setting were prealignd for the use in combination
with the NFL.
We took data for several 1D diamond lenses together with a Vycor sample to extract the beamsize from the specles. |
Stability Issue, posted by Peter Zalden on 22 Feb 2023, 14:53
|
Instability observed today at 14:05, reported to PRC and BKR, including RC: We saw RMS jitter amplitude of up to 4 mm at FXE imager. The jitter was also
seen by the upstream XGM with 100 um RMS amplitude. So it is something from the source.
This instability is suddenly appearind/disappearing and was absent over night and started this morning at 7h to occasionally turn on. It appear |
SASE1 changing photon energy changes the 2-color setup in SASE3, posted by Thomas Baumann on 21 Feb 2023, 23:31
|
We were set-up for 5.7 keV photon energy in SASE1. We made a test with BKR to change this energy to 9.3 keV. This had an effect on our two-color setup:
The first color pulse energy increased. See att 1. Green is the reference at 5.7 keV, blue is at 9.3 keV.
Att 2 shows the XGM history: pulse energy went up to 200 uJ in SQS XGMD during the change. |
shift summary, posted by Jan-Etienne Pudell on 21 Feb 2023, 23:07
|
- Tunnel + experimental hutch alignment (Mirrors, CRL1 and CRL2)
- Aligned main devices: Optics Peter, x-ray eye, EPIX and Zyla and pin holes.
- Tried some alignment of the NFL (1D) lenses with pin hole and not pre focussed beam. We found a lot of scattering from pinholes which dominates |
Night Shift Summary, posted by Ben, Manuel on 20 Feb 2023, 06:46
|
Achievements
Measured self-refreenced XAS spectra with single color baem at the Mg K-edge
Problems
Liquid jet required some mantanence during the shift
Some newton detector images filled with NANs
|
Shift summary, posted by Richard Bean on 19 Feb 2023, 23:28
|
X-ray delivery
9.3 keV, 120 pulses
Good Beam Stability -~1mJ
Achievements/Observations
Double Slit and V-Pattern Interference Measurements
Nearfield Ptycho-Scans
Nano-KB (@Richard)
Issues |
Shift summary 2023-02-19, posted by Motoaki Nakatsutsumi, Oliver Humphries, Carsten Baehtz on 19 Feb 2023, 23:25
|
8.2 keV, 750 uJ.
Short summary
- Optimize the downstream nanofocus CRL to image the sample to our detector (optique Peter) - successful) |
late shift summary, posted by bouffetier on 19 Feb 2023, 19:51
|
19 Feb 2023,15:30 Shift handover
Runs will be added in the general Elog for data runs and acqusitions (Elog-4)
|
Day shift summary, posted by Erik Brambrink on 19 Feb 2023, 08:06
|
19 Feb 2023, 08:08 Hand over from night shift
Added polarizer in the PAM beam in the optics hutch, reequilibrated reference arm of PAM
19 Feb 2023, 08:09 Darks taken for JF 1 and 2 |
Shift summary - night shift 2023-02-18, posted by Motoaki Nakatsutsumi, Carsten Baehtz, Olver Humphries on 19 Feb 2023, 05:29
|
18 Feb 2023, 23:37 Together with the last shift members, we continued shooting laser on Cu 25 um thick wire for another 2 hours. We got excellent quality
x-ray imaging with a series of time delay up to several ns (eLog ID 39). X-ray imaging is now commissioned. The magnification was x7.5.
19 Feb 2023, 01:30 We tried to go to x20, but we couldn't find the x-ray beam. We even put the burn paper in front of the Optique Peter to |
Shift summary, posted by Richard Bean on 19 Feb 2023, 00:34
|
X-ray delivery
9.3 keV, 1-120 pulses,
good stabiltiy, lowish flux ~900uJ, but experimental requirements were met
Achievements/Observations
Finished doule slit measurements at micron beam
Alignment to direct beam
Sample position for the sand paper found
Some |
Night Shift summary, posted by Benjamin, Manuel, Ricardo on 18 Feb 2023, 07:06
|
Achievements
Used scanning of liquid jet to improve S/N
Measured x-ray PP XAS as a function of the delay between the two X-ray colors
Scan
energy of probe pulse with fixed pump energy
Problems |
Shift summary - night shift 2023-02-17, posted by Motoaki Nakatsutsumim, Carsten Baehtz, Olly Humphries on 18 Feb 2023, 00:32
|
Ealier shift members managed to get a good quality image on Optique Peter by imaging the sample plane to the Optique Peter with downstream nanofocus
(CRL4b). The quality is far superiour compared to the one with upstream nanofocus, which does just a projection of sample (backlight). The decision is
to stay with the downstream CRL. They had a few full power shots. The problem of reading Zyla data when rotation = 0 is solved by Olly. He put the script |
Late shift activities, posted by bouffetier on 17 Feb 2023, 17:16 7x
|
17 Feb 2023, 17:15 : We centered Pin in the FEL beam and then imaged this pin with ILM and FSI to get common references.
We corected astigmatism with OAP |
late shift summary, posted by Laurent Mercadier, Luigi Adriano on 17 Feb 2023, 02:24
|
2 color mode
Achievements
Fluence scan
delay scan to identify cross talk of two colors
Optimized beam size
|
Shift summary, posted by Chan Kim on 16 Feb 2023, 23:15
|
X-ray delivery
9.3 keV, 1-120 pulses
Optical laser delivery
No Optical Laser
Achievements/Observations |
End of Shift, posted by Trey Guest on 16 Feb 2023, 23:01
|
Staff: KK, RB, TG, AS, CK
X-ray delivery
9.3 keV, 1-120 pulses,
Optical laser delivery |
SA2 status, posted by Frederik Wolff-Fabris on 16 Feb 2023, 14:04
|
Data for the Horizontal jitter at the HED Pop-In was observed during beam delivery on cw05 (03-05.Feb) and cw07 (14-16.Feb) (see attached pictures).
We have a similar base jitter in both periods of beam delivery to HED, ranging from a minimum of 50-60um to around 80-100um in both operational
weeks. |
Shift summary, posted by Chan Kim on 16 Feb 2023, 07:17
|
Shift summary 15.2.2023 (Wednesday)
X-ray delivery
9.3 keV, 1-200 pulses, 1.0 mJ, pulse energy fluctuation due to SA3 tunning & special operation mode (SCS)
Optical |
late shift summary 2nd day, posted by Luigi, Laurent on 15 Feb 2023, 23:05
|
Achievememts:
optimised the beam rep rate to value of 140KHz for a better signal
changed nozzles and refilled the reservoir
Improved
notebook for data analysis
Cammille made an online tool to see correlations between Viking and XGM --> very useful!
Night |
Night Shift Summary, posted by Benjamin van Kuiken on 15 Feb 2023, 06:54
|
Achievements
Located flat jet and attempted measurement of XAS at several incident energies 1300, 1305, 1315 eV
Problems
We have difficulty locating the beam on the sample
We have not found a signal on eith of the diodes in the Chem chamber.
Knife |
late shift shift summary, posted by Laurent Mercadier, Luigi Adriano on 15 Feb 2023, 01:40
|
Achievements
Two color mode established with 11.5 GeV, 1.335 keV col1, 1.27 keV col2
Beam size characterized using Viking + online tool
Jet
found by scanning and looking at transmitted signal on Viking
Problems |
Issue, posted by Frederik Wolff-Fabris on 13 Feb 2023, 19:02
|
SA3 SCS exit slit: the upper blade was detached from the motor and fall into closed position. Maurizio V. and F. Wolff-Fabris tried to move it out
of the beam by placing spacers to hold the blade up.
Bottom blade was moved down with the motors. Currently both motors are disconnected. |
Shift summary, posted by Tokushi Sato on 13 Feb 2023, 07:17
|
X-ray delivery
9.3 keV, 1-85 pulses, 1 mJ, stable delivery
Optical laser delivery
800 nm, 1-226 pulses, stable delivery
ns laser for illumination
Achievements/Observations |
Shift summary, posted by Tokushi Sato on 12 Feb 2023, 06:53
|
X-ray delivery
9.3 keV, 1-85 pulses, 1 mJ, stable delivery
Optical laser delivery
800 nm, 1-226 pulses, stable delivery
ns laser for illumination
Achievements/Observations |
Shift summary Feb 11th, posted by Jörg Hallmann on 12 Feb 2023, 01:56
|
intense data taking on various samples
2 main issues:
- data collection using the optimize macro is too fast for the system and calibration and the data transfer from SDD to HDD is slower than collecting |
Status, posted by Andreas Galler on 11 Feb 2023, 13:55
|
Gun Modulator Problems
Gun Trip at 11:23 and since then the Modulator trips after each restart.
Accelerator Shift Crews and On Call personnel working on fixing the issue. |
Shift end, posted by Jayanath Koliyadu on 11 Feb 2023, 07:06
|
X-ray delivery
9.3 keV, 1-85 pulses, 1 mJ, stable delivery
Optical laser delivery
800 nm, 1-226 pulses, stable delivery
ns laser for illumination
Achievements/Observations |
Shift summary, posted by Jörg Hallmann on 11 Feb 2023, 01:09
|
sucessfull data taking for user samples
beam loss for ~15 min and a small issue with scannerX of the FSSS (could be fixed without support) but otherwise smooth operation
contact with ITDM since the data collection speed could be too high for the transfer speed from SDD to HDD - should be kept under investigation.... |
Shift end, posted by Jayanath Koliyadu on 10 Feb 2023, 08:17
|
X-ray delivery
9.3 keV, 1-85 pulses, 1 mJ, stable delivery
Optical laser delivery |
Shift end, posted by Jayanath Koliyadu on 09 Feb 2023, 07:14
|
X-ray delivery
9.3 keV, 1-85 pulses, 1.3 mJ, stable delivery
Optical laser delivery
800 nm, 1-226 pulses, stable delivery except for shift change issues
Achievements/Observations |
Shift summary Feb 8th, posted by Jörg Hallmann on 09 Feb 2023, 01:11
|
stable beam at 9kev (about 1.1 mJ)
checks of the sample environment required for the upcoming user experiment
test data aquisition of SiO2 samples (data analysis still ongoing) |
SA3 status, posted by Andreas Koch on 08 Feb 2023, 11:14
|
Bunch number control - SA3 FEL imager
As announced today in the XO meeting the SA3 FEL imager has a new feature, see screenshot, encircled:
- In case of danger for the YAG screen the bunches SA3 are set to "0" via the BunchPatternServer (SA3 Main scene). |
Issue, posted by Harald Sinn on 05 Feb 2023, 15:18
|
15:15 SCS called and reported an issue with one of the motors of the SCS exit slit. DOC already looked at the problem and could not make the motor
move. XRO (Maurizio) is now informed and looks at the problem
17:10 ZZ access to XTD by Maurzio and Mikako |
morning shift summary, posted by Natalia, Zhong on 05 Feb 2023, 12:32
|
achievements:
- Viking spectrometer set up in 8th order around 1280eV and calibrated
problems: |
Shift summary, posted by karen appel on 05 Feb 2023, 08:40
|
Start up of HED ongoing for the three shifts
Day shift:
work on the new X-ray alignment scheme at 2, 2.5 and 3 mrad: test was positive and we can not work with Tx of M3 fixed at 4 mm for all |
Shift summary, posted by karen appel on 04 Feb 2023, 08:34
|
We took the beam from 7 am, 24 h operation in three shifts.
We set up a new scheme for aligning the beam to the HED branch, which gives one X-ray axis downstream of the tunnel even if we operate at different
angles of M1 and M2 (i.e. 3 to 2 mrad). This relies on a fixed M3 Tx position and was tested for 2.5 mrad and 3 mrad during the shifts. CRL3 in the HED |
Shift summary, posted by Peter Zalden on 02 Feb 2023, 09:25
|
FXE bring-up, summary of shifts 31.1. and 1.2.:
Beam delivery (11.5 GeV)
9.3 keV, 1.5 mJ (31.1.)
7.1 keV, 1.7 mJ (1.2.)
Horizontal beam jitter 200 µm (RMS), a bit more than usual
Tunnel |
Issue, posted by Chan Kim on 02 Feb 2023, 06:37
|
SPB_IRU_DPA/MOTOR issue
X stage looks okay, but Y, AX, and AY values have been changed by 2-3mm. (see attachment 1 and 2)
|
SASE2 Summary of Maintenance Period and Ramp up activities, posted by Maurizio Vannoni on 30 Jan 2023, 19:06
|
SASE2 Summary of Maintenance Period and Ramp up activities
Maintenance
- Many vibration tests were done. |
SASE1 Summary of Maintenance Period and Ramp up activities, posted by Maurizio Vannoni on 30 Jan 2023, 16:31
|
SASE1 Summary of Maintenance Period and Ramp up activities
Maintenance
- MC2 library update was deployed by EEE and most of the motors were tested afterwards |
SASE3 Summary of Maintenance Period and Ramp up activities, posted by Maurizio Vannoni on 30 Jan 2023, 15:21
|
SASE3 Summary of Maintenance Period and Ramp up activities
Maintenance |
ZZ Access on 24th January (19:30h) - Replacement of Motor on SASE2 Undulator - Cell 17 Phase Shifter, posted by Raúl Villanueva-Guerrero on 25 Jan 2023, 08:44
|
Dear all,
last evening Suren Karabekyan and myself did a short notice ZZ access to XTD1. The reason is that machine operators detected the lack of response
on the Cell 17 Phase Shifter. The intervention was successful and around 20:30 we left the tunnel. |
All SASE's - SEPS Interlock Test - Results, Status & Upcoming Schedule, posted by Raúl Villanueva-Guerrero on 25 Jan 2023, 08:40
|
Dear all,
please find here a summary of the status on this critical topic provided yesterday evening (around 19:15) by Zunaira Ansari (extract from her
e-mail). |
Status, posted by Jan Gruenert on 23 Jan 2023, 10:43
|
Status of machine SASE tuning (just before switching off for monday maintenance):
11.5 GeV operation
SASE1
SASE2
SASE3
Photon
energy
7 keV
7 keV
700 eV
Max. obtained average pulse energy
3.25 mJ
1.35 |
Issue, posted by Jan Gruenert on 22 Jan 2023, 18:40
|
SASE1 blocked to 1 bunch/train by EPS interlock (sic, not 2 but 1) --- PARTIALLY RESOLVED
Several issues:
1) MODEM device is broken, in state UNKNOWN, see ATT#1 and ATT#2. Fixed with deinstatiating and then using BECKHOFF_ASSISTANT to re-instantiate. |
Analyze and quantify the mispositioning of the new 4mm-aperture behind the undulator, posted by Jan Gruenert on 21 Jan 2023, 16:38
|
Goal: Analyze and quantify the mispositioning of the new 4mm-aperture behind the undulator
Positions in tunnel:
ABSP4.2422.SA2 = ABSP4.CELL37.SA2 L_z position 2422.558m
Last closed undulator for this test is cell16 at 2294m (at end of |
Issue, posted by Jan Gruenert on 17 Jan 2023, 10:25
|
SASE3 peration issue - SOLVED
Controls issue, the machine cannot make beam in SASE3.
From
BKR / DOOCS the problem description is: Big Brother is blocking SASE3 beam due to an EPS power limit of 0 Watt.
Looking into the SASE3 karabo topic, many devices are not instantiated, ATT #1.
The state of the PREABS preabsorber is not known |
Issue, posted by Jan Gruenert on 16 Jan 2023, 19:50
|
Problem: Beam operation in SASE2 is prohibited by SEPS / MPS
Origin of problem: HED-CRL3
(this was already an issue during the past weekend) |
CRL3: recalibration of y axis, test of x range and move to SEPS interlock trigger position, posted by karen appel on 16 Jan 2023, 16:01
|
CRL3 arm 2, 5 and 9 were mecanically religned to the V groove and retracted to some y position.
The y motor position was recalibrated by moving the motor to the lower limit switch, moving it up by 0.5 mm and then recalibrating the motor
and encoder position to the former software limit position. |
Status, posted by Theophilos Maltezopoulos on 16 Jan 2023, 11:33
|
I started the upstream XGMs in XTD2, XTD1, and XTD10. |
Diamond detector / DDM commissioning, posted by Wolfgang Freund on 26 Nov 2022, 10:40
|
beam: 30 keV / 30 uJ
reduce to single bunch for insertion
put FEL imager in |
Jet alignment test- obeserver, posted by Jaydeep Patel on 29 Oct 2022, 11:03
|
Nozzle type
Nozzle Aperture(µm)
Sample |