Shift summary, posted by Giuseppe Mercurio on 09 Feb 2024, 07:15
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night shift summary
achievements:
characterized FEL beam size to have 20 um x 20 um (Hor x Ver)
exchanged sample
closed KB baffle, HSLITS, guardstage
started |
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Shift summary, posted by Giuseppe Mercurio on 11 Feb 2024, 06:28
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Night shift summary
Andreas, Giuseppe
we finished to measure sample 17 and 41 in CARD 06_Y2018F04
we transferred sample Card_07_Y2018F19
we started measuring |
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Shift summary, posted by Giuseppe Mercurio on 13 Feb 2024, 06:38
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shift summary
Andreas, Giuseppe
continued pumpprobe measurements
around 5:30 we could not see any image at the MTE3 camera (after sample transfer), we tried |
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Shift summary, posted by Giuseppe Mercurio on 20 Mar 2024, 23:03
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Late shift summary
coarse timing
installed laser shutter on the laser
breadboard and I0 diode
exchanged camera of microscope to improve resolution
knife edge scans of FEL after BOZ
realized
that knife edge scans of OL cannot be done with present setup because OL cannot reach the diode in DIAG
Nahid prepared FeByP 1 liter, 30 mM
preparation |
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Shift summary, posted by Giuseppe Mercurio on 07 Jun 2024, 15:19
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Morning Shift Summary for 07.06.2024 (Teguh, Natalia)
Achievements:
Aligned the beamline to deliver the FEL beam into the hutch
Check the FEL beam size using knife-edge scans
Requested
BKR to re-tune the FEL to achieve higher pulse energy. They are still tuning, but we aim to reach 3 mJ per pulse
Problems: |
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Shift summary, posted by Giuseppe Mercurio on 09 Jun 2024, 22:21
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Late Shift summary
Achievements:
- recovered the beam overlap |
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Shift summary, posted by Giuseppe Mercurio on 24 Jul 2024, 15:22
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Shift summary (Natalia, Giuseppe)
Achievements:
M1, M2 pitches adjusted
Grating AX changed value during shutdown, encoder offsets have been recalibrated
Set up
SCS, 9mrad, HEPM, grating configuration
Set up SCS, 9 mrad, HEPM, blank configuration
Problems: |
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Shift summary, posted by Giuseppe Mercurio on 29 Jul 2024, 06:45
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## Shift summary night July 28th-29th
Achievements:
- we saw signal on both MCPs (with a voltage of around 1500 V). We used the MCPs to measure XAS at Cu L edge at different theta angles from 120 |
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SA1 status, posted by Frederik Wolff-Fabris on 31 Jan 2024, 11:24
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A ZZ is taking place today, 31.01 at 11:30, in XTD9 to verify and fix the M3 Pop-in screen which is currently blocking the beam. It is not
yet clear if this is an electrical or mechnical problem.
** Update 13:05: ZZ intervention is finished and successful. A mechanical issue due to a loose coupling between motor and spindle was fixed. |
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Issue, posted by Frederik Wolff-Fabris on 20 Mar 2024, 12:41
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BKR called PRC around 06:10AM to inform on vacuum issues at SA1 beamline leading to a lost beam permission for the North Branch.
VAC-OCD found an ion pump in the PBLM / XTD9 XGM presented a spike in pressure that triggered valves in the section to close.
After reopening valves the beam permission was restored; further investigations and monitoring in coming days will continue. Currently all systems |
Status, posted by Frederik Wolff-Fabris on 25 Apr 2024, 21:11 
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V0 valve for SA2 closed as the pump P22090I at HED branch enters in wrong state. This closed nearby vacuum valves for HED branch and consequently
V0. Vacuum levels at the section remained in 10^-9 all time.
Thanks to VAC-OCD Denis Finze we removed this pump signal from interlock to allow operation in SA2 at MID branch. Further investigation will |
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SA2 status, posted by Frederik Wolff-Fabris on 04 Nov 2024, 15:07
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Dear MID colleagues, Svitozar (PRC), Bolko and Shan (RCs),
This morning we faced the situation where MID was limited to 400 pulses (mode M) via the EPS signals. The current RF window set at the machine
allows to the requested 450 pulses. |
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Issue, posted by Frederik Wolff-Fabris on 12 Nov 2024, 10:07
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- While FEL IMG with YAG screen was inserted in SA1, EPS/MPS was not limited to the expected 2 bunches, but to 30 bunches;
- It was found
the condition #3 ("SA1_XTD2_VAC/Switch/SA1_PNACT_Close") at the EPS Mode-S was disabled which should be always enabled;
- Condition
#3 has been enabled again and now SA1 is limited to 2 bunches, as expected when YAG screen is inserted.
Further investigations will be done to |
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Issue, posted by Frederik Wolff-Fabris on 15 Nov 2024, 10:50
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SA2 cell#5 undulator segment moved at ~09:45AM Fri to 25mm without aparent reason and undulator experts need a ZZ to exchange power supply; FEL
instensity dropped from 230uJ to 60uJ s consequence.
RCs are preparing south branch for the iminent ZZ. HED is informed. |
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Status, posted by Dirk Raiser on 17 May 2024, 10:42
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Laser status:
After the laser issues listed in https://in.xfel.eu/elog/OPERATION-2024/99 the
late shift was finally able to find a timing setting for the amplifier trigger that was beyond stable settings under usual conditions, but which allowed |
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Shift summary, posted by Chan Kim on 31 Jan 2024, 23:26
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31.01.2024 (Day shift)
X-ray delivery
10 keV
1200 - 400 uJ (significant pulse energy slope within train)
Optical laser delivery |
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Shift summary, posted by Chan Kim on 13 Mar 2024, 23:41
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X-ray delivery
6 keV, 2.6 mJ/pulse, stable delivery
Optical laser delivery
800nm PP laser, stable delivery
Achievements/Observations |
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Shift summary, posted by Chan Kim on 15 Mar 2024, 00:16
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X-ray delivery
6 keV, 2.4 mJ/pulse, stable delivery
Optical laser delivery |
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Shift summary, posted by Chan Kim on 15 Mar 2024, 23:43
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**X-ray delivery**
- 6 keV, 3.2 mJ/pulse, stable delivery
**Optical laser delivery** |
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Shift summary, posted by Chan Kim on 28 Mar 2024, 14:54
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X-ray delivery
12.72 keV, 10 Hz, NOT stable delivery, pointing drastically changed in the afternoon, presumably due to the train-on-demand operation
at SASE2
Optical laser delivery |