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: |
|
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 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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 |
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. |
|
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. |
|
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. |
|
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 |
|
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 |
|
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 |
|
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 |
|
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 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 |
|
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 |