Late shift summary 01.03.2023, posted by Sergii, Martin on 01 Mar 2023, 23:31
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Achievments:
- Align DPS to remove clipping of X-rays
- Get better focusing of PPL in the chamber |
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Night shift summary 02.03.2023, posted by Teguh, Luigi on 02 Mar 2023, 05:41
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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) |
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late shift summary, posted by Giuseppe Mercurio and Sergii on 02 Mar 2023, 22:58
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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 |
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Late shift summary, posted by Giuseppe, Sergii on 03 Mar 2023, 23:25
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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: |
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Night Shift Summary on 04.03.2023, posted by Teguh, Luigi on 04 Mar 2023, 07:00
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Achievements:
- Improved the vacuum of the chamber slightly
- Found the spatial overlap between FEL and jet |
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late shift summary, posted by Sergii, Andreas on 04 Mar 2023, 23:04
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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 |
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Late shift summary 05.03.2023, posted by Sergii, Andreas on 05 Mar 2023, 23:04
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Achievments
-RIXS scans at different delay times and x-ray energies
-Cross check fine timing |
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Night shift summary 05.01.2023, posted by Teguh, Luigi on 06 Mar 2023, 06:20
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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. |
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morning shift summary, posted by Benjamin, Nahid, Raphael, Philippe, Victoria, Timo on 15 Mar 2023, 17:01
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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 |
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Shift summary, late 2023.03.15, posted by Robert, Manuel on 16 Mar 2023, 00:26
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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)
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Late shift summary 17.03.2023, posted by Robert, Zhong, Manuel on 17 Mar 2023, 23:43
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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: |
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moning shift summary, posted by Nahid, Ben on 19 Mar 2023, 15:03
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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 |
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Late shift summary 19.03.23, posted by Robert Carley on 20 Mar 2023, 01:24
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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.
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Shift Summary, posted by Benjamin, Robert, Yi-Ping, Ru-Pan on 30 Mar 2023, 04:16
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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 |
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Late Shift Summary, posted by Benjamin, Yi-Ping, Ru-Pan, Andreas on 31 Mar 2023, 05:10
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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 |
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Late Shift Summary, posted by Benjamin van Kuiken on 02 Apr 2023, 04:46
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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 |
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Night shift summary 02.04.2023, posted by Loic, Yi-Ping on 03 Apr 2023, 06:38
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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 |
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summary late shift day 1, posted by Laurent Mercadier, Martin Teichmann on 18 Apr 2023, 23:01
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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 |
Issue, posted by Laurent Mercadier on 19 Apr 2023, 17:51 
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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 |
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shift summary day 2 UP3463, posted by Laurent Mercadier, Martin Teichmann on 19 Apr 2023, 23:20
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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 |