Night shift summary , posted by Robert Carley on 11 Jun 2023, 07:40
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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 |
Night shift summary, posted by Benjamin van Kuiken on 12 Nov 2023, 07:24 
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# Shift Summary
Achievements
- Found RIXS signal from CuO as well as off-resonant elastic line signals from NiO and CoO |
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Night Shift summary, posted by Benjamin, Manuel, Ricardo on 18 Feb 2023, 07:06
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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 |
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Night Shift Summary on 15.08.2023, posted by Sergii Parchenko, Manuel Harder on 17 Aug 2023, 11:06
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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 |
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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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Night Shift Summary, posted by Benjamin van Kuiken on 15 Feb 2023, 06:54
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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 |
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Night Shift Summary, posted by Ben, Manuel on 20 Feb 2023, 06:46
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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
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New screens installed in FEL imager SA3, posted by Andreas Koch on 21 Jun 2023, 15:12
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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 |
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Morning shift summary, 26.10.2023, posted by Sergii, Teguh on 26 Oct 2023, 15:03
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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 |
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Morning shift summary, posted by Giuseppe Mercurio, Teguh Asmara on 07 Jun 2023, 15:04
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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: |
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Morning shift summary, posted by Giuseppe Mercurio on 01 Oct 2023, 14:48
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# Morning shift summary
Giuseppe, Martin
* achievements |
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Morning Shift summary, posted by Giuseppe, Andreas on 30 Jul 2023, 18:35
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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, |
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Morning Shift Summary, 25.10.2023, posted by Sergii, Teguh on 25 Oct 2023, 15:18
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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: |
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Morning Shift Summary, 24.10.2023, posted by Sergii, Teguh on 25 Oct 2023, 15:10
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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 |
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Morning Shift Summary on 16.08.2023, posted by Teguh Citra Asmara, Eugenio Paris on 17 Aug 2023, 11:07
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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: |
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Morning Shift Summary on 15.08.2023, posted by Teguh Citra Asmara, Eugenio Paris on 17 Aug 2023, 11:00
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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 |
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Morning Shift Summary, posted by Ben, Justina on 06 Aug 2023, 15:55
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Achievements
Moved spectrometer to 1000 ln/mm and began alignment
Plan for next shift
Continue optimization of spectrometer with 1000 ln/mm grating
Problems |
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Morning Shift Summary, posted by Benjamin van Kuiken on 20 Oct 2023, 15:22
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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 |
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M3 vertical motors calibration - EulerMDL, posted by Antje Trapp on 02 Oct 2023, 21:48
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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) |
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Late shift summary20.04.2023, posted by Robert Carley on 21 Apr 2023, 04:05
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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 |