Issue, posted by Peter Zalden on 20 Sep 2023, 19:42
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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. |
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Shift end, posted by Jayanath Koliyadu on 20 Sep 2023, 02:09
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X-ray delivery
7 keV, 2.1 mJ, stable delivery
Optical laser delivery
None
Achievements/Observations |
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SA1 status, posted by Jan Gruenert on 19 Sep 2023, 18:58
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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 
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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 |
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Issue, posted by Chan Kim on 15 Sep 2023, 14:54
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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. |
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Shift summary, posted by Tokushi Sato on 14 Sep 2023, 23:03
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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 |
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Summary: Night 13th and Day 14th, posted by Thomas Baumann on 14 Sep 2023, 16:49
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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%. |
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Shift summary, posted by Tokushi Sato on 14 Sep 2023, 00:05
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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 |
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Shift summary, posted by Tokushi Sato on 13 Sep 2023, 02:18
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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 |
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Status, posted by Naresh Kujala on 09 Sep 2023, 15:03
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Info from Machine RC (Lars):
----------------------------------------------------------------------------------------------------------------------------------------
Author: Froehlich |
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Status, posted by Naresh Kujala on 09 Sep 2023, 11:36
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- 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. |
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Status, posted by Naresh Kujala on 09 Sep 2023, 07:54
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Info from MRC (Lars)
-----------------------------------------------------------------------------
The cryo crew reports that the cold compressor that failed is, alas!, |
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Shift summary, posted by Erik Brambrink on 09 Sep 2023, 07:00
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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)
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Shift summary, posted by Erik Brambrink on 08 Sep 2023, 06:22
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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.
|
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Shift summary, posted by Andreas Scherz on 07 Sep 2023, 23:46
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Shift summary 07.09.2023
Achievements:
1. found t0 on LSCO x=0.15 at pre-peak O K edge |
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Shift summary, September 7 after nightshift, posted by Justine Schlappa, Guiseppe Mercurio on 07 Sep 2023, 07:24
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Achievements:
- Optimized hRIXS settings for OK edge at 145 deg scattering angle, resolution of about 50 meV
- Transferred the user sample |
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Shift Summary, posted by Ben, Andreas on 06 Sep 2023, 23:33
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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 |
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Giuseppe, Justine, posted by Giuseppe Mercurio on 06 Sep 2023, 06:35
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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 |
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Shift summary, posted by Oliver Humphries on 05 Sep 2023, 22:33
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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 |
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Shift summary, posted by Wonhyuk Jo on 29 Aug 2023, 03:14
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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. |