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. |
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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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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Shift summary, posted by Raphael de Wijn on 03 Nov 2024, 00:00
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X-ray delivery
12.5 keV, ~1.6 mJ
Achievements/Observations: |
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Shift summary, posted by Ulrike Boesenberg on 31 Oct 2024, 02:43
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12.389keV, HXRSS, 1-400+ bunches, 450uJ
Seeding alignment
Beamline alignment (Mirror + foccussing)
Measured energy and moved it the requested value
Cryos
for sample and monochromator are prepared
Aligned DES spectrometer
Started with DCCM characterization (440)
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SA1 status, posted by Peter Zalden on 28 Oct 2024, 09:58
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This is to report some findings during operation that should be looked into (mostly to avoid in the future, because both negatively affect data quality
of the user expt at FXE):
At the moment, the 99:1 mode affects 4 to 5 pulses out of 100 in SA1, see first screenshot that shows in the top right the IPM reading |
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Shift summary, posted by Chan Kim on 25 Oct 2024, 05:51
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X-ray delivery
12.4 keV, ~1.4 mJ
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Shift summary, posted by Chan Kim on 24 Oct 2024, 06:51
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X-ray delivery
12.4 keV, ~1.4 mJ
Achievements/Observations
Beam is through the inline mic
Flight tube vacuum optimized
Beam trajectory up to JF4M manually optimized
EHC |
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Status, posted by Naresh Kujala on 07 Oct 2024, 16:34
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Desy Laser group has fixed the issue about the laser Synchronization.
https://ttfinfo.desy.de/XFELelog/show.jsp?dir=/2024/41/07.10_M&pos=2024-10-07T14:51:12
Naresh |
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Issue, posted by Naresh Kujala on 07 Oct 2024, 15:15
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14:40hr
FXE and HED reported the laser synchronization issue. Informed to Machine RC.
LbSync team couldn't fixed this issue remotely and on there way to Schenefeld to fix this issue. |
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Shift summary, posted by Tokushi Sato on 01 Oct 2024, 02:39
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X-ray delivery
6 keV, ~2.8 mJ, continuous beam drift in both direction
Optical laser delivery |
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Shift summary, posted by Jörg Hallmann on 30 Sep 2024, 01:50
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01:49
Worked on the XPCS analysis packages |
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Shift summary, posted by Chan Kim on 30 Sep 2024, 01:13
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**X-ray delivery**
- 6 keV, ~2.8 mJ, continuous beam drift in vertical direction (both XTD2 & XTD9 XGMs)
**Optical laser delivery** |
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Stability Issue, posted by Chan Kim on 29 Sep 2024, 22:29
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X-ray beam is continuously drifting in the vertical direction (XTD9_XGM)
It affects our NKB focus and focused beam is also drifting continuously. |
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Status, posted by Jan Gruenert on 29 Sep 2024, 12:13
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Beam is back. Current status:
SASE1 (SPB/SFX)
2.72 mJ, 352 bunches/train, 6 keV
SASE2 (MID)
880 uJ,
1 bunch/train, 8 keV
SASE3 (SQS)
4.56 mJ, 1 bunch/train, 400 eV (3.1nm)
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Issue, posted by Jan Gruenert on 29 Sep 2024, 11:42
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A2 failure - downtime
The machine / RC informs (11h22) that there is an issue with the accelerator module A2 (first module in L1, right after
the injector).
This causes a downtime of the accelerator of 1 hour (from 10h51 to 11h51), affecting all photon beamlines. |
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Shift summary, posted by Chan Kim on 29 Sep 2024, 00:07
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**X-ray delivery**
- 6 keV, ~2.8 mJ, stable delivery
**Optical laser delivery** |
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Shift summary, posted by Jörg Hallmann on 28 Sep 2024, 23:42
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continued with the evaluation of the XPCS analysis packages
investigated the effect of alignment optimizations and forced misalignments on the contrast directly with the online XPCS tool
checked additional standard samples |
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Shift summary, posted by Jörg Hallmann on 28 Sep 2024, 01:31
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started with data acquisition for the ptycho experiment with different geometries
started with XPCS measurements of capillaries using the FSSS |
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Shift summary, posted by Chan Kim on 27 Sep 2024, 23:13
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X-ray delivery
6 keV, ~3.0 mJ, stable delivery
Optical laser delivery
ns laser for particle visualization
Achievements/Observations |