Issue, posted by Jan Gruenert on 23 Nov 2024, 10:27 
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SA1 Beckhoff issue
SA1 blocked to max. 2 bunches and SA3 limited to max 29 bunches
At 9h46, SA1 goes down to single bunch. PRC is called because SA3 (SCS) cannot get the required >300 bunches anymore. (at 9h36 SA3 was limited
to 29 bunches/train) |
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Issue, posted by Jan Gruenert on 23 Nov 2024, 15:11
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Damage on YAG screen of SA1_XTD2_IMGFEL
A damage spot was detected during the restart of SA1 beam operation at 14h30.
To confirm that it is not something in the beam itself or a damage on another component (graphite filter, attenuators, ...), the scintillator
is moved from YAG to another scintillator. |
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Issue, posted by Jan Gruenert on 24 Nov 2024, 13:47
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Beckhoff communication loss SA1-EPS
12h19: BKR informs PRC about a limitation to 30 bunches in total for the north branch.
The property "safety_CRL_SA1" is lmiting in MPS.
DOC and EEE-OCD and PRC work on the issue. |
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Issue, posted by Jan Gruenert on 24 Nov 2024, 14:09
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Beckhoff communication loss SA1-EPS (again)
14h00 Same issue as before, but now EEE cannot clear the problem anymore remotely.
An access is required immediately to repair the SA1-EPS loop to regain communication.
EEE-OCD and VAC-OCD are coming in for the access and repair. |
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Status, posted by Jan Gruenert on 24 Nov 2024, 17:23
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Status
All beamlines in operation.
The attachment ATT#1 shows the beam delivery of this afternoon, with the pulse energies on the left and the number of bunches on the right.
SA2 was not affected, SA1 was essentially without beam from 13h45 to 16h15 (2.5h) and SA3 didn't get enough (386) pulses in about the same period. |
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Status, posted by Jan Gruenert on 04 Dec 2024, 15:34
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| Beam delivery Status well after tuning finished (which went faster than anticipated). |
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Shift summary, posted by Jörg Hallmann on 03 Feb 2024, 23:51
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goals achieved:
alignment of the beam in tunnel and hutches including refinement of the beam in the center of rotation
check of cameras and optical components |
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Shift summary, posted by Wonhyuk Jo on 04 Feb 2024, 23:36
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Goal Achieved.
- Finished flat field measurement for AGIPD at different scenarios for upcoming user experiments.
- Aligned the spectrometer at DES and obtained the energy spectrum of 9 keV SASE. |
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Shift summary, posted by Jörg Hallmann on 05 Feb 2024, 23:10
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check of the optimized focussing options at 10 keV using only one arm in CRL2 - results still to be evaluated
successful check of the mirror chamber in the experiment hutch of MID - it was possible to reflect the direct beam down and use it under a shallow
angle on the sample position |
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Shift summary, posted by Jörg Hallmann on 29 Feb 2024, 02:41
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Stable seeding with 1mJ + 400mJ SASE
HIREX triggered interlock when all attenuators are removed
successful test of nano focusing setup |
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Shift summary, posted by Jörg Hallmann on 01 Mar 2024, 06:30
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Shift summary (Feb 29th):
Stable seeding with 1mJ + 400mJ SASE
Alignment of Split and Delay Line |
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Shift summary, posted by Jörg Hallmann on 25 Apr 2024, 01:50
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instrument alignment including NaFos, DES spectrometer, diamond detector, PUMA & test samples
seeding makes a good impression based on the DES spectrometer |
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Shift summary, posted by Jörg Hallmann on 27 Apr 2024, 02:11
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optimized the FEL energy on the absorption edge of Iridium
measurements on the SDW
of Chromium with max magnetic discharges of the PUMA at different attenuations
changed the sample from Chromium to user samples
issues:
energy scan not efficiently working
poor seeding quality in long FEL trains |
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Shift summary, posted by Ulrike Boesenberg on 13 May 2024, 08:48
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Weekend summary:
Overall stable beam delivery with 300bunches @18keV and 750uJ
-issue with XGM on Saturday night/morning |
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Shift summary, posted by Jörg Hallmann on 13 Jun 2024, 01:46
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alignment of the instrument including collimation and beam shaping
test of the tempus detector using standard samples with different rep rates, intensities & # of pulses
start commissioning of the PhotonArrivalMonitor (temporal & spatial overlap, white light spectrum) |
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Shift summary, posted by Jörg Hallmann on 14 Jun 2024, 01:53
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continue with Tempus tests
continue with PAM commissioning (first results of the working device at MID)
comments: |
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Shift summary, posted by Jörg Hallmann on 08 Aug 2024, 00:18
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optimization of seeding (still not as good as needed)
set position for the two color mode (difference 3-4 ev)
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Shift summary, posted by Jörg Hallmann on 09 Aug 2024, 01:59
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optimized the SDL alignment
found timing of the upper (-520 ps) and lower branch (-514.5 ps) of the SDL
moved the upper branch by 3 ps (positive) and lost the beam on the merger crystal - difficult to get it back |
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Shift summary, posted by Jörg Hallmann on 10 Aug 2024, 01:17
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Found the delay time from upper and lower branches of SDL with a frosted-YAG.
The upper branch is -512.8 and the lower branch is -513.28.
The delay time difference is about 500 fs. |
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Shift summary, posted by Wonhyuk Jo on 11 Aug 2024, 02:15
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Found the spatial overlap on the Suna microscope with Zyla.
Found the SDL motor position giving 200 fs time difference between the upper and lower branches.
The encoder and current values of DC2_CASZ and DC1_CASZ are not 100 % correlated. |