Shift summary, posted by Romain Letrun on 27 Sep 2023, 07:24
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Shift summary for 26.9.2023
X-ray delivery
6.3 keV, ~4 mJ, 1-352 pulses at 1.13 MHz
Great performance and stable delivery with few minor interruptions
Optical |
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Shift summary, posted by Peter Zalden on 24 Sep 2023, 09:24
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7:00 Power glitch during SPB operation - they were supposed to hand the beam back at 7:30h
Power glitch brought down FXE interlock system with beam stop monitor alarm that could not be reset
SA1 PPL running fine,
seems unaffected
9:10 Beam back in SA1, but still at 7 keV and cannot be changed by BKR to the req'd 5.8 keV, 94 kHz. |
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Shift summary, posted by Peter Zalden on 24 Sep 2023, 09:16
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Summary for sept., 23rd
6:55 SPB just handed the beam over to FXE when the power glitch killed the interlocks and brought down ACC
11:30 After a lot of communication with PRC, Wolfgang Clement and DOC, the beam is back in SA1. We request change to 5.5 keV |
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Status, posted by Jan Gruenert on 24 Sep 2023, 08:05
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8h05 Beam is switched back on in SASE2. HED ready for taking beam.
8h45 BKR is having problems to turn on SA2 beam. Not due to any
Beam actually went down in all beamlines today at 7:02 (for the records). |
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summary of 23.09, posted by Natalia, Justina, Giacomo, Sergey, Ben, Eugenio, Teguh on 24 Sep 2023, 07:49
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Around 6:55 there was a power glitch. Power in the experimental hutch and rack room went down in SASE3, error message in Xray interlock system and no
power for PP laser.
During morning TS turned the power on and interlock issues were solved by DESY. SCS could restart large part of SCS systems, however got help |
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Shift summary, posted by Raphael de Wijn on 24 Sep 2023, 07:28
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X-ray delivery
7 keV 202 pulses 1.6mJ stabel across train and throughout the shift
Beam down at 7am again, power glitch same as yesterday
Achievements/Observations
faster changover and alignment
YAG on nozzle worked
collected data the droplets in oil sample delivery method - |
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Attention, posted by Jan Gruenert on 24 Sep 2023, 07:19
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Again: power outage !
As yesterday, at around 7am, power was lost in Schendfeld at SASE3. No beam permission, accelerator in TLD mode.
SASE3 has no power, TS-OCD informed and on the way. BKR informs MKK to check cooling water pumps. |
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Shift summary, posted by Motoaki Nakatsutsumi on 23 Sep 2023, 23:31
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During the morning shift (7am - 3pm), we couldn't take any meaningful data due to the issue of power glitch which caused the beam permission error
(AIBS) and down of SASE2 Karabo / Online-GPFS due to the lack of cooling in the rack room.
During the late shift (3 pm - 11 pm), after these issues were solved thanks to PRC/DOC/ITDM/EEE at 5 pm..., we could get back in operation relatively |
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Issue, posted by Jan Gruenert on 23 Sep 2023, 15:35
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SASE2 :
The unavailability of karabo and possibly missing cooling water is a problem for the tunnel components as well.
XGM in XTD6 : server error since about 11am. We don't know about the status of this device anymore, neither from DOOCS or karabo. |
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Status, posted by Jan Gruenert on 23 Sep 2023, 14:49
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Update of power outage aftermath
Achieved by now / status
SASE1
beam delivery and FXE operating fine (beam back since about 11h30)
SASE3
SA3
getting beam since about 11h30, again difficulties / no beam between 12h30 - 13h34, currently ok.
SASE3 Optical PP laser issues since the morning. |
Issue, posted by Jan Gruenert on 23 Sep 2023, 08:50 
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Updates on power glitch
8h50 No feedback from TS-OCD (still not arrived at SASE3 / SCS ?). Phone is busy. Apparently they are busy working on it in the hall (confirmed
at 9h00). |
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Issue, posted by Peter Zalden on 23 Sep 2023, 08:14
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FXE interlock in fault state. See photo attached with original error message from 6:53h. It cannot be reset by acknowledging. BKR is informed and they
are contacting MPS OCD. |
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Shift summary, posted by Oliver Humphries on 23 Sep 2023, 07:59
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Shift summary from Monday 18th 7am until Saturday 7am
MONDAY
Aligned beamline until the beamstop. Macro for recovering mirror positions worked well. Minimal fine
tuning required.
Changed energy to 8.4 keV to align spectrometes on Ni kalpha emission.
Characterized focal spot of the x-rays at |
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Issue, posted by Jan Gruenert on 23 Sep 2023, 07:31
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7:23: RC info:
an electrical power glitch interrupted beam operation, machine down. DESY has power back
and accelerator is recovering beam towards TLD, but no beam possible into TLDs, apparently power issues in Schenefeld. |
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Shift end, posted by Adam Round on 23 Sep 2023, 07:04
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Staff:JK, RDW, AR
X-ray delivery
7 keV 202 pulses 1.7mJ stabel across train and throughout the shift
Optical laser delivery |
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Status, posted by Jan Gruenert on 22 Sep 2023, 17:46
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SASE3 gas supply alarm
SCS called the PRC at 17h04 due to a loud audible alarm in XHEXP1 and contacted also TS-OCD.
It turned out to be the gas supply system for SASE3, an electrical cabinet on the balcony level in the SE-corner of XHEXP1.
Actions taken by PRC: |
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Shift summary, posted by Raphael de Wijn on 22 Sep 2023, 07:27
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X-ray delivery
7 keV, 202 pulses, 564 kHz, ~1.3 mJ, stable delivery
Optical laser delivery
None
Achievements/Observations |
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Shift summary, posted by Benjamin van Kuiken on 22 Sep 2023, 06:51
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Achievemnets
Characterized the X-ray and laser danage on the STO2LNO2
Problems
Cound not find fine timeing from XAS measurements performed on the sample
MCP sees 266 nm PP laser
SiN mesaurement |
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SA1 status, posted by Jan Gruenert on 22 Sep 2023, 00:56
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As agreed beforehand, PRC and SPB/SFX re-assessed the SA1 EPS power limit based on actual performance, required number of pulses and rep rate, at the
agreed SPB photon energy of 7 keV.
The actual lasing performance is on average 1.3 mJ / pulse at the current 7 keV. |
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SA1 status, posted by Jan Gruenert on 21 Sep 2023, 09:24
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Info by R.Kammering (mail 20.9.23 18h25), related to the SA1 intensity drops during large wavelength scans:
"We found some problematic part in the code of our wavelength control server.
After lengthy debugging session we (Lars F, Olaf H. and me) did find a workaround which seems to have fixed the problem. |