Issue, posted by Romain Letrun on 27 Feb 2024, 09:56 8x
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The status of the XTD2 attenuators has been checked during the experiment last week and many were found to cause disturbances in the wavefront ranging
from mild to severe.
Attachment 1: No attenuator |
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Shift summary, posted by Romain Letrun on 29 Feb 2024, 10:04
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X-ray delivery
10 keV, up to 160 pulses at 1.1MHz, 1.8 mJ
Optical laser
delivery |
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Shift summary, posted by Romain Letrun on 01 Mar 2024, 10:54
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X-ray delivery
10 keV, up to 128 pulses with custom bunch pattern, 1.6-2.0 mJ
Optical laser delivery
NA
Achievements/Observations |
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Shift summary, posted by Raphael de Wijn on 04 Mar 2024, 06:52
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X-ray delivery
10 keV, up to 128 pulses with custom bunch pattern, 1.6-2.0 mJ
Optical laser delivery
NA
Achievements/Observations |
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Issue, posted by Romain Letrun on 04 Mar 2024, 09:42
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The number of bunches during the last night shift kept being changed down to 24 by the device SA1_XTD2_WATCHDOG/MDL/ATT1_MONITOR020 acting on SA1_XTD2_BUNCHPATTERN/MDL/CONFIGURATOR.
This was not the case during the previous shifts, even though the pulse energy was comparable. Looking at the history of SA1_XTD2_WATCHDOG/MDL/ATT1_MONITOR020,
it looks like this device was started at 16:26:25 on Friday, 1st March. |
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Shift summary, posted by Marcin Sikorski on 05 Mar 2024, 07:41
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10 keV beam
Detector: JUNGFRAU in the burst mode (16 memory cells)
Achievements:
multiple sfx data sets (lysozyme)
with 4 and 8 pulses (at 1.1MHz) per exposure taken
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Status, posted by Romain Letrun on 13 Mar 2024, 10:09 7x
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We checked the XTD2 attenuators following the intervention from XRO (compar ewith elog:37, before the intervention).
The wavefront shows similar distortions with the 75 and 150 um as earlier, which is not too surprising since the cracks are vertical.
Attachments 1-5: Beam on SPB_XTD9_SCR with XTD2 attenuator CVDs |
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Shift summary, posted by Chan Kim on 13 Mar 2024, 23:41
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X-ray delivery
6 keV, 2.6 mJ/pulse, stable delivery
Optical laser delivery
800nm PP laser, stable delivery
Achievements/Observations |
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Shift summary, posted by Chan Kim on 15 Mar 2024, 00:16
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X-ray delivery
6 keV, 2.4 mJ/pulse, stable delivery
Optical laser delivery |
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Issue, posted by Romain Letrun on 15 Mar 2024, 07:08
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There are now two watchdogs for the XTD2 attenuator running at the same time
SA1_XTD2_WATCHDOG/MDL/ATT1_MONITOR020
SA1_XTD2_OPTICS_PROTECTION/MDL/ATT1
that are configured differently,
which results in different pulse limits (see attachment). |
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Shift summary, posted by Chan Kim on 15 Mar 2024, 23:43
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**X-ray delivery**
- 6 keV, 3.2 mJ/pulse, stable delivery
**Optical laser delivery** |
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Shift summary, posted by Raphael de Wijn on 21 Mar 2024, 06:33
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X-ray delivery
- 9.3 keV, >3 mJ/pulse, stable delivery
Optical laser delivery |
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Shift summary, posted by Raphael de Wijn on 22 Mar 2024, 06:35
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X-ray delivery
- 9.3 keV, >3 mJ/pulse, beam down around 30min
Optical laser delivery |
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Shift summary, posted by Chan Kim on 28 Mar 2024, 14:54
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X-ray delivery
12.72 keV, 10 Hz, NOT stable delivery, pointing drastically changed in the afternoon, presumably due to the train-on-demand operation
at SASE2
Optical laser delivery |
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Issue, posted by Chan Kim on 28 Mar 2024, 14:56
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| Pulse energy fluctuation observed after full train operation in SA2 starts. |
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Shift summary, posted by Chan Kim on 29 Mar 2024, 22:38
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X-ray delivery
- 12.72 keV, 10Hz, ~1.4 mJ/pulse, stable delivery
Optical laser delivery |
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Issue, posted by Romain Letrun on 30 Mar 2024, 06:59
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DOOCS panels are again incorrectly reporting the FXE shutter as opened when it is in fact closed. This had been fixed after it was last reported in February
(elog:24), but reappeared now. |
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Issue, posted by Chan Kim on 30 Mar 2024, 22:02
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Continuous pointing drift in horizontal direction.
It may trigger a vacuum spike at SPB OH (MKB_PSLIT section) at 21:07 pm.
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Shift summary, posted by Chan Kim on 30 Mar 2024, 22:50
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X-ray delivery
- 12.72 keV, 10Hz, ~1.4 mJ/pulse, continuous beam drift in the horizontal direction observed
Optical laser delivery |
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Shift end, posted by Adam Round on 31 Mar 2024, 23:20
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X-ray delivery
12.72 keV, 10Hz, ~1.4 mJ/pulse, some beam drift in the horizontal direction observed (probably mirror related)
Optical
laser delivery |