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 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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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 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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Status, posted by Naresh Kujala on 01 Mar 2024, 17:11
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-Machine status
the cold compressor failure occurred at ~16.30hr today. And it will take around 35 hr to fix it. I will update via email (local contacts for
experiments) and Operation Elog tomorrow with more details. |
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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 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 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 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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SA1 status, posted by Peter Zalden on 28 Feb 2024, 08:57
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5.61 keV setpoint in SA1 was confirmed to correspond to 5.660 keV (+/- 0.003 keV), see attached.
The user expt #5644 can proceed as planned. |
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Issue, posted by Peter Zalden on 28 Feb 2024, 06:57
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Not sure if this is the cause of the fringes reported before, but at 5.6 keV there are clear cracks visible on the XTD2 Attenuators 75 umm and 150um
CVD, see attached. There is also a little bit of damage on the 600 um CVD, but not as strong as the others.
At 5.6 keV we will need to use the thin attenuators. I will mention again in case this causes problems downstream. |
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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 Motoaki Nakatsutsumi on 26 Feb 2024, 14:32
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Shift summary for 2024-02-25 from 11:00 to 2024-02-25 at 14:00:
Self-seeding at 8.5 keV, with approximately 500 μJ per pulse.
Overall, the performance of x-ray self-seeding remains good, and users are happy. Pointing stability is also exceptional. However, enhancing |
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Shift summary, posted by Tokushi Sato on 25 Feb 2024, 22:54
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X-ray delivery
9.10 keV; 190 pulses per train @1.1 MHz with roughly 170-200 uJ; stable delivery
Optical laser delivery
ns laser for particles visualization
Achievements/Observations |
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Shift summary, posted by Motoaki Nakatsutsumi on 25 Feb 2024, 14:47
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Shift summary for 2024-02-24 from 07:00 to 2024-02-25 at 14:00:
Self-seeding at 8.5 keV, with approximately 500 μJ per pulse. Following re-tuning around 10 am on the 25th, the energy per pulse increased
to around 600 μJ. |
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Shift summary, posted by Johan Bielecki on 25 Feb 2024, 00:11
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X-ray delivery
9.10 keV; 190 pulses per train @1.1 MHz with roughly 140-200 uJ; observed some fluctuation in the photon flux
Optical laser delivery |
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Shift summary, posted by Motoaki Nakatsutsumi on 24 Feb 2024, 11:58
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Shift summary 2024-02-23 07:00 - 2024-02-24 10:00
We got self-seeding at 8.5 keV very quickly after changeover from 10.5 keV operation finished at 2024-02-23 07:00.
Pulse energy ~ 600 uJ. |
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Shift summary, posted by Tokushi Sato on 23 Feb 2024, 23:03
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X-ray delivery:
stable and flat over 190 pulses per train. 1.1 MHz with ~200 uJ
Optical laser delivery: |
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Shift summary, posted by Tokushi Sato on 22 Feb 2024, 22:52
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X-ray delivery: stable and flat over 190 pulses per train. 1.1 MHz with 200 uJ short intervention needed to improve intensity after it dropped
Optical laser delivery: NA
Achievements/Observations: |
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Shift summary, posted by Peter Zalden on 22 Feb 2024, 06:13
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Beam conditions:
Used photon energies between 6 and 7 keV, including short undulator scans
Continuously got 1 mJ despite the short pulse mode
that's running
Bandwidth was found to be 18 eV FWHM at 6.07 keV (0.3%) by monochromator scan against fixed undulator setpoint
Achievements: |