Late shift summary20.04.2023, posted by Robert Carley on 21 Apr 2023, 04:05
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Activities:
correctly positioned magnet
moved detector upstream and found small beamstop
Recorded SAXS
Started tr-SAXS
Problems:
The SAXS images from laser-excited samples showed unexpected variation between different size rings, central point (ie not a ring) and |
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Shift summary, posted by Wonhyuk Jo on 21 Apr 2023, 02:10
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Shift Summary
Collected optical laser-induced dynamics in HfN and STO/SRO samples.
Jungfrau detector transferred data without data dropping issue.
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Shift summary, posted by Romain Letrun on 20 Apr 2023, 06:58
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X-ray delivery
12.0 keV, 1.3 mJ, 1-168 pulses @ 564 kHz.
Stable delivery.
Optical laser delivery
1030 nm compressed, THG.
Stable delivery.
Achievements/Observations |
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Shift summary, posted by Wonhyuk Jo on 20 Apr 2023, 02:26
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Achieved
Brought the 800 nm of optical pump laser to the hutch after the intervention.
Found the rough spatial and temporal overlap
between the X-ray and pump laser with MID X-ray eye.
Found the sufficient photo-induced effect on the user sample (HfN) with one unpumped |
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shift summary day 2 UP3463, posted by Laurent Mercadier, Martin Teichmann on 19 Apr 2023, 23:20
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Achievements
found larger beamstop
found center of pinhole and bender settings for beam size
checked jitter of beam on grating,
looks like jittering is large, to be further investigated offline
checked that patterns are working for the night, to be continued by night |
Issue, posted by Laurent Mercadier on 19 Apr 2023, 17:51 
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We report on an issue regarding the bunch pattern: The bunch pattern read by SCS_RR_UTC/MDL/BUNCH_DECODER shows 48 pulses, but we instead use 50 pulses.
Currently, we have a separate RF window and our 1st pulse Id is 2604. We operate at 2.2 MHz, and as required, 50 pulses. See attachment 1.
This means that the last two pulse Ids are 2700 and 2702. However, these values exceed the number of pulses allowed, and the way the bunch pattern |
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Shift summary, posted by Romain Letrun on 19 Apr 2023, 07:04
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X-ray delivery
12.0 keV, 1.3 mJ, 1-168 pulses @ 564 kHz
Decaying intensity between 1:20 and 2:40, otherwise stable delivery.
Optical
laser delivery |
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Shift summary , posted by Wonhyuk Jo on 19 Apr 2023, 02:14
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Achieved
Brought the X-ray to the end of the beamline.
Aligned the goneometer with a pin.
Found the timing of
AGIPD at the detector distance of about 3.4 m from the sample.
Found the timing of Jungfrau detector in burst mode.
Measured the |
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summary late shift day 1, posted by Laurent Mercadier, Martin Teichmann on 18 Apr 2023, 23:01
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Achievements
knife edge scans of FEL beam, 30 um x 30 um beam size
aligned beam stop in front of camera
triggering pattern tested
and works, still need to test with laser and XGM
Problems |
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shift summary EulerMDL calibration, posted by Antje Trapp on 16 Apr 2023, 23:06 11x
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First four pictures: beam line status at beginning of shift - Beam aligned to MID
Idea is to check M2 parasitic motions again on M3 popin. therefore bringing M2 close to 0 with all vertical motors and Tx as much as possible
without using beam on the popin. |
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Shift summary, posted by Silja Schmidtchen on 16 Apr 2023, 15:35
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shift summary from Saturday 15.04.2023:
Tasks:
- Calibration of Euler MDL |
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Shift summary, posted by Maurizio Vannoni on 16 Apr 2023, 07:00
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Update of the damage tests at SQS.
Yesterday (15.04) SQS staff created a focused beam on our sample using a small YAG fragment we have placed on the holder.
Due to the unusual position, the beam is full of aberrations but it looked small enough for our purpose. Estimattion of the size is difficult |
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Shift end, posted by Jan Gruenert on 13 Apr 2023, 15:57
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End of Diamond Sensor Study
We leave the SASE2 beamline in the following safe state:
Pre-Abs inserted
Solid ATT with T=0.001
All CRLs OUT
All imagers OUT
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Issue, posted by Andreas Koch on 13 Apr 2023, 15:29
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Trigger issue with SXP_XTD10_IMGES - Exit Slit imager
The external trigger of the Navitar camera was not set, fixed now.
The single pulse trigger of the imager: MCP + camera is tested and correctly working. |
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Issue, posted by Jan Gruenert on 10 Apr 2023, 02:25
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REPAIRED / FIXED
Problem: The imager SPB_XTD9_IMGPII45 insertion motor lost steps and kept the machine to maximum 2 bunches per train.
Mitigation by DOC/EEE/PRC on 8 April 2023: made sure that screen seems actually out of beam and took imager out of interlock |
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SPB_XTD9_IMGPII45 lost steps - REPAIRED, posted by Jan Gruenert on 10 Apr 2023, 02:16
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REPAIRED / FIXED
Problem: The imager SPB_XTD9_IMGPII45 insertion motor lost steps and kept the machine to maximum 2 bunches per train.
Mitigation by DOC/EEE/PRC on 8 April 2023: made sure that screen seems actually out of beam and took imager out of interlock |
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Shift summary HED 2022-0, posted by Motoaki Nakatsutsumi on 09 Apr 2023, 00:03
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9.752 keV, self-seeding, 700-800 uJ. Intensity is very stable, ponting is also much stable than usual. very good beam.
Beamtime #3326 - Axion search.
Successfully aligned two Ge crystals to Laue conditions (Rocking curve width ~0.002 deg) . Found Laue reflections after 2 crystals on Jungfrau |
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Issue, posted by Yifeng Jiang on 08 Apr 2023, 23:44
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| We notice that 0.5 mm Silicon ATT in SASE1 causes holo beam profile in FEL imager. Maybe this silicon att has been damaged. |
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Shift summary, posted by Johan Bielecki on 08 Apr 2023, 22:52
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Beam delivery for proposal 3378
Achievements/Observations
Collected large amounts of data for the user program on water crystallisation and angular correlations
To do for next |
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Issue, posted by Andreas Galler on 08 Apr 2023, 10:29
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Changed EPS Interlock condition for SPB_XTD9_IMGPI/SWITCH/SCREEN_OUT
SPB/SFX called DOC this morning for being limitied to two pulses by the EPS (Instrument should have called PRC instead)
After tracing the issue to the SPB_XTD9_IMGPI/SWITCH/SCREEN_OUT switch SPB/SFX decided to take this imager out of the interlock, confirming |