Shift Summary SA2, posted by Silja Schmidtchen on 21 Jul 2023, 20:31
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Alignment to HED: https://in.xfel.eu/elog/XRO+Beam+Commissioning/205
SA2 - divergence with various M2 bender positions HED - https://in.xfel.eu/elog/XRO+Beam+Commissioning/200
SA2 - divergence with various M2 bender positions MID - https://in.xfel.eu/elog/XRO+Beam+Commissioning/196 |
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Shift Summary Feb 26th, posted by Felix Brausse on 27 Feb 2023, 02:10
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Moved out MONO, aligned SDL without MONO
Looked at both beams on DES
Struggled to get the same beam size with SDL inserted compared to direct beam (~8 um); fixed by adjusting slits |
Shift Summary Feb 25th, posted by Felix Brausse on 26 Feb 2023, 01:37 
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Aligned both branches of the split-and-delay line.
Brought the beam into the experimental hutch to image it on the x-ray eye; the
sample hexapod is not moving (again?); the values keep changing, but the device clearly does not move
PLEASE INVESTIGATE TOMORROW
Looked at the beam on the Zyla (Zyla is still in)
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Shift Summary 27_07_23 night, posted by Sergii, Manuel on 28 Jul 2023, 06:38
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Achievements:
1. Beam in sample chamber, almost overlapping with ALAS
2. We saw signal on MCP and diode2 |
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Shift Summary, posted by Benjamin, Robert, Yi-Ping, Ru-Pan on 30 Mar 2023, 04:16
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Achievements
Found coarse timing between XFEL and optical laser
Problems
Did not see a observe fine timing signal from silicon nitride measurement
Plan for night shift |
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Shift Summary, posted by Ben, Andreas on 06 Sep 2023, 23:33
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Achievements
Determined temporal overlap between the X-ray and laser
measured Ti L-edge XAS and RIXS on samples for Asamara beamtime
Problems
No problems
Plan for Next Shift |
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Shift Summary, posted by Benjamin van Kuiken on 21 Oct 2023, 15:34
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# Morning Shift Summary 21.10.23
Ben, Eugenio
Achievements |
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Shift Summary, posted by Diogo Filipe Monrroy Vilan e Melo on 25 Oct 2023, 06:02
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Staff: DM, CK, KK
X-ray delivery
7.8keV, 2.4mj, stable delivery, homogeneos intra train energy most of the time.
SASE 3 background
Optical |
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Sample Camera got stuck (likely at 11pm) and was only noticed at 5am, posted by Bjoern Senfftleben on 24 Nov 2023, 05:07
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After going in and reconnecting the camera, we observe att. 1.
According to logs the camera device server was restarted around 11pm, however the camera instance was never reinstantiated after the restart. |
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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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SPB beam alignment 1 keV 2 mrad, posted by Kelin Tasca on 20 Jul 2023, 18:17
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SCS Night Shift Summary, posted by Benjamin van Kuiken on 27 Sep 2023, 07:51
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Achievements
Characterized optical laser spot at sample
Problems
FEL beam had very unstable intensity and spectrum. As a result no useful data could be collected during the night
FEL pointing |
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SASE3 Summary of Maintenance Period and Ramp up activities, posted by Maurizio Vannoni on 30 Jan 2023, 15:21
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SASE3 Summary of Maintenance Period and Ramp up activities
Maintenance |
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SASE2 Summary of Maintenance Period and Ramp up activities, posted by Maurizio Vannoni on 30 Jan 2023, 19:06
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SASE2 Summary of Maintenance Period and Ramp up activities
Maintenance
- Many vibration tests were done. |
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SASE1 changing photon energy changes the 2-color setup in SASE3, posted by Thomas Baumann on 21 Feb 2023, 23:31
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We were set-up for 5.7 keV photon energy in SASE1. We made a test with BKR to change this energy to 9.3 keV. This had an effect on our two-color setup:
The first color pulse energy increased. See att 1. Green is the reference at 5.7 keV, blue is at 9.3 keV.
Att 2 shows the XGM history: pulse energy went up to 200 uJ in SQS XGMD during the change. |
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SASE1 Summary of Maintenance Period and Ramp up activities, posted by Maurizio Vannoni on 30 Jan 2023, 16:31
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SASE1 Summary of Maintenance Period and Ramp up activities
Maintenance
- MC2 library update was deployed by EEE and most of the motors were tested afterwards |
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SASE 3 background heavily impacts our focus, posted by Diogo Filipe Monrroy Vilan e Melo on 25 Oct 2023, 02:43
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Attch 1: We were having trouble focusing at IRU chamber. After multiple attempts the best we could achieve was 2.9-3.1 um beam.
Attch 2: We then wanted to test if this was caused by the SASE 3 background, after them changing from >350 pulses to 1, we saw an instant
improvement of ~0.5um down to 2.3 um beamsize. |
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SA3 status, posted by Andreas Koch on 08 Feb 2023, 11:14
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Bunch number control - SA3 FEL imager
As announced today in the XO meeting the SA3 FEL imager has a new feature, see screenshot, encircled:
- In case of danger for the YAG screen the bunches SA3 are set to "0" via the BunchPatternServer (SA3 Main scene). |
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SA3 status, posted by Frederik Wolff-Fabris on 12 May 2023, 16:12
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The SA3 EPS power limit at the Big brother was disabled to allow photon energy scans in SQS (due to Kr resonance at XGM, invalid power values are generated
and then beam is blocked);
Action was performed by Lars F. (RC), Michaela Petrich (PRC) and F. Wolff-Fabris (XO) with Accelerator RPO. |
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SA2 status, posted by Frederik Wolff-Fabris on 16 Feb 2023, 14:04
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Data for the Horizontal jitter at the HED Pop-In was observed during beam delivery on cw05 (03-05.Feb) and cw07 (14-16.Feb) (see attached pictures).
We have a similar base jitter in both periods of beam delivery to HED, ranging from a minimum of 50-60um to around 80-100um in both operational
weeks. |