Shift summary of SASE1 alignment, posted by Kelin Tasca on 20 Jul 2023, 20:21
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Beam aligned to SPB Pop-In https://in.xfel.eu/elog/XRO+Beam+Commissioning/185
Beam aligned to FXE Pop-In https://in.xfel.eu/elog/XRO+Beam+Commissioning/187
Vibration tests: https://in.xfel.eu/elog/XRO+Beam+Commissioning/188 |
FXE beam alignment 9 keV 2 mrad, posted by Kelin Tasca on 20 Jul 2023, 18:23 
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Shift summary of SASE2 alignment, posted by Antje Trapp on 20 Jul 2023, 18:20
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Mirror pitch motors Ry were tested after scaling was changed to um.
Tx and Ry motor positions were calibrated to their measured physical positions.
ALL PREVIOUSLY SAVED SETTINGS FOR SASE2 MIRRORS ARE OBSOLETE! |
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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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Shift summary: 19. July, posted by Mikako Makita on 19 Jul 2023, 20:09 8x
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Summary of today's activity:
Beam handover ~ 3pm.
SA2 mirror set tp B4C.
SA2 Rough alignment to MID & HED @ ~ 2-2.5 mrad ==> img 1, 4,
5 & 6
SA2 HED-Preabsorber position check with x-ray (working) ==> img 2 &3
SA3 M6 mirror Switch check (seems to be working)
SA1 |
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ALL RY MOTORS ARE IN MICROMETER SCALING, posted by Antje Trapp on 19 Jul 2023, 12:34
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This has several implications:
- ALL PREVIOUSLY SAVED RY POSITIONS ARE OBSOLETE!
- Ry values seem to have changed by a factor of 1000 |
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New screens installed in FEL imager SA3, posted by Andreas Koch on 21 Jun 2023, 15:12
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YAG screen
The damaged screen "YAG2" with Al coating had marks and had been exchanged.
The Imager Watchdog now protects the screen - operational for some months i.e. the number of bunches is shut down to zero if the intensity at the |
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Shift start, posted by Jan Gruenert on 19 Jun 2023, 09:37
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Rampdown day activities
The main focus is as usual on checking all tunnel components and to identify any potential
issues that could be fixed during the maintenance period which will be starting this wednesday. |
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Shift summary, posted by Konopkova Zuzana on 19 Jun 2023, 05:34
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concluded user experiment on dynamically compressed water
long train operation worked relatively stable with no major interuptions
in beam delivery
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Shift end, posted by Adam Round on 18 Jun 2023, 07:31
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posting for 17th June
Staff: AR, AS, FK, HH, JB, KK, DZ, MK
X-ray delivery |
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Strange pulse behavior upstream XGM, posted by Faisal Hammad Mekky Koua on 17 Jun 2023, 07:41
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- Pulse intensity decreases drastically at XTD2 across the train
- the visualisation of our beam therfore needs to be compensated adjusting transmission
- beam shape and uniformity is different than previous days and it is unclear how much of this is related to real changes in the beam or an effect |
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Shift summary, posted by Konopkova Zuzana on 17 Jun 2023, 07:27
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Beam 18 keV, 0.5 MHz, long trains up to ~280 pulses
change setup to dynamic DAC
prep for user beamtime: alignment of X-rays, focusing (~40 um), train-on-demand for long trains,
transmission runs
darks, XRD calibrations for AGIPD
Issues: |
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Status, posted by Abhisakh Sarma on 16 Jun 2023, 11:42
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Beam is back at around 11:30 pm
We lost 1 hr 30 min of beam time.(it was promised to get back at around 10:00 am)
If we want to change the pulse number then we need to call BKR. |
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Issue, posted by Michaela Petrich on 16 Jun 2023, 06:28
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staus of JUN16, 11:30
SA1 and SA3 have been adjusted to acceptable conditions to be compatible with simultaneus operation at SA2
tuning on SA2 is ongoing |
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Shift summary, posted by Johan Bielecki on 15 Jun 2023, 23:08
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X-ray delivery
12.42 keV, stable delivery in single pulse mode with 1.9 mJ/pulse
Optical laser delivery
532 nm ns-laser for sample pumping
Achievements/Observations |
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Shift summary, posted by Konopkova Zuzana on 15 Jun 2023, 06:41
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18 keV, 150 uJ per pulse, 2.2 MHz
continuing user program proposal 3285
X-ray heating and laser heating samples in DACs
using only the first 200
pulses of the train as the intensity after decreases fast, conversion of the samples is difficult due to low pulse energies
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Shift summary, posted by Konopkova Zuzana on 13 Jun 2023, 23:08
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beam: 18 keV, 352 pulses, ~200 uJ per pulse
achievements:
AGIPD timing scans, AGIPD darks.
beam alignment, CRL3 focusing, prep for the user beamtime
beam conditions: |
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Vacuum Leak in SA2-XTD1 Solid Attenuator - [SOLVED] - Closing report , posted by Raśl Villanueva-Guerrero on 13 Jun 2023, 11:23
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Dear all,
the closing report on this issue can be found in the following Alfresco link:
https://docs.xfel.eu/share/s/GzxORQOGToe_tiug7LIHhQ |
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Taking the beam , posted by Abhisakh Sarma on 13 Jun 2023, 06:49
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BKR changed the beam energy from 15 keV to 12.4 keV
Energy 12.4 keV
Repeatation rate 1.1 MHz |
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Shift summary, posted by Chan Kim on 12 Jun 2023, 07:16
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X-ray delivery
12.42 keV, stable delivery with slightly less than 1.0 mJ/pulse (~0.95 mJ/pulse)
Optical laser delivery
none
Achievements/Observations |