Night shift summary
Andreas, Giuseppe

• we finished to measure sample 17 and 41 in CARD 06_Y2018F04
• we transferred sample Card_07_Y2018F19
• we started measuring sample 500 nm Ti #26

Problems:

• the frame could not be grabbed properly from the transfer arm, so we decide to vent and transfer manually
• we realized that FEL beam drifted horizontally, we corrected by moving M2 pitch. (The beam did not move at XGM in XTD10, so it must have been some mirror movement)

X-ray delivery

• 1-350 at 12.45 keV, 1750 uJ. Stable delivery

Optical laser delivery

Achievements/Observations

• completed Uwe and Petra data.
• the jet is almost established for <mixing experiments

Issues

X-ray delivery

• 1-350 at 12.45 keV, 1700 uJ. Stable delivery

Optical laser delivery

• None

Achievements/Observations

• collected about over 15 hours of quality data from different samples (thanks to FXE) with extremely stable jet.

Issues

• Issue with data processing in the morning and from the day before due to DAQ; only half of the detector data were calibrated; this was solved by switching to the old DAQ

X-ray delivery

• 1-350 at 12.45 keV, 1700 uJ. Stable delivery

Optical laser delivery

• None

Achievements/Observations

• fixing many issues with the cube and helium leaks
• collected many quality diffraction data for both jet with and without samples
• data on Nendu mutant (~2.5 hours of data collection) with two different conditions

Issues

• AGIPD data aggregator stopped responding and it took about 1 h to be fixed by DOC, which interrupted the data collection

• some strange streak diffraction appears on JF4M and this has to be removed by scanning X- and Y- nozzle motors carefully

Late shift 07.02.24
Laurent, Martin

Continued with laser preparation

• optimized SHG
• changed lens to f = 600 mm
• knife edge scans
• found optimum lens position (95 mm) for w0 = 70 um
• fluence characterization --> up to more than 2 J /cm^2
• Coarse timing
• Fine timing

night shift summary 07.02.24

Andreas, Giuseppe

program was to determine horizontal an vertical beam size and then create some single laser shot patterns to determine fluence settings for LIPSS.

PROBLEMS:

• knife edge insensitive to beam sizes smaller than 20um due the large beam jitter of the FEL.
• moved to the camera and curved gratings but then encountered vacuum issue with scroll pump down since noon 07.02. fixed by replacing scroll pump.
• useful camera data could not extracted as we cannot control the TPI shutter and have multiple exposures of the camera. STPulser Macro need to be fixed.
• SCS_XTD10_TPI/DCTRL/SHUTTER in the SCS topic is not found after shutting device down when tracking down device issues.

check of the optimized focussing options at 10 keV using only one arm in CRL2 - results still to be evaluated
successful check of the mirror chamber in the experiment hutch of MID - it was possible to reflect the direct beam down and use it under a shallow angle on the sample position

Goal Achieved.
- Finished flat field measurement for AGIPD at different scenarios for upcoming user experiments. 
- Aligned the spectrometer at DES and obtained the energy spectrum of 9 keV SASE.
- In order to investigate the sample to detector distance of AGIPD, we collected SAXS patterns from three different type of SiO2 NPs at different sample positions.
- Finished preparations for tomorrow.
 

goals achieved:
alignment of the beam in tunnel and hutches including refinement of the beam in the center of rotation 
check of cameras and optical components
initial check of the mirror chamber (successfully)

issues:
smarACT motors in the DES tricky - some are in error state and the filter wheel is moving and does not stop - positioned it and removed afterwards the cable - EEE intervention next week necessary
camera of Pop-in imager II45-2 in XTD6 went into error - DOC solved the issue

X-ray delivery

• 1-64 pulses at 10 keV, ~1.1 mJ.
• Overall stable delivery.

Optical laser delivery

• NA

Achievements/Observations

• Measured flat fields for JUNGFRAU for all configurations. Detector program completed.

Issues

• Mishap of lit frame finder with custom bunch patter.
• Apparent issue to process JUNGFRAU darks caused by lack of disk space. Solved by DOC/CAL.
• Ghost run in myMdC upsetting the run controller. Solved by DOC and cause under further investigation.

beam parametes: 8.5-9 kev, 1.2 mJ, 1-2 pulses

• HED trajectory established from XRO setpoint, shape and transmission optimized
• monochromator aligned
• 5 sets of CRLs including nano-focus aligned
• ZZ yesterday morning to fix cameras, connect motors..
• DAQ rolled back to legacy version, works fine
• instrument spectrometers aligned and calibrated
• We perform some longer scans with monochromated beam imaging on wires / Siemens star
• Work on shimadzu timing
• Debugging new JNGFR_DARK_CHAR middle layer with controls - done

X-ray delivery

• 1-352 pulses at 10 keV, 1200 - 400 uJ.
• Significant pulse energy slope within the train. Action on the kickers was eventually performed leading to some reduction of the slope, though remaining still far from ideal. Decision to take the action took a very long time (2.5 hours).
• Several beam delivery interruptions through the afternoon due to trips of A16 before is was taken off beam.
• At 21:29:20, the number of bunches in SASE1 was changed from 1 to 352 without intervention of the SPB/SFX shift crew resulting in the destruction of a sample (see elog:7).

Optical laser delivery

• 800 nm, 50 fs, 1-113 pulses at 564 kHz.
• Brief intensity and spectral fluctuations as already observed in the past with non-optimal AMPHOS regulation. Detail will be communicated to LAS.

Achievements/Observations

• Measured flat fields for AGIPD for all remaining configurations.
• Confirmed timing of JUNGFRAU.
• Established pump-probe timing at IRDa.

Issues

• Several issues with AGIPD controls: timeout when trying to stop sending data, two hemispheres in different states, etc. Experts informed.
• Destruction of the sample following number of pulses incident in the evening caused a considerable loss of time to replace the sample and resume operation.
• XTD2 500 um Si is damaged (leftover from last run).

At 21:29:20 today, the number of bunches in SASE1 was increased from 1 to 352 without intervention of the SPB/SFX shift crew. 30 seconds later, the number of bunches was reduced to 1, again without intervention from the SPB/SFX shift crew (see attachments 1 and 2).

We were in the middle of a measurement at that time and the sudden increase from 10 mW to 3.5 W average power resulted in the destruction of the sample we were using.

AGIPD and JUNGFRAU are safe and were not at risk at the time of the incident, but this is merely by luck.

The origin of the change in number of bunches is unclear to us and needs to be investigated. It goes without saying that this is extremely dangerous for equipment and the damages could have been even worse.

Moning shift summary (31.01 and 01.02)

Acievements:
- SRA recalibrated, cross position on FEL imager found
- VSLIT in SA3 check calibration
- LEPM angle changed for LRGR. Calibration of photon energy server done with help of Ne in GATT.
- Several configurations for SCS have been adjusted/established
 

31.01.2024 (Day shift)

X-ray delivery

• 10 keV
• 1200 - 400 uJ (significant pulse energy slope within train)

Optical laser delivery

• None

Achievements/Observations

• Flat fields and timing scans were measured for AGIPD (1.1MHz, normal CDS mode)

Issues

• Interlocks issue causing beam to be interrupted when the beamline shutter was open https://mylog.connect.xfel.eu/#narrow/stream/111-SPB_900429_RichardBean/topic/Issues/near/32289
• Opening EXP hutch gate valves resulted in vacuum issue https://mylog.connect.xfel.eu/#narrow/stream/111-SPB_900429_RichardBean/topic/Alignment/near/32195
• Pulse pattern decoder recorded empty arrays, even though data were visible in Karaboo https://mylog.connect.xfel.eu/#narrow/stream/111-SPB_900429_RichardBean/topic/Issues/near/32299
• AGIPD timing issue caused by the wrong Trigger Source https://mylog.connect.xfel.eu/#narrow/stream/111-SPB_900429_RichardBean/topic/Detector.20Status/near/32408

To do for next shift

• Continue with the detector program

A ZZ is taking place today, 31.01 at 11:30, in XTD9 to verify and fix the M3 Pop-in screen which is currently blocking the beam. It is not yet clear if this is an electrical or mechnical problem.  

** Update 13:05: ZZ intervention is finished and successful. A mechanical issue due to a loose coupling between motor and spindle was fixed. Machine is running again and SPB/SFX can use the beam.

SASE3
Open Issues:
- currently it is not possible to change the number of pulses because of Instruments beam permission interlock
Done:
- VSLIT was calibrated with diffraction fringes (it was off by 41 microns, the bottomo blade encoder was recalibrated to compensate this error)
https://in.xfel.eu/elog/XRO+Beam+Commissioning/319
- various setting points were checked at 20 mrad using mirror switch, no particular problems found
https://in.xfel.eu/elog/XRO+Beam+Commissioning/310
https://in.xfel.eu/elog/XRO+Beam+Commissioning/306
- ESLITS width was measured using diffracted beam. No Calibration was applied, we will discuss with instruments if this is needed/wished
https://in.xfel.eu/elog/XRO+Beam+Commissioning/323
https://in.xfel.eu/elog/XRO+Beam+Commissioning/324
https://in.xfel.eu/elog/XRO+Beam+Commissioning/325
- ATTENTION: SQS ans SXP ESLITS motors are now moving in the opposite direction as before (please look at the updated picture on the scene). Software limit switches are real limits: do not deactivate them
SCS ESLIT was already in this way: now all the ESLITs are configured similarly (no Elmo controllers anymore)
- SRA calibration was recalibrated
https://in.xfel.eu/elog/XRO+Beam+Commissioning/313
- FEL imager cross adjusted to GATT
https://in.xfel.eu/elog/XRO+Beam+Commissioning/307

SASE2
Open Issues
- HED Mono1 still not going through until HED popin. Paralleism of crystals achieved. Transmission is ok until Beam Monitor but not further.
Beam height was checked but the problem remained
Done:
- M3 mirror realigned, Euler motion roughly calibrated. 
ATTENTION: Old saved values are no longer usable. "XRO setpoints" must be used as a starting point for further alignment
- Positions C and E were saved
- The fast flipping positions were almost found, see here: https://in.xfel.eu/elog/XRO+Beam+Commissioning/322
Unfortunately, beam was suddenly off and the procedure was not complete
- No particular problems found

SASE1
- FXE and SPB trajectory rechecked, no particular problems found

ATTENTION:
- M1 & M2 motors were found with wrong scaling factors (since some times). They are corrected while maintaining the mirror positions. (Most affected was M1 vertical motors which is rarely used).  
- saved positions are using the "fast flipping option" meaning that you can switch between the two only using M2 RY
https://in.xfel.eu/elog/XRO+Beam+Commissioning/283
https://in.xfel.eu/elog/XRO+Beam+Commissioning/282
- CRL1 motor calibrations were lost, and restored from 6th Dec. In case if there are further issues, contact Control. 

X-ray delivery

• 0.25nC, 14 GeV, rep rate 2.25 MHz, 9300 eV, 1 to 100 pulses, ~2000 uJ
• M1 and M2 mirrors are aligned and beam trajectory to SPB.

Goal

• Commissioning of the Gotthard-II 25um MHz detector on SA1-HIREX.

Achievements

• Aligned the HIREX using bent diamond crystal C110 and no gratings used.
• 2D camera(Bragg/photonic science) aligned and spectral data is collected.
• Trigger delay scan of Gotthard-II detector. The best trigger delay setting was found at 1952637.
• Calibration Pipeline is established and can load/inject the constants
• Online preview of Gotthard-II corrected data is successfully tested and commissioned.
• successfully able to load calibration constants and dark runs in myMDC.
• Successfully able to start the calibrated data after completion of runs in myMDC.
• Calibration/corrected and dark data reports are successfully generated in the proposals
• New filter stage commissioned and tested. Updated the positions in the MDL.
• Intensity scan output for strips 2150 and 2151, obtained varying the SA1 diamond attenuators. I_0 is calculated integrating the output from strip 2000 to strip 2300.
• Different gain setting data was collected.
• Gotthard-II tested and commissioned with different rep. rate: 4.5 MHz, 2.25 MHz, 1.125 MHz, 0.5 MHz. The test was sucessfull and we can record spectrum for different rep. rate.
• There are no visible aritfacts around the gain switching region, and the correction seems to work well.
• spectral data is collected with 2.25 MHz with pulses 2, 30 and 100.
• Attachment 1: Fisrt results from Gotthard-II with spectral data in MHz rep rate.

Issues:

• Calibration pipeline of pulses/train (ASSEMBLE_STREAK) couldn't able to instance. DRC and OCD DA group helped to fix (Thank you)
• Adhoc data sources were added in SA1 COMM with support from DRC and CTRL (Thank you)
• beam lost at ~12:30hr today due magnets issues and till now no beam. Unable to continue the rest of the program planned for commissioned of the Gotthard-II.

Thanks to Marco, Jiaghuo, DRC(Monica), CTRL OCD (Andrea), DA OCD (Karim) for there support and help.

RC / BKR informs : Beam is down (since 12h10), all beamlines affected

The reason is failure of a quadrupole (power supply) downstream of the dogleg.
The MPS crew is working on recovery, access to XTL ongoing.
RC will inform when new estimates come in on when we can restart beam operation.

Currently affected on Photon side:
- SA1: Naresh (XPD) and Marco (DET) working on Gotthard-II commissioning. Naresh is present at BKR.
- SA2/SA3: Antje + Mikako (XRO) working on SA2 mirror flipping tests and SA3 exit slit check. Both are located at SXP control hutch.
Other XRO members will come in for the afternoon/evening shift work. Antje will inform them via chat.