X-ray delivery

• 19 keV, ~0.9 mJ/pulse, stable delivery

Optical laser delivery

•  no

Achievements/Observations

• Finalized allignment
• Got successful runs with impact from sound eventhough often timing misaligned due to jitter

Issues

• High jitter from output of transducer (Ch 2in oscilloscope) is problematic

• stable delivery of 1mJ SASE at 18keV
• NAFO lens characterization with caustic scan
• successful detector calibration of AGIPD with LaB6 and alignment of Jungfrau to diffraction signal with LaB6
• test of ptychography with 18keV (not successful)
• successful setup of online holography analysis with test measurements

X-ray delivery

• 19 keV, ~0.9 mJ/pulse, stable delivery

Optical laser delivery

•  no

Achievements/Observations

• Tried many possibilities to fix the jitter issue. We covered everything we could think of, but in the end it was not possible as we could not avoid restricting ourselves from the 0.4s delay required for the ultrasound, making us then suffer from the inter-train jitter.
• Returned to operational experiment setup, eventhough suffering from the jitter issue.

Issues

• High jitter from output of transducer (Ch 2in oscilloscope) could not be solved.
• Turbopumps went off, then we realized multiple power sockets were powerless (F7,8,9,10,11). We connected the turbos to another socket to resume operation, after which the previous sockets were also fixed. We must reconnect the turbos to the typical sockets sometime soon, best expectation to be comming Monday.

• stable 18 keV SASE delivery
• measurement of siemens star in the morning
• alignment of phase plate for the nano focussing lenses
• testing and debugging of the pulse on demand macro
• holography test measurements and optimization of online analysis
• alignment of user samples

Problems:

• FSSS ScannerX had to be shutdown and initiated quite often
• We lost the output of the pp laser at 22:30. Laser OCD could solve the problem and the laser was back at 23:45.

• Stable delivery of SASE at 18 keV. The intensity dropped slightly from 1mJ to 0.88mJ during the evening, but everything good.
• fixed the laser pulse-on-demand + FSSS scanning macro
• We take some images series of the laser drilling process for different laser fluences
• We started to take first time resolved data

• stable SASE beam delivery with 1mJ pulse energy
• we took data for different optical laser excitation fluences and delays
• we changed from the optical lock to the electronic lock to measure also longer delays.

X-ray delivery

• 1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Aligned beam trajectory for 10.7 keV direct beam
• Optimized the microscopy table position and references
• Alingment of spectrometer and first and second crystal

Issues

• Intensity flucutations when SA3 changing number of pulses, it is related to automatic kicker adaptation.
• AGIPD preview update speed was slow

X-ray delivery

• 1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Aligned beam trajectory for 10.7 keV direct beam
• Installation of imaging optics

Issues

• Intensity flucutations when SA3 changing number of pulses, it is related to automatic kicker adaptation.
• AGIPD chiller was not working

X-ray delivery

• 1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Aligned beam trajectory for 10.7 keV direct beam
• Installation of imaging optics

Issues

• No major issue today.

X-ray delivery

• 1.3-1.7 mJ, 10.7 keV, 1-100 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Aligned beam trajectory for 10.7 keV direct beam
• Installation of imaging optics

Issues

• No major issue today

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 700-800 uJ
• stable delivery

Optical laser delivery

• None

Achievements/Observations

• More data collection with Jungfrau at the back of the CSS
• Crystal diffraction data from salicylic acid, ibuprofen and MOF collected with detector close up

Issues

• Clear aberations from our CRLs, so we operate with as few as possible
• Twice during data collection we lost connection to JF4M module 01 requiering reset of receivers.

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 900 uJ
• Beam pointing and stability issues towards end of shift

Optical laser delivery

• None

Achievements/Observations

• Crystal diffraction data from 4 different samples collected with detector close up two sample to detector position

Issues

• Jungrfau gain visualisation caused some concern - was confirmed with the hlp of DOC to be a known issue that the Medium and low gains are masked in that region leding to dark areas in corrected map
• sample collision with cone and OSA required realignment of the setup
• pointing stability of beam in the end of the day (BKR confirmed that the electron orbit is okay. So, we may need to contact PRC)

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 800 uJ
• Beam pointing and stability issues towards end of shift (again)

Optical laser delivery

• None

Achievements/Observations

• Crystal diffraction data from several samples collected with detector close up two sample to detector position

Issues

• The counts in the pupil has been dropping over the day and less than yesterday (one issue was a YAG screen in SPB_XTD9_IMGPI)
• pointing stability of beam in the end of the day (similar to yesterday)

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 800 uJ
• Beam pointing and corrected with M2 Ry piezo stepping optimizing scatering intensity seen on JF4M

Optical laser delivery

• None

Achievements/Observations

• Crystal diffraction data from user samples

Issues

• pointing stability was again an issue but adjusting with M2 Ry piezo stepping optimizing scattering intensity seen on JF4M enabled online correction

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.
Outline time schedule as sent around last week by Maurizio:

• 7:30-11:00: SASE3
• 11:00- end: SASE2
• 13:00-end: SASE1

During the today x-ray rampdown activities, XPD will work mainly from BKR (Jan, Naresh) and SCS hutch (Theo, Joakim).
Communication via zoom-room REMOTE1 or mobile phones.
Naresh is initially supporting Weilun / Gianluca for their study (SA1 and SA2) and will check both HIREXs.
Joakim will work in SA3 on PES + grating spectrometer with support by SCS or SQS colleagues, probably when XRO is finished with SA3 (after 11:00)
Jan will focus on the MCP detectors and imager in all SASE beamlines, in coordination with the XRO activities.

X-ray delivery

• 9.3 keV, 1-85 pulses, 1.3 mJ, stable delivery

Optical laser delivery

• 800 nm, 1-226 pulses, stable delivery except for shift change issues

Achievements/Observations

• PP laser alignment and optimization at IRU and PAM
• Aligned beam until IBS
• Checked MKB focus
• Timing at PAM
• First signals on GOTTHARD II

Issues

• Issues with shift change for PP laser. Intensity flucutation observed after shift change was done. This issue was similar to what was observed last year. We will inform LAS about this issue. No LAS OCD available to call before we leave after the shift (7:30 AM).

X-ray delivery

• 9.3 keV, 1-85 pulses, 1 mJ, stable delivery

Optical laser delivery

• 800 nm, 1-300 pulses, stable delivery

Achievements/Observations

• Optimization of ns laser for illumiation and PP laser polarization
• Optimization of X-ray beam alignment and scattering background on AGIPD
• Timing at IRU and PAM
• GOTTHARD II timing scan and data collection
• Pump-probe data collection at IRU

Issues

• No major issues

X-ray delivery

• 9.3 keV, 1-85 pulses, 1 mJ, stable delivery

Optical laser delivery

• 800 nm, 1-226 pulses, stable delivery
• ns laser for illumination

Achievements/Observations

• Successfull arrival time slope tests
• GOTTHARD II data collection
• Pump-probe data collection at IRU with arrival time slope

Issues

• No major issues