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

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

Optical laser delivery

• None

Achievements/Observations

• Installation of imaging optics and alignment

Issues

• No major issue today

Staff: AR, MS, DM, RL, RdW

X-ray delivery

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

Optical laser delivery

• None

Achievements/Observations

• Beam aligned down to zyla cam 3
• CRLs were inserted but created too much speckles on Jungfrau and we couldn't reach the expected 80 um beam size for the users lenses (arms 6 and 7 unusable, arm 4 hole feature in beam)
• user lenses aligned
• User beamstop installed to block 1st order line in horizontal direction
• Collected several speckle tracking data scans without our CRLs - to give initial estimates for focus
• Jungfrau timing confirmed - signal observed

Issues

• Could not see signal with the thin sample and the CRLs inserted
• clear aberations from our CRLs
• CRL arm 4 motors were not moving. To recover it, we connected the motor and encoder cables from the pinhole arm.

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.

Staff: AR, MS, DM, KK, RL, RdW

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 900 uJ
• Beam down around 1h

Optical laser delivery

• None

Achievements/Observations

• XTD2 lenses were realigned
• Crystal diffraction data from lysozyme and MOF collected with detector close up

Issues

• Beam down around 1h
• Once again we lost connection to JF4M module 01 requiering reset of receivers.

Beam drift in the horizontal direction (XTD9_XGM x position) started at around 10am and continuously drifted until 16:00.

After then, beam has been drifted back to original position within 4 hours.

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)

Beam drift in the horizontal direction (XTD9_XGM).

From ~16:00, X-ray beam started to drift in the horizontal direction. In total, ~0.3 mm drift observed within 2-3 hours.

Attachment 1: Beam X position in XTD2_XGM and XTD9_XGM

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

# Morning Shift Summary 21.10.23

Ben, Eugenio

Achievements
* Found maximum of CDW with theta scan
* set up for time-resolved measurements

Problems
* FEL was down most of the shift due. Beam delivered around 12:30

achievements:
- Viking spectrometer set up in 8th order around 1280eV and calibrated

problems:
- problems with Viking motors. Took couple of hours to solve, Martin came on site
- problems with moving exit slit (Blade_Bottom motor does not move). Not solved by EEE on call, may be mechanical problems. Called run coordinator, XRO on call (Maurizio) is going to inspect the slit in the tunnel today. Operation of SCS relies on exit slit available (now it opened to ca. 10mm)

Achievements

• Two color mode established with 11.5 GeV, 1.335 keV col1, 1.27 keV col2
• Beam size characterized using Viking + online tool
• Jet found by scanning and looking at transmitted signal on Viking

Problems

• Issue with train Id of Chem motors --> fixed by setting proper trigger
• Beam loss around 19:30 induced instability in the two color mode, slow degradation of intensity and stability until 23:00 when it was not possible to use the beam
  • Called PRC, decided to tune to single color, 1.3 keV for the night
• Jet froze

Achievements

• Located flat jet and attempted measurement of XAS at several incident energies 1300, 1305, 1315 eV

Problems

•  We have difficulty locating the beam on the sample
  • We have not found a signal on eith of the diodes in the Chem chamber.
  • Knife edges with the viking are daoable but require more extended analysis
• Jet froze due to a leakage from the side of the chip. The ice crusher has been avoided to solve
• The filter in the hRIXS was broken and had to be relplaced.

Achievememts:

1. optimised the beam rep rate to value of 140KHz for a better signal 
2. changed nozzles and refilled the reservoir
3. Improved notebook for data analysis
4. Cammille made an online tool to see correlations between Viking and XGM --> very useful!

Night shift:

1. repeating measurements with one color with the new settings
2. following for the 2 colors plan

2 color mode

Achievements

• Fluence scan
• delay scan to identify cross talk of two colors
• Optimized beam size

Problems

• Struggle to find the expected signal when scanning color 2 energy
  • Optimized conditions

Plan for the rest of the night

• Repeat energy scan with optimized conditions
• Maybe try at a different delay

Achievements

• Used scanning of liquid jet to improve S/N
• Measured x-ray PP XAS as a function of the delay between the two X-ray colors
• Scan energy of probe pulse with fixed pump energy

Problems

• No clear signature of ionized states observed in XAS yet

Achievements

• Measured self-refreenced XAS spectra with single color baem at the Mg K-edge

Problems

• Liquid jet required some mantanence during the shift
• Some newton detector images filled with NANs