X-ray delivery: stable and flat over 190 pulses per train. 1.1 MHz with 200 uJ short intervention needed to improve intensity after it dropped

Optical laser delivery: NA

Achievements/Observations:

• Beam optimization and characterization
  - Short pulses tuned and number of spikes reduced
• X-ray focus FWHM calculation found to have a bug in pixel size used
  - rest to 0.2 FWHM of focused beam now better than 1.5 microns
• Laser illumination installed to enable particle visualization to aid alignment and feedback
• Sample injection and data collection for several hours
  - Hits seen from Silver cubes
  - very low hit rate from copper
  - cubes, and spheres

Issues:

• DAQ - multiple crashes and restarts needed throughout the shift
• Proc pipeline - some runs fail to processwhile adjacent runs collected with same conditions (run repeater) process without errors
• Sample injection - copper samples continue to be difficult to inject
  - very low hit rates (few hits seen per run)
  - clogging issues
• Focus drift - focus was tuned at around 3 pm, by 9 when we could check again focus was >3 microns FWHM
• Beam intensity reduced during the shift and BKR needed to tune it back
  - returned intensity to 200 uJ - they asked if we wanted to continue but did not as this could have resulted in more SASE spikes