achievements:

• hooked up sample cooling and reached 20K at sample at typical low consumption rate
• we archieved targeted resolving power of ~10,000 or 86meV @ 857eV at low temp 20K after indications that heating broadens the elastic line of CoO
• we observe sample damage at 30% and higher transmissions using 350pulses at 1.13MHz, while 20% or less seems fine and elastic line width and intensity remains stable
• we optimise focus condition == 10microns with focus downstream of sample position. KB VFM = 2.04  (beam size vs KB VFM was measured via knife edge scans) dE ~80-85meV
• transfer new sample holder with test sample

plan for tonight and tomorrow morning

• the exit arm may still improve the resolving power, less may be expected from the grating pitch. this can be explored but has lower priority as we reached slightly above E/dE = 10,000 already.
• take RIXS and XAS data on test sample, find optimum settings (damage threshold, camera readout etc) 
• late shift will start with 800nm timing.

problems:

• nothing to report