Activities:

• continued tr-RIXS scans
• tried to find ways to mitigate the energy drifts of the mono (see below)
• confirmed in user data that the FEL-PPL timing was not changing (see below)
• setting up for tr-RIXS at beginning of night shift

Problems:

• the mono energy has been drifting, presumably due to warming of the grating.
• automatic correction of the elastic line in the RIXS data was not working reliably
• we suspected a timing drift, but it seems that the monitor (photodiode + oscilloscope) itself is drifting. That's a new one.