We were set-up for 5.7 keV photon energy in SASE1. We made a test with BKR to change this energy to 9.3 keV. This had an effect on our two-color setup:

The first color pulse energy increased. See att 1. Green is the reference at 5.7 keV, blue is at 9.3 keV.

Att 2 shows the XGM history: pulse energy went up to 200 uJ in SQS XGMD during the change.

the users are unhappy about the increase of pulse energy in the pump pulse, because the ratio of pump versus probe is optimized with the setting where SASE1 operates at 5.7 keV.

we plan to record continuous delay scans (about 1 day for each scan) for the rest of the week, and pump-probe settings should be constant over time.