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  OPERATION-2023 logbook, Contact: F.Wolff-Fabris, A.Galler, L.Samoylova, H.Sinn  Not logged in ELOG logo
Message ID: 50     Entry time: 21 Feb 2023, 23:31
Author: Thomas Baumann 
Group:  
Subject: SASE1 changing photon energy changes the 2-color setup in SASE3 

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.

Attachment 1: Screenshot_from_2023-02-21_23-28-02_1.png  71 kB  | Show | Hide all | Show all
Attachment 2: Screenshot_from_2023-02-21_23-35-20.png  177 kB  | Hide | Hide all | Show all
Screenshot_from_2023-02-21_23-35-20.png
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