Achievements:

1. Performed tr-RIXS on peak A, B, and C at 2.4 mJ/cm^2
2. Performed tr-XAS on peak A at 3 fluences
3. Performed tr-RIXS on peak A at 4 mJ/cm^2

Problems:

1. BAM delay line compensator was not working due to incorrect macro. DOC and LM fixed the issue.
2. Delay line scan of hRIXS camera was not working as it was still configured for Viking. MT fixed the issue.
3. The new centroiding algorithm (provided natively by the 4137 kernel) is not consistent with integration mode. For the time being, we use an older, manually configured centroiding algorithm developed for a previous user beamtime.
4. tR-XAS results show large changes, but these large changes were not reflected in tr-RIXS.

Achievements:

1. tr-RIXS at 4 mJ/cm2 for energies A, B, C, and D (pre-edge)
2. Checked and optimized FEL alignment, t0 and overlap with PP laser after reset of machine synchronization

3. Long delay scans for Peak A and C, up to 100 ps
   Problems:

4. Need to reset machine synchronization by BKR

5. Camera scene got stuck, was resolved by DOC

shift summary from Saturday 15.04.2023:

Tasks:

- Calibration of Euler MDL

- Vibrometer measurements at M3 using the RY piezo

Beam was aligned to MID popin

we used values stored in MID setpoints 'B' but went there manually, using the EulerMDL

M1 - X value was corrected, as we found the center of the beam/mirror to be at 6.4mm - calculated beam angle after M1 is 2.14mrad

M2 - values slightly differ from saved setpoints but were quite well met using EulerMDL to reach the same beam position

M3 - we had to remove it a bit further from the beam, as it seemed to intercept it, when we first tried to get the beam through. This might in the end not have been necessary

End of shift:

beam aligned to MID

preabsorber in

SRA fully open

Alignment to HED: https://in.xfel.eu/elog/XRO+Beam+Commissioning/205

SA2 - divergence with various M2 bender positions  HED - https://in.xfel.eu/elog/XRO+Beam+Commissioning/200

SA2 - divergence with various M2 bender positions MID - https://in.xfel.eu/elog/XRO+Beam+Commissioning/196

Issues with HED PBLM blade in SA2: https://in.xfel.eu/elog/XRO+Beam+Commissioning/195

Vobration measurements could not be done https://in.xfel.eu/elog/XRO+Beam+Commissioning/207

End of shift:

SA2 left with preAbs in

machine wanted to increase intensity

Achivements:

-Cooling down the sample. Sample is at 14K

-Taking time resolved data at 70%  800 nm, -5 ps  - 65 ps

Problems

-Freezing of the transfer line while cooling. It seems the scroll pump was brocken. When we replace the pump cooling was OK.

Achivments:

-Measure time scans with magnetic field in opposite directions

Problems

-At some point data analysis was imposible. No reseurses could be dedicated for the analysis. We switch both AMORE and offline analysis to nodes, dedicated for the proposal.

-We found very slow drift of xray intensity at XGM. It was becasue x-ray pointing was slightly changed. We restore the pointing with M2 pitch motor

Achivments:

-Measure delay scans at two PPL fluencies on smaller grain size.

-Moved DSSC back to 1.45 m sample - detector distance

Problems

-No major problems

Achivments:

-Move DSSC closer to the sample.

-Measure delay scans for opposite magnetic field.

Problems:

-No major problems

Achievments:

- Align DPS to remove clipping of X-rays

- Get better focusing of PPL in the chamber

-Coarse timing with SIGNAl of OPA

-Switch back to 3 um PPL settings

Problems

-It was hard to work with DPS without motorized stages

Achivements:

-We measured vertical spot size for several VFM settings

Problems:

-We cannot focus the x-ray beam with KB. The best value what we can get is ~300 um. We checked the slits of KB. The ALAS is slightly clipped on parabolic mirror of tim ing chamber. TI is not clear if this is the reason. We cannot proceed with the program for hRIXS.

-Still no signal on APD.

Achievements:

1. Beam in sample chamber, almost overlapping with ALAS

2. We saw signal on MCP and diode2

3. Sample Motors aligned close to the desired height in chamber

Problems:

1. Slow response of Screens and mirror motors, solved by restarting the Beckhoff of the mirror motors

2. Could not find signal of unfocused beam on SCS Pop-In

3. Acquiring data with the spectrometer for energy calibration does not work

4, Motor STZ of XRD does not allow halfclip of the beam.

5. No Fluorescence signal on the APD

6. In the DAQ we can not execute "assign" or "cofigure" action

Achievements:
-Collecting TR-RIXS data for different fluencies and delay range
Problems
-No major problems

Achievements:

- we replaced broken SMA cable, and added an angle-connector at sample holder to aid the sample rotation when moving diagnostics to the flat jet

- we double-checked coarse timing and x-ray beam size

- we found t0 on SiN

- setting up RIXS with time delay steps for the night shift program

Achievments

-RIXS scans at different delay times and x-ray energies

-Cross check fine timing

Problems

-Nozzle was frozen. Pump was in error state.

Achievements:

- Find course timing with antenna

-Find find timing signla with TR_XAS on the sample

-Measure XAS with laser ON and OFF to find optimal conditions for TR study

-Measure TR_XAS at low T

Problems:

-temperature went up and the cooling was not responing to the change of needle valve. When we tweak a bit transfer line needle valve cooling starts again.