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Experiment data
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OPERATION-2023 logbook, Contact: F.Wolff-Fabris, A.Galler, L.Samoylova, H.Sinn |
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Message ID: 87
Entry time: 18 Mar 2023, 01:45
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Author: |
Johannes Moeller |
Group: |
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Subject: |
shift summary |
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- stable HXRSS delivery at 8.99 keV, 1 bunch. XGM intensity during the day decreased from 750 uJ to 600 uJ.
- Vacuum in sample chamber stabilized with cold trap and full beam path opened to AGIPD and endstation
- Again problems with smaract stages in DES, but imager in a good position to continue.
- First scattering data recored from water jet. Unknown, bimodal intensity distribution
- Focus characterization of SDL lower branch with knife edge, X-ray eye and SAXS speckle data. Larger (>10 um) as compared to direct beam with same focussing setup.
- Clear influence of splitter insertion on beamsize observed. Beam is smaller without splitter crystal.
- Current status: Alignment of upper branch unfinished, X-ray eye inserted, sample chamber vented
For the next shift:
- Finsish alignment of upper branch
- Characterize both beams in size with Xray eye. Try if slightly different lense combinations or M2 bender settings improve the situation.
- Overlap both beam on the sample
- Possibly insert upstream pinhole just in front of jet to clean up and ensure overlap
- Take data, enjoy
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