X-ray delivery
- 10.65 keV, up to 339 pulses at 1.13 MHz, 1.6-1.8 mJ.
- 12.4 keV, up to 30 pulses at 1.13 MHz, 1.0-1.2 mJ.
- Beam not aligned to the crosshair at 12.4 keV, but we could work with it as it is to avoid further tuning.
- Overall stable delivery.
Optical laser delivery
Achievements/Observations
- Thermal measurements with Be and Al CRLs under various conditions.
- Performed test with SQS to determine the effect changing number of SASE1 bunches. Upon changing from 339 to 30 bunches at 1.13 MHz, the pump-probe signal in SQS decreased by ~30% and partially recovered within a few minutes, but was at not point lost. Clearly, the decision made yesterday that prevented us to use the beam over the last two hours of the shift and to complete our programme was not based on solid evidence.
- Setup and alignment of IRDa in preparation for next week.
Issues
- Photon energy was changed from 12.4 to 12.0 keV shortly after 23:00 while we were still using the beam.
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