FXE beam alignment 9 keV 2 mrad, posted by Kelin Tasca on 20 Jul 2023, 18:23 
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Shift summary of SASE1 alignment, posted by Kelin Tasca on 20 Jul 2023, 20:21
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Beam aligned to SPB Pop-In https://in.xfel.eu/elog/XRO+Beam+Commissioning/185
Beam aligned to FXE Pop-In https://in.xfel.eu/elog/XRO+Beam+Commissioning/187
Vibration tests: https://in.xfel.eu/elog/XRO+Beam+Commissioning/188 |
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Summary of SA1 shift for XO and instruments, posted by Kelin Tasca on 21 Jul 2023, 17:22
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PBLM checked: https://in.xfel.eu/elog/XRO+Beam+Commissioning/203
Solid attenuators checked: https://in.xfel.eu/elog/XRO+Beam+Commissioning/194 |
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Shift summary Feb 8th, posted by Jörg Hallmann on 09 Feb 2023, 01:11
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stable beam at 9kev (about 1.1 mJ)
checks of the sample environment required for the upcoming user experiment
test data aquisition of SiO2 samples (data analysis still ongoing) |
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Shift summary, posted by Jörg Hallmann on 11 Feb 2023, 01:09
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sucessfull data taking for user samples
beam loss for ~15 min and a small issue with scannerX of the FSSS (could be fixed without support) but otherwise smooth operation
contact with ITDM since the data collection speed could be too high for the transfer speed from SDD to HDD - should be kept under investigation.... |
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Shift summary Feb 11th, posted by Jörg Hallmann on 12 Feb 2023, 01:56
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intense data taking on various samples
2 main issues:
- data collection using the optimize macro is too fast for the system and calibration and the data transfer from SDD to HDD is slower than collecting |
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Shift summary March 28th, posted by Jörg Hallmann on 29 Mar 2023, 01:31
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Seeding at 9 keV with 800 - 1000uJ intensity
1. alignment of the lower branch of the SDL
2. focussing with CRL2 and check of the beam size using wire scans (slightly more than 10 um) |
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shift summary March 29th, posted by Jörg Hallmann on 30 Mar 2023, 02:37
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achievments: alignment of the SDL (both branches)
measuring of samples & calibrants
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shift summary March 30th, posted by Jörg Hallmann on 31 Mar 2023, 01:51
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- seeding at ~800 uJ
- repaired the laser interlock of A.08
- EPIX back in operation |
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Shift summary, posted by Jörg Hallmann on 25 May 2023, 01:59
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optimization of seeding ongoing
tasks achieved during alignment:
- polarizer aligned |
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Shift summary, posted by Jörg Hallmann on 09 Aug 2023, 01:42
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after alignment of the beam, the main topic of the day were flatfields for the AGIPD with various
settings
corresponding darks have been taken in addition
it was challenging to generate proper flatfield intensities
on the detector (1photon peak equally high as the 0photon peak) due to the low intensity (750uJ)
shift crew received a warning of the machine |
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Shift summary, posted by Jörg Hallmann on 10 Aug 2023, 01:31
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- finalized the flatfields of the AGIPD at 0.5 MHz
- optimized the performance of the beam (now 850 - 950 uJ)
- measured flatfield and darks for the Jungfrau detector |
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Shift summary, posted by Jörg Hallmann on 11 Aug 2023, 01:44
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alignment checks of the CRL2 device as well as the Mono - continuation of both devices together planned for tomorrow
flatfelds for EPIX & AGIPD (needed to be redone because of too low intensity during the previous measurements)
installation of the levitation device and first test measurements |
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Shift summary, posted by Jörg Hallmann on 12 Aug 2023, 01:32
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measured various sample using the levitation device
issues:
during the change of the sample detector distance, the AGIPD chiller "Julabo" switch itself off and went into error - on & off procedure |
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Shift summary, posted by Jörg Hallmann on 23 Nov 2023, 22:15
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progress with the Damnit - XPCS analysis test with various samples (SiO2, Ludox etc.)
tested some external samples P3HT, SOD1 but it looks like conventional XPCS is not working (signal too low - increasing transmission leads to
radiation damage in both cases) |
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Late Shift Summary on 15.08.2023, posted by Justine Schlappa, Le Phuong on 17 Aug 2023, 11:04
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Achievements:
Set up PP laser, find spatial and temporal overlap between FEL and PP laser
Optimize MCP and HAMP settings for good XAS signal
Find
time zero from XAS on sample and optimize for XAS delay scans at 40 deg incidence angle
Take a fluence series on XAS delay scan from about 0.1 |
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Shift summary, September 7 after nightshift, posted by Justine Schlappa, Guiseppe Mercurio on 07 Sep 2023, 07:24
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Achievements:
- Optimized hRIXS settings for OK edge at 145 deg scattering angle, resolution of about 50 meV
- Transferred the user sample |
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Afternoon Shift Summary on 17.08.2023, posted by Justine Schlappa on 17 Aug 2023, 23:54
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Achievements:
1. Finalized tr-RIXS series at 1.74 mJ/cm2
2. Checked FEL alignment |
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Shift summary, posted by Juncheng E on 05 Mar 2023, 23:13
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X-ray delivery
9.3 keV, 202 pulses, 564 kHz, intensity slope was fine
Optical laser delivery
800 nm, 68 pulses, 188 kHz. stable delivery
ns laser for illumination
Achievements/Observations |
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shift summary, posted by Johannes Moeller on 15 Mar 2023, 01:50
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HXRSS delivery, 600 - 700 uJ, 1 bunch, 8.991 keV. Pedestal visibly in HIREX, not checked with MID spectrometer yet.
beamline aligned
and beam brought to popin imager
struggle with jet pumping, to be continued
beam brought into experimental hutch, first rough alignment
of reference samples and cameras
Epix flight path leaked and window re-glued
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