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 Romain Letrun on 10 Aug 2023, 07:22
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X-ray delivery
9.3 keV, up to 181 pulses at 564 kHz, ~1.8 mJ. Overall stable delivery.
Optical laser delivery
800 nm, 50 fs, 564 kHz, up to 185 pulses. Overall stable delivery.
Achievements/Observations |
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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 Romain Letrun on 11 Aug 2023, 07:16
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Shift summary for 10.8.2023
X-ray delivery
9.3 keV, up to 181 pulses at 564 kHz, 1.8 - 1.9 mJ
Optical laser delivery |
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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 Romain Letrun on 12 Aug 2023, 07:12
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Shift summary for 11.8.2023
X-ray delivery |
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Shift summary, posted by Konopkova Zuzana on 19 Aug 2023, 06:20
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beam parameters: 7.7 keV seeded, 2.2 MHz, up to 20 pulses, 150 uJ/pulse
user program, measuring IXS spectra of plasmons with high resolution using seeded beam and monochromators
mono (re-)alignment
to minimize the SASE pedestal of the seed. Need to search for good position of the beam on the crystals as with just a slight change in pointing, the transmission |
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Shift summary, posted by Tokushi Sato on 22 Aug 2023, 23:32
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X-ray delivery
9.3 keV, up to 178 pulses at 564 kHz, 3.7 mJ, stable delivery
Beam delivery was started from 19:00
Optical
laser delivery |
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Shift summary, posted by Tokushi Sato on 23 Aug 2023, 22:56
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X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 3.7 mJ, beam intensity drop, missing last 10-20 pulses in train sometime
Optical
laser delivery |
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Shift summary, posted by Tokushi Sato on 24 Aug 2023, 22:51
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X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 3.7 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 90 pulses @ 282 kHz
Achievements/Observations |
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Shift summary, posted by Johannes Moeller on 25 Aug 2023, 06:20
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Shift summary the 24th of Aug
MID takes the seeded beam about 200 uJ including SASE background.
Monochrometer is aligned.
Mono + CRL2 was tested.
Found
rough timing with a fast diode at the sample position
Finding the temporal overlap with Forsted YAG hasn't been done yet. The motor (PPODL) |
Shift summary, posted by Tommaso Mazza on 25 Aug 2023, 07:29 
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problems with machine operation
very low yield at 1.8keV, took ~2hrs tuning time to get 600uJ (linear taper)
SA3 cells opened without us knowing when hv was changed |
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Shift summary, posted by Tokushi Sato on 25 Aug 2023, 23:03
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X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 2.7 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz
Achievements/Observations |
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Shift summary, posted by Felix Brausse on 26 Aug 2023, 02:07
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Shift summary the 25th of Aug
Found laser and X-ray spatiotemporal overlap with Bi diffraction peak
Found a diffraction peak from STO nano particles
X-ray
dose test is ongoing |
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Shift summary, posted by Tokushi Sato on 27 Aug 2023, 23:09
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X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 2.4 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz
Achievements/Observations |
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Shift summary, posted by Wonhyuk Jo on 28 Aug 2023, 02:14
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Shift summary for 28th of Aug.
- Realigned the center of rotation.
- MID took the seeded beam at about 120 uJ around 4 p.m. after the long intervention. |
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Shift summary, posted by Tokushi Sato on 28 Aug 2023, 23:03
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X-ray delivery
9.3 keV, up to 185 pulses at 564 kHz, 2.3 mJ, stable delivery
Optical laser delivery
PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz
Achievements/Observations |
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Shift summary, posted by Wonhyuk Jo on 29 Aug 2023, 03:14
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Shift summary for 29th of Aug.
- Conducted Time-resolved Bragg CDI experiment using 3rd harmonic pump laser.
- Collected coherent diffraction patterns from Perovskite-oxide nanocrystals for various time delay and laser fluence. |
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Shift summary, posted by Oliver Humphries on 05 Sep 2023, 22:33
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Received the beam from day shift, aligned to beam stop (low signal due to 4m air scatter, only 700uJ upstream)
ZYLA5 camera was
having issues, restarted without rotating to limit dropped trains.
1.2mm CVD solid attenuator in SA2 seems to be damaged
We
have trouble with our SEPS interlock after changes last week
We are supposed to be able to close the shutter (upstream of CRL3) without removing |