Shift summary, posted by Romain Letrun on 12 May 2024, 07:35
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X-ray delivery
11.56 keV, 1-352 pulses @ 1.13 MHz, 2.4-3.1 mJ. Stable delivery.
Intensity gradient with long train now slightly less than
20%.
Optical laser delivery |
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Shift summary, posted by Ulrike Boesenberg on 13 May 2024, 08:48
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Weekend summary:
Overall stable beam delivery with 300bunches @18keV and 750uJ
-issue with XGM on Saturday night/morning |
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Shift summary, posted by Romain Letrun on 13 May 2024, 10:36
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X-ray delivery
11.56 keV, 1-197 pulses @ 564 kHz, 2.4-3.1 mJ.
Beam down a bit over
1 hour due to accelerator interlock problem.
Optical laser delivery |
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Shift summary, posted by Romain Letrun on 14 May 2024, 11:49
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X-ray delivery
11.56 keV, 1-197 pulses @ 564 kHz, 2.6 mJ.
Optical laser delivery
No PP laser output after shift change.
Achievements/Observations |
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Shift summary, posted by Romain Letrun on 26 May 2024, 00:23
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X-ray delivery
6.0 keV, up to 202 pulses at 564 kHz and 101 at 282 kHz, 0.8-1.6 mJ
Low pulse energy after beam handover. Improved around
10:00.
~1.5 hour downtime due to issue with A5.
Several timing jumps of up to 1.5 ps visible on BAM and confirmed by X-ray/optical |
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Shift summary, posted by Romain Letrun on 26 May 2024, 23:23
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X-ray delivery
6.0 keV, up to 202 pulses at 564 kHz, 1.8-1.9 mJ.
Stable delivery except for downtime at start of shift (until 7:15) and two
more hours in the morning.
Optical laser delivery |
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Shift summary, posted by Konopkova Zuzana on 27 May 2024, 06:41
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beam parameters: 2 colors at around 6.5 keV, 1 pulse
achievements:
user program continues with data acquisition at slightly varying photon energies (tens of eV both colors simultaneously) and at different delays |
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Shift summary, posted by Romain Letrun on 27 May 2024, 23:33
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X-ray delivery
6.0 keV, up to 202 pulses at 564 kHz 1.3-1.8 mJ.
Decaying intensity through the day. Recovered once at 15:15 and slowly decaying
again after that.
Optical laser delivery |
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Shift summary, posted by Romain Letrun on 04 Jun 2024, 23:38
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X-ray delivery
7.0 keV, up to 202 pulses at 564 kHz, ~1.7 mJ.
Number of pulses initially limited to 178. Promptly addressed by BKR.
Optical laser delivery |
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Shift summary, posted by Romain Letrun on 05 Jun 2024, 23:22
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X-ray delivery
7.0 keV, up to 202 pulses at 564 kHz, 1.6-1.9 mJ.
Average pulse energy tuned up to 1.9 mJ at 14:45, but slow continuous decay
after that down to 1.7 mJ at the end of the shift.
45 minutes downtime in the morning and another 15 minutes to reset the IBFB later on, as |
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Shift summary, posted by Giuseppe Mercurio on 07 Jun 2024, 15:19
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Morning Shift Summary for 07.06.2024 (Teguh, Natalia)
Achievements:
Aligned the beamline to deliver the FEL beam into the hutch
Check the FEL beam size using knife-edge scans
Requested
BKR to re-tune the FEL to achieve higher pulse energy. They are still tuning, but we aim to reach 3 mJ per pulse
Problems: |
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Shift summary, posted by Chan Kim on 07 Jun 2024, 23:12
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X-ray delivery
- 7.0 keV, up to 202 pulses at 564 kHz, 1.0 mJ.
- Average pulse energy was about 1.9 mJ on Tuesday and Wednesday. It has to be discussed with BKR tomorrow morning. |
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Shift summary, posted by Natalia Gerasimova on 08 Jun 2024, 15:21
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Morning shift on 08.06.2024 (Natalia, Teguh, Yi Ping)
Achievements:
Focus the KB to ca. 40 um
Found time zero using delay scan of the RIXS PFY
Found strong pump probe effect on the
Fe reference sample
Problems: |
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Shift summary, posted by Abhisakh Sarma on 08 Jun 2024, 23:20
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X-ray delivery
- 7.0 keV, up to 202 pulses at 564 kHz, 1.0 mJ.
- X-ray beam pointing changed at around 18:12 and it affects nano KB focus (from ~200nm to ~1um). |
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Shift summary, posted by Giuseppe Mercurio on 09 Jun 2024, 22:21
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Late Shift summary
Achievements:
- recovered the beam overlap |
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Shift summary, posted by Chan Kim on 09 Jun 2024, 22:45
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X-ray delivery
7.0 keV, up to 202 pulses at 564 kHz, 1.0 mJ.
Optical laser delivery
ns laser for jet illumination
Achievements/Observations |
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Shift summary, posted by Abhisakh Sarma on 11 Jun 2024, 00:43
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**X-ray delivery**
7.0 keV, up to 202 pulses at 564 kHz, 1.0 mJ.
**Optical laser delivery**
ns laser for jet illumination
**Achievements/Observations** |
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Shift summary, posted by Jörg Hallmann on 13 Jun 2024, 01:46
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alignment of the instrument including collimation and beam shaping
test of the tempus detector using standard samples with different rep rates, intensities & # of pulses
start commissioning of the PhotonArrivalMonitor (temporal & spatial overlap, white light spectrum) |
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Shift summary, posted by Jörg Hallmann on 14 Jun 2024, 01:53
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continue with Tempus tests
continue with PAM commissioning (first results of the working device at MID)
comments: |
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Shift summary, posted by Idoia on 23 Jul 2024, 17:17
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ZZ access at XTD10
The
LE PM X and HE PM X motors were checked and they are not physically moving. It was also noticed that the encoders numbers aren't changing. -> second
ZZ was done and the problem was solved. (check entry https://in.xfel.eu/elog/XRO+Beam+Commissioning/412)
The SQS exit slit was checked |