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 |
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Shift summary, posted by Giuseppe Mercurio on 24 Jul 2024, 15:22
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Shift summary (Natalia, Giuseppe)
Achievements:
M1, M2 pitches adjusted
Grating AX changed value during shutdown, encoder offsets have been recalibrated
Set up
SCS, 9mrad, HEPM, grating configuration
Set up SCS, 9 mrad, HEPM, blank configuration
Problems: |
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Shift summary, posted by Romain Letrun on 27 Jul 2024, 23:42
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X-ray delivery
- 9.22 and 11.0 keV, 1-352 pulses @ 1.1 MHz, 600-1400 uJ.
- Large intensity gradient with long trains (>70% drop with 352 pulses @ 1.1 MHz). |
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Shift summary, posted by Romain Letrun on 28 Jul 2024, 23:34
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X-ray delivery
11.0 keV, 1-352 pulses @ 1.1 MHz, 600-1100 uJ.
Even larger intensity gradient with long trains than yesterday.
Optical laser delivery |
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Shift summary, posted by Giuseppe Mercurio on 29 Jul 2024, 06:45
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## Shift summary night July 28th-29th
Achievements:
- we saw signal on both MCPs (with a voltage of around 1500 V). We used the MCPs to measure XAS at Cu L edge at different theta angles from 120 |
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Shift summary, posted by Romain Letrun on 29 Jul 2024, 23:22
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X-ray delivery
11.0 keV, 1-351 pulses @ 1.1 MHz, 300-1100 uJ.
Continuously decaying average intensity through the day.
Large intensity
gradient with long trains.
Optical laser delivery |
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Shift summary, posted by Jörg Hallmann on 08 Aug 2024, 00:18
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optimization of seeding (still not as good as needed)
set position for the two color mode (difference 3-4 ev)
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Shift summary, posted by Jörg Hallmann on 09 Aug 2024, 01:59
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optimized the SDL alignment
found timing of the upper (-520 ps) and lower branch (-514.5 ps) of the SDL
moved the upper branch by 3 ps (positive) and lost the beam on the merger crystal - difficult to get it back |
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Shift summary, posted by Jörg Hallmann on 10 Aug 2024, 01:17
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Found the delay time from upper and lower branches of SDL with a frosted-YAG.
The upper branch is -512.8 and the lower branch is -513.28.
The delay time difference is about 500 fs. |
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Shift summary, posted by Wonhyuk Jo on 11 Aug 2024, 02:15
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Found the spatial overlap on the Suna microscope with Zyla.
Found the SDL motor position giving 200 fs time difference between the upper and lower branches.
The encoder and current values of DC2_CASZ and DC1_CASZ are not 100 % correlated. |
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Shift summary, posted by Romain Letrun on 11 Aug 2024, 14:33
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Summary 06.08 - 10.08
X-ray delivery
9.3 keV, 1-352 pulses @ 1.13 MHz and 564 kHz, 1.4-1.8 mJ
11.56 keV 1-352 |
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Shift summary, posted by Raphael de Wijn on 11 Aug 2024, 23:07
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X-ray delivery
11.56 keV 202 pulses @0.5 MHz, ~1.0 mJ
some downtime due to fire alarm in the tunnel |
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Shift summary, posted by Wonhyuk Jo on 12 Aug 2024, 02:07
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Found spatial overlap at Suna microscope with Zyla cam.
The splitting ratio was obtained about 1:1.
The spatial jittering from upper and lower branch were investigated. |
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Shift summary, posted by Raphael de Wijn on 12 Aug 2024, 23:47
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X-ray delivery
11.56 keV, 202 pulses @0.5 MHz, ~0.9 mJ, stable delivery
Optical laser delivery |
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Shift summary, posted by Wonhyuk Jo on 13 Aug 2024, 02:04
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Found the interference fringe at Suna microscope with Zyla cam from MID split-and-delay line.
The fringe patterns were recorded as a function of delay controlled by the upper branch motor position.
Obtained the interference fringe patterns with two pulses with different repetition rate of machine. |
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Shift summary, posted by Raphael de Wijn on 21 Aug 2024, 23:34
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X-ray delivery
12.40 - 12.82 keV, ~1.1 mJ
Optical laser delivery |