Morning shift summary, posted by Giuseppe Mercurio, Teguh Asmara on 07 Jun 2023, 15:04
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achievements:
FEL beam realignment because pointing was off since we had 0 pulses during the night
coarse timing was found
knife
edge scans of FEL to achieve twice the PPL beam size
problems: |
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late shift summary, posted by Loic Le Guyader on 06 Jun 2023, 23:11
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achievements
aligned the beam through up to the XOX imager
prepared FFT for reflectivity measurement
tested new DSSC gain files
for Tb M5 edge
problems |
Status, posted by Naresh Kujala on 06 Jun 2023, 08:28 
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SA2 photon beamline
- SRA position were 7 mm x 7 mm, MID reported they see the hallow of beam shadow at MID Popin
- I have closed the SRA to 3.5 mm x 3.5 mm |
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Status, posted by Naresh Kujala on 05 Jun 2023, 08:28
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- SA2 photon beamline
Today morning found the CRL1: 5 and 6 arm and Pop-in 45-I are still IN. I have retracted them. |
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Issue, posted by Tommaso Mazza on 05 Jun 2023, 06:45
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around 6:15, the lights as the one shown in the attachment turned on by themselves in the control hutch. after some minutes, they switched off.
from the exp hutch camera, we realized that this happened in there as well, which impacted negatively on the running measurement. The pnCCD is
sensitive to ambient light and we have to keep the hutch dark while measuring. |
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Shift summary, posted by Romain Letrun on 04 Jun 2023, 21:17
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X-ray delivery
12.2-12.45 keV, up to 339 pulses at 1.13 MHz, 0.8-1.2 mJ.
Couple of minutes beam interruption.
Optical
laser delivery |
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Shift summary, posted by Konopkova Zuzana on 04 Jun 2023, 14:53
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beam parameters: 20 keV, 300 uJ, 352 pulses
continuation of user programe.
Machine performance very good for trying the 20 keV the first time. Experiment also going well.
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Shift summary, posted by Romain Letrun on 03 Jun 2023, 23:40
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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 |
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Pulse energy has dropped to ~50% from this morning, posted by Thomas Preston on 03 Jun 2023, 13:42
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03 Jun 2023, 13:46
We called the BKR to ask what they can do about our pulse energy being 50% (~160uJ and slowly dropping) of what it was since we made our hutch
intervention (with 0 bunches). BKR were asked to organise a time slot with PRC and the other instruments to make an intervention to try to increase our |
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Shift summary, posted by Thomas Preston on 03 Jun 2023, 09:42
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X-ray parameters: 20 keV, 352 pulses, ca 300 uJ
running user samples.
experiment going overall well.
X-ray performance: |
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Shift summary, posted by Romain Letrun on 02 Jun 2023, 23:34
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X-ray delivery
10.65 keV, 128 pulses at 1.13 MHz, 1.6-1.7 mJ.
Overall stable delivery.
Optical laser delivery
800 nm, 50 fs, 226 pulses at 1.13 MHz.
Achievements/Observations |
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pointing stability, posted by Tommaso Mazza on 02 Jun 2023, 06:17
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we lost spatial overlap on several instances.
It seems that this happens when SASE2 changes number of pulses.
when we have SASE2 changing number of pulses, spatial overlap is lost and this goes with a change in the position read by the xgm in the order |
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Shift summary, posted by Romain Letrun on 01 Jun 2023, 23:27
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X-ray delivery
10.65 keV, 128 pulses at 1.13 MHz and 16 pusles at 141 kHz.
Overall stable delivery.
Optical laser
delivery |
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Shift summary, posted by Konopkova Zuzana on 01 Jun 2023, 12:10
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X-ray parameters: 20 keV (20080 eV from HIREX), 352 pulses, cca 250 uJ
changed setup to diamond anvil cell experiments with laser heating
installation of AGIPD detector
running user
samples, mostly carbon materials to constrain the phase diagram of carbon at high pressures and temperatures.
experiment going overall |
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Shift summary, posted by Romain Letrun on 31 May 2023, 23:15
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X-ray delivery
10.65 keV, 128 pulses at 1.13 MHz and 16 pusles at 141 kHz.
Slope reduced at the start of the shift. Approximately 20% slope
after that with the patterns used for data collection today.
Optical laser delivery |
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Issue, posted by Naresh Kujala on 31 May 2023, 17:35
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HED reported that they are unable to go 352 pulses and while changing/dailing the no. of pulses in the bunch Pattern it is showing the EPS is
limited to 300 pulses. It seems on the SA2_MAIN scene the link for bunch Pattern apparently using the macros scene, which is preventing it from going |
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Shift summary, posted by Romain Letrun on 30 May 2023, 23:02
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X-ray delivery
10.7 keV, up to 339 pulses at 1.1 MHz.
Large slope through the train, up to 70% with 339 bunches. BKR was not able to find
the cause so far, we agreed to pursue this further tomorrow.
Achievements/Observations |
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Shift summary, posted by Fernando Ardana on 28 May 2023, 23:15
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User proposal 3273:
X-ray delivary
We use several deliveraly modes:
Continous single pulse
Continous 30 pulses
POD:
1 pulses / 30 pulses
All works fine, FXE is sastificed with X-ray delivery
DA:
Few |
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Shift summary all week, posted by Martin Teichmann on 28 May 2023, 22:57
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we were trying to make THz and cross correlate this to the pump laser.
We managed to see THz and an auto-correlation with the pump laser therein. Unfortunately we did not see any THz generation using the FEL.
Problems: |
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Shift summary, posted by Tokushi Sato on 25 May 2023, 06:35
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X-ray delivery
10.7 keV, 1.2 mJ, 1-200 pulses, stable delivery
Optical laser delivery
None
Achievements/Observations |