Issue, posted by Thomas Preston on 24 Oct 2023, 19:26 
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Vacuum issue at HED
At 18:26 the vacuum failed in the HED CRL3 chamber in the OPTs hutch. The vacuum failed in the section and tripped the valves in the OPT hutch;
it went from 1e-8 to 5 mbar in seconds. The leak is confined to the CRL chamber -- the sections upstream and downstream are not compromised and still have |
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Night shift summary, 23.10.2023, posted by Laurent Mercadier on 23 Oct 2023, 06:46
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Shift summary, posted by Raphael de Wijn on 23 Oct 2023, 05:15
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X-ray delivery
13.6 keV, ~1.6 mJ and up to 352 pulses at 1.1 MHz.
Beam down from 10:30 to 19:00.
Optical laser
delivery |
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Late shift summary 22.10.2023, posted by Sergii , Giacomo on 23 Oct 2023, 01:38
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Achievements
-Check XAS and static RIXS after the beam was back
-Do the warm up cycle to remove ice from the sample surface |
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Shift summary, posted by Alexey Zozulya on 23 Oct 2023, 01:10
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Milestones:
*Finish measurement program on the STO sample at room temperature
*Check mono fpitch and energy rocking curve |
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Shift summary, posted by Benjamin van Kuiken on 22 Oct 2023, 13:21
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Morning shift Summary 22.10.2023
Achievements
Checked beam alignment and overlap
confirmed sample integrity with static rixs on other sample locations
Problems |
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night shift summary, 22.10.2023, posted by Laurent, Phuong on 22 Oct 2023, 07:34
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Night shift summary 22.10.2023
Laurent, Phuong
Achievement:
-Collecting static RIXS data at different FEL repitition rates |
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Shift summary, posted by Raphael de Wijn on 22 Oct 2023, 00:27
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X-ray delivery
13.6 keV, ~1.6 mJ and up to 352 pulses at 1.1 MHz.
Beam down until around 1PM.
After agreement with FXE, we could
collect data until midnight.
Optical laser delivery |
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Late shift summary 21.10.2023, posted by Sergii, Giacomo on 21 Oct 2023, 23:34
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Achievements:
-Collecting TR-RIXS data for different fluencies and delay range
Problems |
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Shift Summary, posted by Benjamin van Kuiken on 21 Oct 2023, 15:34
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# Morning Shift Summary 21.10.23
Ben, Eugenio
Achievements |
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Night shift summary 21.10.2023, posted by Laurent, Phuong on 21 Oct 2023, 06:30
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Night shift summary 21.10.2023
Achievements
Found T0 on SiN, but the response is very slow (~10 ps).
Azimuth (phi) scan
Start of theta scan with optimized
phi
Problems |
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Late Shift Summary on 20.10.2023, posted by Sergii, Giacomo on 20 Oct 2023, 23:22
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Late shift summary 20.10.2023
Achievements
-Switched AFS to burst mode
-Characterized PPL beam size |
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Shift summary, posted by Romain Letrun on 20 Oct 2023, 23:10
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X-ray delivery
13.6 keV, ~1.6 mJ and up to 352 pulses at 1.1 MHz.
Beam down at 22:47, not recovered before the end of the shift. Otherwise
stable delivery.
Optical laser delivery |
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Morning Shift Summary, posted by Benjamin van Kuiken on 20 Oct 2023, 15:22
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Achievements
Tested MCPs and APD for XAS
Both MCPs give a good XAS spectrum with no amplification, but small MCP requires higher bias
voltage
No fluorescence signal observed on the APD
Measured XAS of both samples
Measured static RIXS |
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Shift end, posted by Jayanath Koliyadu on 19 Oct 2023, 23:30
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X-ray delivery
13.6 keV, ~1.7 mJ and up to 352 pulses at 1.1 MHz
Optical laser delivery
PP laser, 1 to 202 pulses, stable delivery except for the down time of ~1h
Achievements/Observations |
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Shift summary, posted by Raphael de Wijn on 18 Oct 2023, 23:19
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X-ray delivery
13.6 keV, ~1.8 mJ and up to 352 pulses at 1.1 MHz
Optical laser delivery
PP laser, amphos laser computer in error for ~2h
Achievements/Observations |
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Shift summary, posted by Alexey Zozulya on 18 Oct 2023, 02:09
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Shift summary (p4239)
Achievements:
- HXSS beam at 10.5 keV at 400 uJ pulse energy |
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Shift summary, posted by Raphael de Wijn on 17 Oct 2023, 23:23
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X-ray delivery
13.6 keV, ~1.6 mJ and up to 202 pulses at 0.5 MHz
Optical laser delivery
PP laser, stable delivery
Achievements/Observations |
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Experiment summary, posted by Konopkova Zuzana on 16 Oct 2023, 05:05
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Beam parameters: 18.8 keV, 350-600 uJ, 1 pulse
Experiment: Shock compression experiments using DiPOLE 70 J + XRD
- run through most of the users targets, largely succesful |
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Shift summary, posted by Konopkova Zuzana on 15 Oct 2023, 04:43
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the initial 600-700 uJ of pulse energy at the beginning of the user beamtime dropped down to 300-350 uJ over night from 14th to 15th. The operators
did not seem to be able to bring the pulse energy above 500 uJ, which is where it was after the RC's intervention in the morning. Is it possible to
bring up the energy in the morning?
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