Shift summary, posted by Tomas Popelar on 04 Dec 2024, 07:12
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X-ray delivery
19 keV, ~ 400 - 450 uJ, 1 - 128 pulses, stable delivery
Optical laser |
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Shift summary, posted by Natalia Gerasimova on 01 Feb 2024, 07:14
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Moning shift summary (31.01 and 01.02)
Acievements:
- SRA recalibrated, cross position on FEL imager found |
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Shift summary, posted by Giuseppe Mercurio on 06 Feb 2024, 07:17
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Shift summary, posted by Giuseppe Mercurio on 08 Feb 2024, 07:00
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Late shift 07.02.24
Laurent, Martin
Continued with laser preparation |
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Shift summary, posted by Giuseppe Mercurio on 09 Feb 2024, 07:15
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night shift summary
achievements:
characterized FEL beam size to have 20 um x 20 um (Hor x Ver)
exchanged sample
closed KB baffle, HSLITS, guardstage
started |
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Shift summary, posted by Giuseppe Mercurio on 11 Feb 2024, 06:28
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Night shift summary
Andreas, Giuseppe
we finished to measure sample 17 and 41 in CARD 06_Y2018F04
we transferred sample Card_07_Y2018F19
we started measuring |
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Shift summary, posted by Giuseppe Mercurio on 13 Feb 2024, 06:38
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shift summary
Andreas, Giuseppe
continued pumpprobe measurements
around 5:30 we could not see any image at the MTE3 camera (after sample transfer), we tried |
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Shift summary, posted by Giuseppe Mercurio on 20 Mar 2024, 23:03
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Late shift summary
coarse timing
installed laser shutter on the laser
breadboard and I0 diode
exchanged camera of microscope to improve resolution
knife edge scans of FEL after BOZ
realized
that knife edge scans of OL cannot be done with present setup because OL cannot reach the diode in DIAG
Nahid prepared FeByP 1 liter, 30 mM
preparation |
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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 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 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 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 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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Issue, posted by Jan Gruenert on 28 Jan 2024, 13:50
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RC / BKR informs : Beam is down (since 12h10), all beamlines affected
The reason is failure of a quadrupole (power supply) downstream of the dogleg.
The MPS crew is working on recovery, access to XTL ongoing. |
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SA1 status, posted by Frederik Wolff-Fabris on 31 Jan 2024, 11:24
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A ZZ is taking place today, 31.01 at 11:30, in XTD9 to verify and fix the M3 Pop-in screen which is currently blocking the beam. It is not
yet clear if this is an electrical or mechnical problem.
** Update 13:05: ZZ intervention is finished and successful. A mechanical issue due to a loose coupling between motor and spindle was fixed. |
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Status, posted by Naresh Kujala on 01 Mar 2024, 17:11
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-Machine status
the cold compressor failure occurred at ~16.30hr today. And it will take around 35 hr to fix it. I will update via email (local contacts for
experiments) and Operation Elog tomorrow with more details. |
Issue, posted by Harald Sinn on 15 Mar 2024, 00:07 
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SASE1 bunch number was reduced to 10 pulses for no obvious reason.
Traced it back to a malfunctioning of the watchdog for the solid attenuator (see attached error message)
Deacttivated the watchdog for SASE1 solid attenuator. Re-activated it again. |
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Issue, posted by Harald Sinn on 16 Mar 2024, 12:12
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11:15 SASE1/SPB called that they observed and issue with the SASE1 XGM/XTD2: about every 35 seconds the power reading jumps from 4 Watts to zero and
back. It seems to be related to some automated re-scaling of the Keithlyes, which coincides. The fast signal and downstream XGMs do not show this behavior.
The concern is that this may affect the the data collection later today. |
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Issue, posted by Frederik Wolff-Fabris on 20 Mar 2024, 12:41
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BKR called PRC around 06:10AM to inform on vacuum issues at SA1 beamline leading to a lost beam permission for the North Branch.
VAC-OCD found an ion pump in the PBLM / XTD9 XGM presented a spike in pressure that triggered valves in the section to close.
After reopening valves the beam permission was restored; further investigations and monitoring in coming days will continue. Currently all systems |
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Status, posted by Harald Sinn on 10 Apr 2024, 11:55
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Yesterday two motors of the SASE2 seeding mono were damaged. The mono was exchanged in the afternoon and pumped down. Currently, an issue with the vertical
cystal motion is being investigated. The vacuum improved much faster than expected after this intervention, so the hope is that the tunnel can
be searched soon and electrons could go through SASE2 already this afternoon. Watch for updates in the program for SASE2 in the DESY logbook under |