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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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 |
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Issue, posted by Harald Sinn on 24 Jul 2024, 10:26
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In SASE2 undualtor cell 10 has issues. Suren K. will do a ZZ at 11:30 to fix it (if possible). Estimated duration: 1-3 hours.
Update 12:30: The problem is more severe than anticipated. Suren needs to get a replacement driver from the lab and then go back into the tunnel
at about 14:00 |
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Issue, posted by Harald Sinn on 24 Jul 2024, 11:35
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The control rack of the soft mono at SASE3 has some failure. Leandro from EEE will enter the XTD10 at 12:00.
Beam will be interupted for SAS1 and SASE3.
Estimate to fix it (if we are lucky) is one hour. |
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Issue, posted by Harald Sinn on 27 Jul 2024, 09:10
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SASE1: Solid attenuator att5 is in error. When it is tried to move it out, the arm lifts, but does not reach the final position before the software time-out.
We increased the software time-out from 4 seconds to 7 seconds, which didn't help. We suspect that there is a mechanical problem that prevents
the att5 actuator to reach the out position. |
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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 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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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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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 Frederik Wolff-Fabris on 25 Apr 2024, 21:11
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V0 valve for SA2 closed as the pump P22090I at HED branch enters in wrong state. This closed nearby vacuum valves for HED branch and consequently
V0. Vacuum levels at the section remained in 10^-9 all time.
Thanks to VAC-OCD Denis Finze we removed this pump signal from interlock to allow operation in SA2 at MID branch. Further investigation will |
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SA2 status, posted by Frederik Wolff-Fabris on 04 Nov 2024, 15:07
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Dear MID colleagues, Svitozar (PRC), Bolko and Shan (RCs),
This morning we faced the situation where MID was limited to 400 pulses (mode M) via the EPS signals. The current RF window set at the machine
allows to the requested 450 pulses. |