Shift summary, posted by Chan Kim on 29 Sep 2024, 00:07
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**X-ray delivery**
- 6 keV, ~2.8 mJ, stable delivery
**Optical laser delivery** |
Stability Issue, posted by Chan Kim on 29 Sep 2024, 22:29 
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X-ray beam is continuously drifting in the vertical direction (XTD9_XGM)
It affects our NKB focus and focused beam is also drifting continuously. |
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Shift summary, posted by Chan Kim on 30 Sep 2024, 01:13
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**X-ray delivery**
- 6 keV, ~2.8 mJ, continuous beam drift in vertical direction (both XTD2 & XTD9 XGMs)
**Optical laser delivery** |
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Shift summary, posted by Chan Kim on 24 Oct 2024, 06:51
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X-ray delivery
12.4 keV, ~1.4 mJ
Achievements/Observations
Beam is through the inline mic
Flight tube vacuum optimized
Beam trajectory up to JF4M manually optimized
EHC |
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Shift summary, posted by Chan Kim on 25 Oct 2024, 05:51
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X-ray delivery
12.4 keV, ~1.4 mJ
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(Resolved) Issues with DAQ, posted by Björn Senfftleben on 30 Mar 2024, 00:17
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We had some trouble with the DAQ. It was not able to start runs properly.
We got the following error messages:
initially: |
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start of shift - status, posted by Antje Trapp on 10 Apr 2024, 16:35
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Starting shift with mirror motor calibration:
- beam is centered on FEL imager
- pblm in XTD9 is inserted |
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start of shift - status, posted by Antje Trapp on 10 Apr 2024, 16:35
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Starting shift with mirror motor calibration:
- found solid attenuator 0.5mm silicon inserted
- beam is centered on FEL imager |
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SASE1 MIRROR MOTORS CALIBRATED, posted by Antje Trapp on 11 Apr 2024, 21:54
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Dear all,
we calibrated the mirror vertical motors to their geometrically neutral.
Please be aware that saved values for beamline settings may no longer be valid. This mainly applies to the vertical motor positions, but will |
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M1 - M2 - M3 euler fine tuning geometriy parameters, posted by Antje Trapp on 19 May 2024, 14:49
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We fine tuned geometry parameters for linear effects on X motion (parallel offset) for all three mirrors.
dTz was corrected for M2 and M3 to -6.5mm (same geometry)
dTz was corrected for M1 to +6mm |
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HED 6keV after Euler MDL, posted by Antje Trapp on 19 May 2024, 15:20
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SASE2 end of shift summary, posted by Antje Trapp on 22 Jul 2024, 15:20
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Beam is now aligned back to HED for hand-over to Naresh (see picture)
points achieved:
-vibometer measurements on M2 at high energy, 2,1 and 3 mrad setting |
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SASE3 end of shift summary, posted by Antje Trapp on 22 Jul 2024, 15:27
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this morning, ZZ was done together with Sylvia Huynh (EEE) to solve softmono pre-mirror motor issue https://redmine.xfel.eu/issues/177392
The issue was solved and also mechanical functionality of the stage was checked.
After ZZ, the beamline remained interlocked. Hutches will be searched and closed tonight to allow final checks on Tuesday |
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M1 Rz damaged - DO NOT MOVE!!!, posted by Antje Trapp on 30 Aug 2024, 13:02 6x
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What has happened:
During euler motion calibration of M1, we were driving the vertical motors by a few mm back and forth. At some point, the Rz motor went into error,
as we attempted to go further in negative direction. Resetting the axis several times did not solve the problem. The vertical motors were then moved to |
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Issue, posted by Andreas Koch on 14 May 2024, 09:56
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EPS issue for Transmissive imager SA1 (OTRC.2615.T9) w.r.t Operation eLog #96
The motor screen positions w.r.t. the EPS switches had been realigned (last Wednesday 8th May), tested today (14th May) and the EPS is again
enabled for the different beam modes. All is back to normal. |
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SA1 status, posted by Andreas Koch on 26 Nov 2024, 09:47
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Concerning damage of the SA1 FEL imager, Operation-2024 eLog #206
The screen position of the YAG screen - when pressing the screen selection button - has been moved by 1 mm so that the damaged area is out of the |
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Issue, posted by Andreas Galler on 01 May 2024, 16:39
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840 pulses not possible at SXP due to big brother settings for the EPS Power Limit rule. The minimum pulse energy was assumed to be 6 mJ while the actual
pulse XGM reading is 550 uJ.
Solution: The minimum assuemd pulse energy had been lowered from 6 mJ to 2 mJ. This shall be reverted on Tuesday next week. |
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Attention, posted by Andreas Galler on 11 Aug 2024, 00:13
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EPS Interlock change for Mode30:
the 3 HIREX Interlock conditions had been disabled
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Stability Issue, posted by Alexey Zozulya on 05 Dec 2024, 19:47
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Today we have observed multiple large disturbances to beam stability. These can be characterised by large jumps in the horizontal beam position, which
at its extreme amounts to a loss of beam from our behalf. M2 mirror feedbacks are able to return the beam to the initial position after ca. 10 minutes.
Beam jumps have been approximately 1hr apart. We do not observe the beam on the XTD6 tunnel imager in this case, but do observe good lasing quality on |
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Shift end, posted by Adam Round on 31 Mar 2024, 23:20
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X-ray delivery
12.72 keV, 10Hz, ~1.4 mJ/pulse, some beam drift in the horizontal direction observed (probably mirror related)
Optical
laser delivery |