Shift summary, posted by Raphael de Wijn on 30 Apr 2023, 21:59
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SPB/SFX In-house research 4978 shift 3 - end
X-ray delivery
9.3 keV 352 pulses / train, relatively stable intensity ~1.9 mJ / pulse
beam down ~30 min
Optical |
Stability Issue, posted by Tommaso Mazza on 30 Apr 2023, 09:01 
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changing SA3 mono from grating to blank while having the und to mono synchronization running apparently caused the und photon energy to change to 680eV.
the synchronization MDL went into pink-disable when changing mirror settings, so this change in photon energy should not have occurred.
After going back to 940eV, the SASE level did not come back. BKR tried to tackle this for some while until they asked for intervention of the |
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Shift summary, posted by Richard Bean on 29 Apr 2023, 22:00
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SPB/SFX In-house research 4978 shift 2
X-ray delivery
9.3 keV 202 pulses / train, relatively stable intensity 2.0 mJ / pulse at start of train, ~30% decrease in intensity across train
BKR |
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Shift summary, posted by Richard Bean on 28 Apr 2023, 21:55
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SPB/SFX In-house research 4978
X-ray delivery
9.3 keV 202 pulses / train, relatively stable intensity 1.9 mJ / pulse, some decrease in intensity across train
Optical |
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Attention, posted by Naresh Kujala on 28 Apr 2023, 16:08
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FXE (Fred) confirmed that they don't use beam for night shifts from Friday to Sunday.
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Issue, posted by Naresh Kujala on 28 Apr 2023, 13:00
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- Received a call from machine RC (Sergey Tomin)
- There is an issue with DOOCS to Karabo bridge, Tim and DESY experts are looking into this and came to the conclusion that it can't be resolved
now and need more time something like 1 week. (probably next week). Due to this PySpectrometer for SA3 is not available, as SQS would like to set up a |
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Issue, posted by Naresh Kujala on 28 Apr 2023, 11:21
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Issue with SA1_XTD9_PBLM and it is stuck.
Hi All,
After discussion with SPB, they will slightly move the PBLM screen where they don't see any distortion in the beam and are willing to continue |
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Shift summary, posted by Richard Bean on 27 Apr 2023, 23:33
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SPB/SFX PCS user proposals (day 1)
X-ray delivery
9.3 keV, 1600 uJ/ pulse
Achievements/Observations |
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HED Full Day Summary 26.04., posted by Alejandro Laso Garcia on 27 Apr 2023, 07:51
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Morning shift:
- Tried to align the fiducial fiber in IC1 for the streak cameras, however it was unsuccessful.
- The karabo device for the SOP had to be restarted. Crosschecked that all the timings were still correct. |
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Shift summary, posted by Chan Kim on 27 Apr 2023, 00:07
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SPB/SFX User Proposal 3333 Shift 2 Summary
X-ray delivery
9.3 keV, 1.7 mJ, 202 pulses @ 564 kHz |
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HED Full day shift summary 25.04., posted by Alejandro Laso Garcia on 26 Apr 2023, 07:55
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Morning shift:
- First thing in the morning ~7 am, the MDL in the SASE 2 topic were down. Even the watchdog which prevented us from moving SA2 attenuators.
DOC quickly resolved the issue (10 min). |
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Shift summary, posted by Richard Bean on 26 Apr 2023, 01:03
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SPB/SFX User shift 1 3333
X-ray delivery
9.3 keV, 1.7 mJ, 202 pulses @ 564 kHz |
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night shift summary and end of beamtime, posted by Andreas, Martin on 24 Apr 2023, 15:16
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achievements:
- finished SAXS data recording till 8am on time-resolved skyrmion nucleation and field dependence
- the setup is sensitive to beam transport drifts due to the closed hor-SLIT and the pinhole in FFT. were able to recover beam intensity by simple |
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night shift summary and end of beamtime, posted by Andreas, Martin on 24 Apr 2023, 15:16
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achievements:
- finished SAXS data recording till 8am on time-resolved skyrmion nucleation and field dependence
- the setup is sensitive to beam transport drifts due to the closed hor-SLIT and the pinhole in FFT. were able to recover beam intensity by simple |
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shift summary, posted by Ulrike Boesenberg on 24 Apr 2023, 02:45
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Beam came back quickly after cryo-incident with ok seeding performance (not very stable).
Finish 3381-Pudell beamtime with
SRO/STO samples at time delays and laser fluences.
Decided not to scan the HXRSS energy but stay at current position
Mount samples |
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last late shift UP3463, posted by Giuseppe Mercurio, Laurent Mercadier on 23 Apr 2023, 23:38
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Achievements
Beam transport
Coarse and fine timing
XAS on Co
Aligned HSLIT, pinhole, camera beamstop
Characterize
FEL beam size and position on curved grating
PPL Power measurement
Fluence scan on sample of optical laser and FEL to determine good |
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late shift summary, posted by Laurent Mercadier, Giuseppe Mercurio on 22 Apr 2023, 23:32
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Achievements
Work on laser to improve the beam profile and reduce pointing. Apertured the beam upstream of focusing lens and changed to f=750 mm.
Significant improvement.
Characterized beam size, found positions of photodiode, antenna
Check coarse timing with reference
Aligned |
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Shift summary, posted by Ulrike Boesenberg on 22 Apr 2023, 21:57
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Quick aligment of the instrument with quiet good HXRSS performance after cryofailure
Checking of t0 to the optical PP laser
Test of energy scanning macro (Undulator + HXRSS) |
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Shift summary, posted by Romain Letrun on 21 Apr 2023, 04:33
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X-ray delivery
12.0 keV, 1.3 mJ, 1-168 pulses @ 564 kHz
Cryo issue at 3:33
Optical laser delivery
1030 nm compressed, THG.
Stable delivery.
Achievements/Observations |
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Night shift summary 20-21.04.2023, posted by Robert Carley on 21 Apr 2023, 04:13
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Activities:
Investigated SAXS scattering instability and found it to come from the pointing variation of the PPL
Recorded microscope images
of the PPL spot of the pBN to quantify the pointing for different spot sizes
Enlarged the beam and measured pumped SAXS. Results seem better |