Shift summary, posted by Felix Brausse on 26 Aug 2023, 02:07
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Shift summary the 25th of Aug
Found laser and X-ray spatiotemporal overlap with Bi diffraction peak
Found a diffraction peak from STO nano particles
X-ray
dose test is ongoing |
Strange pulse behavior upstream XGM, posted by Faisal Hammad Mekky Koua on 17 Jun 2023, 07:41 
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- Pulse intensity decreases drastically at XTD2 across the train
- the visualisation of our beam therfore needs to be compensated adjusting transmission
- beam shape and uniformity is different than previous days and it is unclear how much of this is related to real changes in the beam or an effect |
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Day shift summary, posted by Erik Brambrink on 19 Feb 2023, 08:06
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19 Feb 2023, 08:08 Hand over from night shift
Added polarizer in the PAM beam in the optics hutch, reequilibrated reference arm of PAM
19 Feb 2023, 08:09 Darks taken for JF 1 and 2 |
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Shift summary, posted by Erik Brambrink on 08 Sep 2023, 06:22
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Improved the alignment procedure:
Using the pin to make sure of the spatial overlap
SAXS signal is used to make sure
the pin is well centered on the X-ray beam path
YAG is only used in combination with ILM to fix with ~5 um precision the height of the beam
(moving CRLs on laser focus) and the temporal overlap.
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Shift summary, posted by Erik Brambrink on 09 Sep 2023, 07:00
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Data taken from 11 to cryo failure
Beam conditions stable
Timing scan for different energy
Operation stopped
after cryo failure
Cryo jet was heated up then
Improvements of optical diagnostics (far field monitor)
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SASE 3 background heavily impacts our focus, posted by Diogo Filipe Monrroy Vilan e Melo on 25 Oct 2023, 02:43
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Attch 1: We were having trouble focusing at IRU chamber. After multiple attempts the best we could achieve was 2.9-3.1 um beam.
Attch 2: We then wanted to test if this was caused by the SASE 3 background, after them changing from >350 pulses to 1, we saw an instant
improvement of ~0.5um down to 2.3 um beamsize. |
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Shift Summary, posted by Diogo Filipe Monrroy Vilan e Melo on 25 Oct 2023, 06:02
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Staff: DM, CK, KK
X-ray delivery
7.8keV, 2.4mj, stable delivery, homogeneos intra train energy most of the time.
SASE 3 background
Optical |
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Shift summary 25.10.2023, posted by Diogo Filipe Monrroy Vilan e Melo on 26 Oct 2023, 06:48
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Staff: DM, CK, KK, JB, SR (SEC), LW (Uppsala university), MM (GU)
X-ray delivery
7.8keV, 2.4mj, stable delivery, homogeneos intra train energy most of the time.
Optical laser delivery |
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Issue, posted by Chan Kim on 02 Feb 2023, 06:37
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SPB_IRU_DPA/MOTOR issue
X stage looks okay, but Y, AX, and AY values have been changed by 2-3mm. (see attachment 1 and 2)
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Shift summary, posted by Chan Kim on 16 Feb 2023, 07:17
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Shift summary 15.2.2023 (Wednesday)
X-ray delivery
9.3 keV, 1-200 pulses, 1.0 mJ, pulse energy fluctuation due to SA3 tunning & special operation mode (SCS)
Optical |
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Shift summary, posted by Chan Kim on 16 Feb 2023, 23:15
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X-ray delivery
9.3 keV, 1-120 pulses
Optical laser delivery
No Optical Laser
Achievements/Observations |
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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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Shift summary, posted by Chan Kim on 10 Jun 2023, 06:55
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X-ray delivery
12.42 keV, 0.8 mJ/pulse, stable delivery
Optical laser delivery
none
Achievements/Observations |
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Shift summary, posted by Chan Kim on 11 Jun 2023, 07:28
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X-ray delivery
12.42 keV, 0.65 mJ/pulse, low pulse energy but mostly stable delivery
Optical laser delivery
none
Achievements/Observations |
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Shift summary, posted by Chan Kim on 12 Jun 2023, 07:16
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X-ray delivery
12.42 keV, stable delivery with slightly less than 1.0 mJ/pulse (~0.95 mJ/pulse)
Optical laser delivery
none
Achievements/Observations |
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Issue, posted by Chan Kim on 15 Sep 2023, 14:54
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Vacuum issue at XTD2 tunnel which might be triggered by SA1_XTD2_ATT Arm5 (1.2mm thick CVD diamond)
It happened once again at around 3pm. |
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Shift summary, posted by Chan Kim on 13 Oct 2023, 07:06
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X-ray delivery
7.8 keV, up to 260 pulses at 1.1MHz, >4 mJ
Optical laser delivery
PP laser was down since 00:48.
Achievements/Observations |
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Shift summary, posted by Chan Kim on 14 Oct 2023, 04:04
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X-ray delivery
7.8 keV, up to 260 pulses at 1.1MHz, ~3 mJ
Optical laser delivery
PP laser, stable delivery
Achievements/Observations |
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Issue, posted by Chan Kim on 25 Oct 2023, 04:48
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SA3 background is very strong and it affects our NKB (nano KB, Ru coating) focus.
Attachment 1: optimized NKB focus with 1 pulse @SA3 |
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other, posted by Chan Kim on 25 Oct 2023, 06:02
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Issue solved (elog:410) after changing NKB mirror coating to B4C.
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