Status, posted by Naresh Kujala on 07 Oct 2024, 16:34
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Desy Laser group has fixed the issue about the laser Synchronization.
https://ttfinfo.desy.de/XFELelog/show.jsp?dir=/2024/41/07.10_M&pos=2024-10-07T14:51:12
Naresh |
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Shift summary, posted by Motoaki Nakatsutsumi on 24 Feb 2024, 11:58
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Shift summary 2024-02-23 07:00 - 2024-02-24 10:00
We got self-seeding at 8.5 keV very quickly after changeover from 10.5 keV operation finished at 2024-02-23 07:00.
Pulse energy ~ 600 uJ. |
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Shift summary, posted by Motoaki Nakatsutsumi on 25 Feb 2024, 14:47
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Shift summary for 2024-02-24 from 07:00 to 2024-02-25 at 14:00:
Self-seeding at 8.5 keV, with approximately 500 μJ per pulse. Following re-tuning around 10 am on the 25th, the energy per pulse increased
to around 600 μJ. |
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Shift summary, posted by Motoaki Nakatsutsumi on 26 Feb 2024, 14:32
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Shift summary for 2024-02-25 from 11:00 to 2024-02-25 at 14:00:
Self-seeding at 8.5 keV, with approximately 500 μJ per pulse.
Overall, the performance of x-ray self-seeding remains good, and users are happy. Pointing stability is also exceptional. However, enhancing |
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Shift summary, posted by Marcin Sikorski on 05 Mar 2024, 07:41
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10 keV beam
Detector: JUNGFRAU in the burst mode (16 memory cells)
Achievements:
multiple sfx data sets (lysozyme)
with 4 and 8 pulses (at 1.1MHz) per exposure taken
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Shift end, posted by Marcin Sikorski on 08 Apr 2024, 06:37
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In-house/commissioning beam time summary night 5
X-ray delivery:
12.7 keV, up to 128 pulses at 0.5MHz, ~1.3 mJ, one very short beam down. |
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Shift summary, posted by Konopkova Zuzana on 02 Feb 2024, 12:40
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beam parametes: 8.5-9 kev, 1.2 mJ, 1-2 pulses
HED trajectory established from XRO setpoint, shape and transmission optimized
monochromator aligned
5
sets of CRLs including nano-focus aligned
ZZ yesterday morning to fix cameras, connect motors..
DAQ rolled back to legacy version, |
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Experiment summary, posted by Konopkova Zuzana on 13 Feb 2024, 08:55
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*Achievements :
- Generally rather successful with very high quality beam parameters
- We had a nearly steady 800 uJ+ HXRSS flux during the user run and ~ 4mJ SASE during the setup at HED. |
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Experiment summary, posted by Konopkova Zuzana on 05 May 2024, 00:25
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proposal 5700 finished on 04.05. The experiment used 352 pulses at 4.5 MHz and 18 keV to X-ray heat pressurized samples in diamond
anvil cells. Overall succesful on several samples.
Issues:
the requested 20.5 keV photon energy had too low pulse intensities
so we had to go down to 18 keV
pulse energies at 18 keV (300-400 uJ) were insufficient for some samples
the ramp in pulse envelope |
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Shift summary, posted by Konopkova Zuzana on 27 May 2024, 06:41
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beam parameters: 2 colors at around 6.5 keV, 1 pulse
achievements:
user program continues with data acquisition at slightly varying photon energies (tens of eV both colors simultaneously) and at different delays |
M3 calibration, posted by Kelin Tasca on 10 Apr 2024, 17:03 
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- M3 TX moved to 0 in steps of 1 mm and beam on FXE Pop-In corrected with M3 RY (+) and M2 RY
- Started calibration with M3 Rz in steps of 0.5 (+) and corrected with M2 RY and RZ to find a position with a minimum of parasitic motion
- Iterations with M3 TY |
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Compensation of M2 RY motor for the case of Piezo off, posted by Kelin Tasca on 18 Jun 2024, 13:03
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We plan to put the piezos of M2 off, in the (unprobable) case that this is the reason of the "jumps" in SASE3 trajectory.
Therefore, I measured the change on RY and RZ motors, to correct all the positions
Fig 1: initial position, Motors Ry=10.5425 and RZ=-14.7200 Piezo Ry =5 and Rz=5 |
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Shift summary, posted by Jörg Hallmann on 03 Feb 2024, 23:51
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goals achieved:
alignment of the beam in tunnel and hutches including refinement of the beam in the center of rotation
check of cameras and optical components |
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Shift summary, posted by Jörg Hallmann on 05 Feb 2024, 23:10
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check of the optimized focussing options at 10 keV using only one arm in CRL2 - results still to be evaluated
successful check of the mirror chamber in the experiment hutch of MID - it was possible to reflect the direct beam down and use it under a shallow
angle on the sample position |
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Shift summary, posted by Jörg Hallmann on 29 Feb 2024, 02:41
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Stable seeding with 1mJ + 400mJ SASE
HIREX triggered interlock when all attenuators are removed
successful test of nano focusing setup |
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Shift summary, posted by Jörg Hallmann on 01 Mar 2024, 06:30
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Shift summary (Feb 29th):
Stable seeding with 1mJ + 400mJ SASE
Alignment of Split and Delay Line |
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Shift summary, posted by Jörg Hallmann on 25 Apr 2024, 01:50
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instrument alignment including NaFos, DES spectrometer, diamond detector, PUMA & test samples
seeding makes a good impression based on the DES spectrometer |
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Shift summary, posted by Jörg Hallmann on 27 Apr 2024, 02:11
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optimized the FEL energy on the absorption edge of Iridium
measurements on the SDW
of Chromium with max magnetic discharges of the PUMA at different attenuations
changed the sample from Chromium to user samples
issues:
energy scan not efficiently working
poor seeding quality in long FEL trains |
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Shift summary, posted by Jörg Hallmann on 13 Jun 2024, 01:46
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alignment of the instrument including collimation and beam shaping
test of the tempus detector using standard samples with different rep rates, intensities & # of pulses
start commissioning of the PhotonArrivalMonitor (temporal & spatial overlap, white light spectrum) |
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Shift summary, posted by Jörg Hallmann on 14 Jun 2024, 01:53
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continue with Tempus tests
continue with PAM commissioning (first results of the working device at MID)
comments: |