Late shift summary 06.05.2023, posted by Sergii, Phuong on 06 May 2023, 23:15
|
Achivments:
-Measure delay scans at two PPL fluencies on smaller grain size.
-Moved DSSC back to 1.45 m sample - detector distance |
|
morning shift summary, posted by Giuseppe Mercurio on 06 May 2023, 14:42
|
achievements
finished recording dataset at 20degree
changed for sample with smaller grains at normal incidence and moved DSSC to 1.2m
OL
induced some change of the sample but the scattering ring remains and then stabilize
started collecting data
problems |
|
Shift summary, posted by Tokushi Sato on 06 May 2023, 06:55
|
X-ray delivery
12.4 keV 200 pulses / train, relatively stable intensity ~1.2 mJ / pulse
Optical laser delivery
420 nm PP laser
ns laser for jet imaging
Achievements/Observations |
|
night shift summary, posted by Giuseppe Mercurio on 06 May 2023, 06:53
|
achievements:
- measured delay scans at sample tilted by 20 degree
problems: |
|
night shift summary, posted by Giuseppe Mercurio on 06 May 2023, 06:53
|
achievements:
- measured delay scans at sample tilted by 20 degree
problems: |
|
Shift summary, posted by Jan-Etienne Pudell on 06 May 2023, 02:19
|
- We get stable x-ray delivery with 130µJ.
- We could move the detector succesfully in and out of the LFoV configuration! |
|
Late shift summary 05.05.2023, posted by Sergii, Phuong on 05 May 2023, 23:00
|
Achivments:
-Measure time scans with magnetic field in opposite directions
Problems |
|
SA2 status, posted by Jan Gruenert on 05 May 2023, 16:51
|
MID reports an observation that is particular to the operation at the currently high photon energy of 23 keV
MID inserted the XTD6-MID-preabsorber and assumed that it completely stops the beam.
They acquired AGIPD detector images as dark frames but were surprised to still find some weak background signal (not dark). |
|
morning shift summary, posted by Giuseppe Mercurio on 05 May 2023, 14:56
|
achievements
with help from LAS OCD, we got the PPL synchronized again with optical lock and close to the initial t0 on the sample
we found
t0 on the sample again
collected data with magnetic field
initial setup of damnit/amore for semi-automatized data processing
problems |
|
Shift summary, posted by Giuseppe Mercurio, Diego, Martin, Amina on 05 May 2023, 06:33
|
achievements:
inserted the magnet and measured delay scan at the maximum magnetic field with opposite directions
data analysis showed that
runs measured during the afternoon/evening led to sample degradation (the sample shows a dark spot, change in the scattering signal is also cearly visible)
corrected |
Re: Shift summary, posted by Giuseppe Mercurio on 05 May 2023, 07:23 
|
Actually, it looks like the sync was lost shortly before 23h last night as the jitter went to 0fs and recovered at 1am when a new sync search probably
started.
Giuseppe |
|
Shift summary, posted by Tokushi Sato on 05 May 2023, 06:44
|
X-ray delivery
12.4 keV 200 pulses / train, relatively stable intensity ~0.8 mJ / pulse
Optical laser delivery
420 nm PP laser
ns laser for jet imaging
Achievements/Observations |
|
Shift summary, posted by Jan-Etienne Pudell on 05 May 2023, 02:16
|
X-ray delivery:
- stable at 120µJ, mostly 63 pulses
- 1:30h downtime |
|
Issue, posted by Tokushi Sato on 05 May 2023, 00:50
|
| Laser synchronization is gone, unlocked from 04.05.2023, 22.47. E-mail was sent to lbsync-expert@desy.de and c.c. to las-op@xfel.eu. |
|
Late shift summary 04.05.2023, posted by Sergii, Phuong on 04 May 2023, 22:58
|
Achivements:
-Cooling down the sample. Sample is at 14K
-Taking time resolved data at 70% 800 nm, -5 ps - 65 ps |
|
morning shift summary, posted by Loic Le Guyader on 04 May 2023, 14:34
|
achievements
we change the DSSC timing to record the first pulse
sample was getting damaged with 26mJ/cm2 and scattering of the sample
was changed so we used lower fluence to observe t0 on the sample
changed to 2nd mono order, 20% GATT transmission and exit slit to 0.3 mm. The |
|
Shift summary, posted by Tokushi Sato on 04 May 2023, 06:41
|
X-ray delivery
12.4 keV 200 pulses / train, relatively stable intensity ~0.8 mJ / pulse
took some time in changing X-ray energy (from 19.16
keV to 12.4 keV)
Optical laser delivery |
|
Shift summary, posted by Jan-Etienne Pudell on 04 May 2023, 01:22
|
Shift summary:
- get the beam with 23keV and 120µJ
- falignment of mirrors m1 and m2 on the pt stripe at 23keV |
|
Late shift sumamry 03.05.2023, posted by Sergii Parchenko on 04 May 2023, 00:52
|
Achivments:
- X-ray and Laset spot size calibration
- Course timing check |
|
SA1 status, posted by Jan Gruenert on 04 May 2023, 00:07
|
SASE1 status:
First shift switchover this week at 23h from FXE (19.5 keV) to SPB/SFX (12.4 keV) with issues.
No immediate lasing at 12.4 keV with standard procedures / files, then tuneup using FEL imager (CBor) in multibunch. Wrong pointing (far off |
|
Status, posted by Jan Gruenert on 03 May 2023, 13:01
|
The machine tuning over the night had not yet accomplished fully satisfactory beam conditions mainly at the high photon energies for SA1 and SA2,
therefore tuning continued during WED morning.
Beam was handed over to SCS (SASE3) at 9h with about 2.4mJ at 2.5 keV. |