ELOG OPERATION-2024

28 Sep 2024, 01:31

started with data acquisition for the ptycho experiment with different geometries
started with XPCS measurements of capillaries using the FSSS

issues: beam size changed a bit compared to yesterday (a bit bigger now - most proberly due to the realignment of the mirror suppressing the higher harmonics in the beam)

continued with the evaluation of the XPCS analysis packages
investigated the effect of alignment optimizations and forced misalignments on the contrast directly with the online XPCS tool
checked additional standard samples

**X-ray delivery**

- 6 keV, ~2.8 mJ, stable delivery

**Optical laser delivery**
- ns laser for particle visualization

**Achievements/Observations**
- measured user sample for almost whole day (about 100 runs x 5 minutes)
- Julabo chiller (AGIPD) is still on target (-32 degree)

**Issues**
- MKB Ion pump error (issue fixed after resetting the device)
- NKB focus loosed. Focus reoptimized twice during the d2 shift

**X-ray delivery**

- 6 keV, ~2.8 mJ, continuous beam drift in vertical direction (both XTD2 & XTD9 XGMs)

**Optical laser delivery**
- ns laser for particle visualization

**Achievements/Observations**
- measured sample for almost whole day (about 100 runs x 5 minutes)
- Julabo chiller (AGIPD) is still on target (-32 degree)

**Issues**
- Continuous beam drift in the vertical direction: NKB focus was optimized almost every 2 hours
- Sudden intensity drop in SA1 when SA2 or SA3 changes the number of pulses.

Worked on the XPCS analysis packages
measured the TetraPack samples
continued with the levitation device

issues:

Jungfrau detector had an error - R. Shayduk restarted the device - it should be power cycled as described in the manual
The bunch number selctor does not work - the system didn't accepted 150 pulse but moved it back to 30 pulses - the machine switched off the user selection - should be followed up tomorrow

X-ray delivery

6 keV, ~2.8 mJ, continuous beam drift in both direction

Optical laser delivery

ns laser for particle visualization

Achievements/Observations

DAta collection for CDI
Julabo chiller (AGIPD) is still on target (-32 degree)

Issues

Continuous beam drift in the both direction: NKB focus was optimized almost every 2 hours

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 CRLs aligned

X-ray delivery

12.4 keV, ~1.4 mJ

Achievements/Observations

Beam was focused on a YaG, alignment finished up to JF4M

12.389keV, HXRSS, 1-400+ bunches, 450uJ

Seeding alignment
Beamline alignment (Mirror + foccussing)
Measured energy and moved it the requested value
Cryos for sample and monochromator are prepared
Aligned DES spectrometer
Started with DCCM characterization (440)

X-ray delivery

12.5 keV, ~1.6 mJ

Achievements/Observations:
Collected almost 40 runs of the priority sample with 7 pulses per train using the Polypico injection system.

Issues:
Jungfrau controller issue when changing back to single cell adaptive to collect powder data with new geometry (solved together with DOC).
Pipeline issue after requesting single cell correction - still the same bug in the calibration pipeline, the pipeline has to be re-instantiated after the change.

X-ray delivery

19 keV, ~550 uJ, 1 - 128 pulses, stable delivery

Optical laser

N/A

Achievements/Observations

Sample test with both setup
Siemens star resolution measurement

Issues

No major issue

X-ray delivery

19 keV, ~450 uJ, 1 - 128 pulses, stable delivery

Optical laser

N/A

Achievements/Observations

Lots of data collection

Issues

No major issue today

X-ray delivery

19 keV, ~ 400 - 450 uJ, 1 - 128 pulses, stable delivery

Optical laser

N/A

Achievements/Observations

Lots of data collection, 659 runs total, lot of nice results, first obsertvations of 3D printing process

Issues

No major issue today

machine runs at 17 keV with about 1.2 mJ

achievements:
check of the Zyla & Shimadzu and trigger optimization or 1.1 MHz
installation of FEL shutter and optimization of position and opening time
optimization of instrument macros

issues
DAQ crashed when shimadzu is running with 2.2 MHz and 256 images - DOC worked on the problem in collaboration with DA as well as ITDM OCD. They will follow up on the problem when ITDM checked the issue (redmine ticket #214244)

optimization of the timing of the involved components (laser, cameras, FEL)
generation of the first bubbles in water

issue
several times, the beam lost the position in the tunnel - it disappeared on the last tunnel imager. based on the motor parameter of the mirrors, no motion caused this. the position information of the XGM also did not show any strange values

data collection of bubbles in elastomers (good progress)

issue: beam loss in the tunnel during the day - experts checked the situation and the situation improved during the evening

successful measurements of elastomer, gelatine & bio samples

issue:
beam loss at about 2:45 due to communication issues with accelerator modules

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

487 nm ns laser for pump-probe
800 nm PP laser for jet illumination, stable delivery

Achievements/Observations

Collected PP (pump-probe) dataset with 5 us time delay more than 12 hours
Jet and data collection was stable most of the time

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.

Optical laser delivery:
PP laser for illumination

Achievements/observations:
- AGIPD1.2 tests with different trigger delays, gain modes, signal levels ...
- inhouse proghram completed

Issues:
Some sample delivery issues

X-ray delivery

8.951 keV, 1.6 mJ

Achievements/Observations

Beam trajectory and focusing established for 8.951 keV
HIREX inserted for energy reference for calibration tomorrow
Temporary beamstop verified position for direct beam.
Mirror tank inserted to beam path