X-ray delivery

• 1-202 pulses, 564, 282, 141 kHz, stable delivery

Optical laser delivery

• 800nm, 50 fs, 282 kHz, stable delivery

Achievements/Observations

• Alignment for Pump-probe experiment was finished
• Sample was tested

Issues

• No major issue today

X-ray delivery

• 1-202 pulses, 564, 282, 141 , 70.5 kHz, stable delivery

Optical laser delivery

• 800nm, 50 fs, 282 kHz, stable delivery 

Achievements/Observations

• Resasnable amout of data was collected
• Sample was tested

Issues

• No major issue today

X-ray delivery

• 1-202 pulses, 564 kHz, stable delivery
• Beam was down from 06:08

Optical laser delivery

• 800nm, 50 fs, 282 kHz, stable delivery 

Achievements/Observations

• Resasnable amout of data was collected

Issues

• No major issue today

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

• 420 nm PP laser
• ns laser for jet imaging

Achievements/Observations

• M1 & M2 offset mirror optimized
• NKB focus roughly optimized (we used defocused X-ray beam, about 2um)
• Collected several runs for inside nozzle pump excitation project (both adaptive gain and fixed MG modes)
• Nozzle damage with PP laser tested (before and after the night shift)

Issues

• AGIPD FPGA (2nd hemisphere) issue (requied a power cycle)

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.

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

• M1 & M2 offset mirror optimized again (not really optimum but acceptable)
• NKB focus checked and defocused to have about 2um beam
• Collected a few dark runs and about 30 runs with PP laser in adaptive gain mode

Issues

• AGIPD Fixed MG mode issue
• PP-laser sync issue, but it was solved quickly, thanks to Lbsync team
• Beam pointing in the FEL Imager was quite off in the beginning of the shift 
• Hit rate too low (~0.3%)

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

• NKB focus checked and defocused to have about 3um(H) x 6um(V) beam
• Collected a few hours data with PP laser on both jet and nozzle excitations (AGIPD in adaptive gain mode)

Issues

• IRU Chamber LED was ON until 2:51am 
• Nozzle damage found after ~1 hour measurement 
• Hit rate seems too low still (less than 1%)
• Nozzle exploded close to the end of the shift 

X-ray delivery

• 9.3 keV, ~1 mJ, 1-30 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Direct beam trajectory alignment
• Alignemnt of IRD and microscopy screens
• rough alignment of XPD WFS

Issues

• beam down for sometime
• AGIPD slow data configuration issue, solved by DRC+Cal OCD

X-ray delivery

• 9.3 keV, 800 uJ, 1-200 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• CRL chamber alignment
• CRL lens stack alignment
• XPD WFS alignment with CRL focused beam

Issues

• Some of the CRL lens stacks needs realignment

X-ray delivery

• 9.3 keV, 800 uJ, 1-200 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• HWFS direct beam measured
• CRL focus measured with YAG screen and camera
• Setup for CRL heating measurement installed

Issues

• Difficulties with operation and syncrhonization of FLIR IR camera

X-ray delivery

• 10.7 keV, 1.2 mJ, 1-200 pulses, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Crystal alignment for X-ray microscopy except one crystal
• Sample camera and Cu mesh were aligned to X-ray position

Issues

• We found strange strip on the beam in XTD0 screen

X-ray delivery

• 9.3 keV, up to 178 pulses at 564 kHz, 3.7  mJ, stable delivery
• Beam delivery was started from 19:00

Optical laser delivery

• PP Laser, 800nm, 50 fs, up to 90 pulses @ 282 kHz

Achievements/Observations

• Alignment was completed within 3 hours including T0
• Some data collection with fixed target

Issues

• XTD9 safety shutter was closed

X-ray delivery

• 9.3 keV, up to 185 pulses at 564 kHz, 3.7  mJ, beam intensity drop, missing last 10-20 pulses in train sometime

Optical laser delivery

• PP Laser, 800nm, 50 fs, up to 90 pulses @ 282 kHz

Achievements/Observations

• Alinment for TR-SFX and PAM
• Data collection for IHR

Issues

• Beam intensity was not that stable
• Strange scattering from amorphous sample and powder diffraction were appeared during data collection

X-ray delivery

• 9.3 keV, up to 185 pulses at 564 kHz, 3.7  mJ, stable delivery

Optical laser delivery

• PP Laser, 800nm, 50 fs, up to 90 pulses @ 282 kHz

Achievements/Observations

• Alinment for TR-SFX
• Data collection in dark state and excited state at 203.5 ns

Issues

• MDL devices and macros on macrosever2 were dead around 19:30, took more than 2 hours for recovery. 
• Dark calibration issue

X-ray delivery

• 9.3 keV, up to 185 pulses at 564 kHz, 2.7  mJ, stable delivery

Optical laser delivery

• PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz

Achievements/Observations

• Alinment for TR-SFX and data collection

Issues

• AGIPD vacuum gauge was in error, unplug and plug in fixed this error

X-ray delivery

• 9.3 keV, up to 185 pulses at 564 kHz, 2.4  mJ, stable delivery

Optical laser delivery

• PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz

Achievements/Observations

• Alinment for TR-SFX and data collection

Issues

• Nozzles were clogged a lot, crystals were formed on catcher cone.

X-ray delivery

• 9.3 keV, up to 185 pulses at 564 kHz, 2.3  mJ, stable delivery

Optical laser delivery

• PP Laser, 800nm, 50 fs, up to 62 pulses @ 188 kHz

Achievements/Observations

• Alinment for TR-SFX and data collection

Issues

• Karabo did not work sometime, lost more than 1 hours

X-ray delivery

• 0.5 mj, improved to 1.1 mj xray energy in the evening

Optical laser delivery

• 50 fs, 860 nm as fundamental wavelength, 188 kHz
• ns for illumination,

Achievements/Observations

• Aligned the instrument to 9.3 keV
• Aligned the PPL laser
• Time zero PPL
• Measured sample, dark runs, including testing different sample conditions (filtered vs not filtered or lower cutoff)
• Measured TR-SFX

Issues

• Low xray energy, BKR improved it afternoon, from 0.5 to 1.1 mj, hopefully we could still get better the following days
• PP-laser AMPHOS issues
• The focus at IRU in the evening had issues, we had to redo the alignment partially. We also had to ask BKR to improve the beam alignment at FEL imager.

X-ray delivery

• 1.1 mj, 564 kHz, 93 pulses, stable delivery

Optical laser delivery

• 50 fs, 860 nm as fundamental wavelength, 188 kHz
• ns for illumination,

Achievements/Observations

• Lots of data collection for TR-SFX
• Tried many samples and optimazation

Issues

• Beam fluctuation aorund 23 : 00
• Low hit rate. tried to improve, better than before.

X-ray delivery

• 1.1 mj, 564 kHz, 93 pulses, stable delivery

Optical laser delivery

• 50 fs, 860 nm as fundamental wavelength, 188 kHz
• ns for illumination,

Achievements/Observations

• Lots of data collection for TR-SFX

Issues

• Sample was accumulated on catcher and strong diffraction was observed, need to vent chamber and clean it, but it happned end of beamtime, we decided to finish experiment