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 

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.

X-ray delivery

• 7 keV, 2.1 mJ, stable delivery

Optical laser delivery

• None

Achievements/Observations

• M1, M2 pre alignment for this weeks beamtime
• Checked the beam trajectory through MKB mirrors after stripe change

Issues

• It seems that with wider funnel for the catcher, the YAG is not reaching the X-ray beam

Note: At 7 keV with 100 pulses, and full beam we were at 2.2 W average power.

X-ray delivery

• 7 keV, 202 pulses, 564 kHz, ~1.3 mJ, stable delivery

Optical laser delivery

• None

Achievements/Observations

• Collected a few NQO1 runs (no mixing) in Adaptive and FixedMG with the Ros setup, good diffraction
• Difficult to reach droplet synchronisation

Staff:JK, RDW, AR

X-ray delivery

• 7 keV 202 pulses 1.7mJ stabel across train and throughout the shift

Optical laser delivery

• N/A

Achievements/Observations

• faster changover and alignment
• almost 6 hours of data aquisition - many good hits observed
• strong diffraction in Hits required transmission to be reduced to 34%

Issues

• maintaining synchronnisation for droplet overlap proved difficult effective hit rate of 0.3% observed
• hits observed in beats as timing passed though overlap quite often - some periods where we could see hits in nearly every train but this could not be maintained.

X-ray delivery

• 7 keV 202 pulses 1.6mJ stabel across train and throughout the shift
• Beam down at 7am again, power glitch same as yesterday

Achievements/Observations

• faster changover and alignment
• YAG on nozzle worked
• collected data the droplets in oil sample delivery method - many good hits observed
• still working on the synchronisation with the x-ray pulses

Shift summary for 26.9.2023

X-ray delivery

• 6.3 keV, ~4 mJ, 1-352 pulses at 1.13 MHz
• Great performance and stable delivery with few minor interruptions

Optical laser delivery

• See issues

Achievements/Observations

• Aligned MKB trajectory to 1.5m detector distance configuration
  • Some work can still be done on the background
• Scattering laser setup
• A few runs with silver cubes taken at the end, with some time borrowed from FXE
• Good focus with MKB B4C strip

Issues

• Optical laser not available
• Historical data from some devices unavailable in Karabo. Solved by DOC

Shift summary for 27.9.2023

X-ray delivery

• 6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz

Optical laser delivery

• PP laser, 1030 nm, 226 pulses at 1.1 MHz, delivered from 9:45 on and was stabilizing over the day
• ns laser for rayleigh scattering, stabe delivery

Achievements/Observations

• Aligned MKB trajectory and optimzed background
• Scattering laser aligned with X-rays references and overlaped with particle beam
• Few runs with sucrose while trying to optimize injection

Issues

• PP laser was still drifting in energy and pointing, better stabilized towards the end of the shift
• Difficulties with injection, tried sevral times and did not improve much
• Slope in pulse energy along the pulse train, up to 40% change from first to last pulse
• Significant background AGIPD after correcting beam trajectory

Shift sumary for 29.9.2023

X-ray delivery

• 6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz

Optical laser delivery

• PP laser, 1030 nm, 226 pulses at 1.1 MHz, stable delivery
• ns laser for rayleigh scattering, stabe delivery

Achievements/Observations

• Solved the issues with sampel injection
• Collected data without laser for 1 to 2 hours
• PP laser coarse timing

Issues

• Issues with injection, solved later in the shift
• Difficulties to find fine timing
• Issue with migrating data to offline cluster, solved by DOC

X-ray delivery

• 6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz

Optical laser delivery

• PP laser, 1030 nm, 226 pulses at 1.1 MHz, stable delivery
• ns laser for rayleigh scattering, stabe delivery

Achievements/Observations

• Solved the issues with sampel injection
• Collected data with laser 30 min
• PP laser time zero aligned

Issues

• IRU_Slit4 was in position to the beam
• It took time to aling all slits to reduce the scattering in low q

On multiple occasions this morning, the number of bunches was reduced to 1 without actions from our side.

Looking at the history of SA1_XTD2_BUNCHPATTERN/MDL/CONFIGURATOR, we noticed changes were applied by this device, presumably originating from one of the watchdogs in SA1. This kind of silent changes is particularly inconvenient and could be easy to miss if one is not constantly monitoring that the number of bunches remains the same. Given that there are dozens of watchdogs in SA1, it is at best cumbersome and time consuming to track the origin. Finding the origin of the restriction needs to be made easier.

X-ray delivery

• 6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz

Optical laser delivery

• PP laser, 1030 nm, 352 pulses at 1.1 MHz, stable delivery
• ns laser for rayleigh scattering, stabe delivery

Achievements/Observations

• Several tens of datasets were collected using two different laser polarization (0 degree and 45 degree)
• During the data collections PP laser phase shifter delay scans were used.
• PP laser time aligned to zero and spatial overlapped was checked.

Issues

• The cross talks between SASE-1 and SASE-2 was more than it expected.
• Beam position, pulse energy as well as intra-train pulse energy were varrying. (BKR managed to solved it before the evening)

X-ray delivery

• 6.3 keV, 3-4 mJ/pulse, 1-352 pulses at 1.13 MHz

Optical laser delivery

• PP laser, 1030 nm, 352 pulses at 1.1 MHz, stable delivery
• ns laser for rayleigh scattering, stabe delivery

Achievements/Observations

• Lots of datasets were collected using two different laser polarization (0 degree and 45 degree)
• During the data collections PP laser phase shifter delay step scans were used.
• PP laser time aligned to zero and spatial overlapped was checked.

Issues

• No major issue today