posting for 17th June

Staff: AR, AS, FK, HH, JB, KK, DZ, MK

X-ray delivery

• 12.4 keV, 1.4 mJ

Optical laser delivery

• 532 nm, ns-laser for sample pumping

Achievements/Observations

• Continued to collect data many hours of data collection

Issues

• coupling with SASE2 limited feedbacks to control slope across train, this led to dificulties in alignment and lost time to correct for poor visualisation of the beam.
• After discussion SASE2 kindly gave permission to BKR to corect the slope to facilitate our alignment
  • we also with the help of PRC arranged for the same arrangment for alignment for sunday

X-ray delivery

• 12.4 keV, up tp 352 pulses but the intensity drop across the train was too dramatic to use. reasonably stable delivery with 202 pulses.

Optical laser delivery

• none

Achievements/Observations

• reestablished direct beam trajectory and verified instrument alignment
• collected flat field calibration for AGIPD-1M for all high priority scenarios and some additional settings (see table copied in SPB commissioning or original AGIPD log)

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.

Staff: AR, MS, DM, RL, RdW

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• stable delivery

Optical laser delivery

• None

Achievements/Observations

• Beam aligned down to zyla cam 3
• CRLs were inserted but created too much speckles on Jungfrau and we couldn't reach the expected 80 um beam size for the users lenses (arms 6 and 7 unusable, arm 4 hole feature in beam)
• user lenses aligned
• User beamstop installed to block 1st order line in horizontal direction
• Collected several speckle tracking data scans without our CRLs - to give initial estimates for focus
• Jungfrau timing confirmed - signal observed

Issues

• Could not see signal with the thin sample and the CRLs inserted
• clear aberations from our CRLs
• CRL arm 4 motors were not moving. To recover it, we connected the motor and encoder cables from the pinhole arm.

Staff: AR, MS, DM, KK, RL, RdW

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 900 uJ
• Beam down around 1h

Optical laser delivery

• None

Achievements/Observations

• XTD2 lenses were realigned
• Crystal diffraction data from lysozyme and MOF collected with detector close up

Issues

• Beam down around 1h
• Once again we lost connection to JF4M module 01 requiering reset of receivers.

X-ray delivery

• 16.9 keV, up to 30 pulses and 1.1 MHz for alignment, 1 pulse for data collection
• 800 uJ
• Beam pointing and corrected with M2 Ry piezo stepping optimizing scatering intensity seen on JF4M

Optical laser delivery

• None

Achievements/Observations

• Crystal diffraction data from user samples

Issues

• pointing stability was again an issue but adjusting with M2 Ry piezo stepping optimizing scattering intensity seen on JF4M enabled online correction

BKR changed the beam energy from 15 keV to 12.4 keV

Energy 12.4 keV

Repeatation rate 1.1 MHz

Average pulse energy 1.8 mJ

Beam is back at around 11:30 pm

We lost 1 hr 30 min of beam time.(it was promised to get back at around 10:00 am)

If we want to change the pulse number then we need to call BKR.

X-ray delivery

• 7.8 keV, up to 30 pulses at 94 kHz, 3 mJ

Optical laser delivery

• No laser

Achievements/Observations

• Trying to solve issues

Issues

• AGIPD's asics interlocked several times. Marcin was informed and he tried to solve the issue remotely but did not work.
• Marcin observed that the AGIPD's chiller temperature was increasing since afternoon and not going down below -16 degree. Probablly the chiller is no longer at proper state. Macrin was onsite and tried to solve the issue without success. Informed to detector group
• Difficulties with alignment of direct beam path until NKB