X-ray delivery

    up to 175 pulses per train (~1 mJ pulse energy)@13.4 keV, 0.5 MHz

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned

    Data collection for some samples

Issues

    We could use 188 pulses, but last 13 pulses intensity was too weak, not used for measurement

Due to issues SCS has with pulses from SASE1 lasing in SASE3 and destroying, or at least modifying, their sample, it was decided to change the order in the RF configuration to have SASE3 pulses before SASE1. The change will be done at 12 pm, agreed with FXE.
The impact for SPB will be the loss a few pulses (5%), I contacted Richard to get confirmation that this is ok for SPB.

Best regards,
Martin (PRC week 9)

X-ray delivery

    up to 202/352 pulses per train (~0.8 mJ pulse energy)@13.4 keV, 0.5/1.1 MHz 

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned

    Data collection for some samples
 

X-ray delivery

    up to 202/352 pulses per train (~0.8 mJ pulse energy)@13.4 keV, 0.5/1.1 MHz 

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned

    Data collection for some samples

Issues

    No major issue today

X-ray delivery

    up to 202/352 pulses per train (~0.8 mJ pulse energy)@13.4 keV, 0.5/1.1 MHz 

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned

    Fixed target measurement was finished

X-ray delivery
-15 keV with Hirex monitoring, 0.5 mJ/pulse, 202 pulses/train at 0.56 MHz pulse repetition rate
Optical laser delivery
- 810 nm laser for illumination
-PP laser for excitation, 590 nm, 51 pulses, 141 kHz
Achievements/Observations

• Collected high resolution time resolved data
• Collected Tve_CPC500f and Tve_CPC1n data and completed Tve_CPC20p

SPB/SFX shift summary user experiment 8039

**X-ray delivery**
-15 keV with Hirex monitoring, 0.5 mJ/pulse, 202 pulses/train at 0.56 MHz pulse repetition rate

**Optical laser delivery**
-810 nm laser for illumination

**Achievements/Observations**
- Collected sample data for ca. 2h 15min using a DFFN 
- XTD2 CRLs optimized and realigned
- Offset mirror M1/M2 optimized for 15 keV
- Repositioned the illumination fiber inside IRU chamber
- Germanium blades were installed for the IRU_Slit_4 (top and bottom)

**Issues**
- PP laser alignment could not be pursued as hexapod had to be repositioned first (interaction region was too close to exit cone)

X-ray delivery

• 12.4 keV, 1.1mJ/pulse, 202 pulses/train at 0.56MHz
• Focused NKB beam was used

Optical laser delivery

• ns laser for jet visualization

Achievements/Observations

• Successfully finished all PCS beamtimes
• Stable jet with PEO sheath

Issues

• No beam in the morning
• Unstable jet with ethanol sheath

X-ray delivery
-12.4 keV, 202 pulses, 0.5 MHz, 1mJ/pulse

Optical laser delivery
- ns laser (660 nm wavelength) for jet illumination

Achievements/Observations
- NKB focus optimized
- One PCS user program successfully finished
- Second PCS user program was just started

Issues
- Right before we could start with beam defocusing, the beam was gone around 8:45 pm. BKR called to let us know that there will be no beam today (cryo issues)

X-ray delivery

    up to 202 pulses per train (~1.9 mJ pulse energy)@9.3 keV, 0.5 MHz

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned and timed

    runs for -1 ps - 1.5 ps

    Very stable jet

    PAM was installed

X-ray delivery

    up to 202 pulses per train (~1.9 mJ pulse energy)@9.3 keV, 0.5 MHz

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned and timed

    runs for -1 ps - 1.5 ps

    Very stable jet

Issues

    No major issue

X-ray delivery

    up to 202 pulses per train (~1.9 mJ pulse energy)@9.3 keV, 0.5 MHz

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue
    

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned and timed

    runs for -1 ps - 1.5 ps

    Very stable jet

Issues
    No major issue

X-ray delivery

    up to 352 pulses per train (~1.9 mJ pulse energy)@9.3 keV, 0.5 MHz ans 1.1 MHz. Beamdown for 40 min.

Optical laser delivery

    800 nm, less than 20 fs at sample position, no issue

Achievements/Observations

    X-ray beam de-focused to a few um for data taking

    PP laser aligned and timed

    1 hours data collection

Issues

    AGIPD gain map was strange, some gain changes was observed without X-ray

    Data was not migrated -> DRC was called and informed

SPB/SFX 7955 Day 4

X-ray delivery

• up to 202 pulses per train (~1.4 mJ pulse energy), 0.5 MHz

• stable

Optical laser delivery

• 420nm used for sample excitation. timed to 1ps with water jet interaction

• PAM set up for time points <1 ps

• From 19:15 to 21:15 (100 uJ/cm2 data point) the feedback loops were off resulting in higher intensity fluctuations, resolved at 21:52

Achievements/Observations

• x-ray beam de-focused to a few um for data taking

• PP laser aligned and timed

• PAM calibrated and used with YAG sample surviving 13% transmission

• power titration at 100ns and fluences 13 mJ/cm2, 25 mJ/cm2, 100 mJ/cm2 and 191 mJ/cm2

• delays 100 fs and 500 fs

• good peak distribution at 13% transmission (None / None / None / 3200 CVD)

• hit rate around 6%

Issues

• problems with catcher alignment after clean up

SPB/SFX 7955 Day 3

X-ray delivery

• up to 202 pulses per train (~1.4 mJ pulse energy), 0.5 MHz.

• One longer down toward the end of the shift

Optical laser delivery

• 420nm used for sample excitation. timed to 1ps with water jet interaction

Achievements/Observations

• x-ray beam de-focused to a few um for data taking

• PP laser aligned and timed

• runs for 1ps, 100ps and 100ns pumped data sets

• hit rate much better (even > 10%) than previous day with small crystals

Issues

• a lot of nozzle exchange in the morning

• DAMNIT issue with too many queued jobs – some of the earlier jobs timed out

Preparation for user expt #7944

X-ray delivery

• Single pulses (10 Hz) at 9.3 keV, 2.3 mJ
• Again similar low pointing noise

Achievements/Observations

• Tested different substrates for deposition of ice
• Optimized ice deposition conditions
• Recorded example data to prepare analysis scripts

Handover

• Beam transport to SPB and 11 keV requested from BKR at 6:30h

SPB/SFX 7955 Day 2

**X-ray delivery**
* up to 202 pulses per train (~1.4 mJ pulse energy), 0.5 MHz.
* A few beam downs toward the end of the shift

**Optical laser delivery**
* 420nm used for sample excitation. timed to 1ps with water jet interaction

**Achievements/Observations**
* x-ray beam de-focused to a few um for data taking
* PP laser aligned and timed
* runs for 1ps pumped data set
* good peak distribution at 11% transmission (100 CVD/ 200 CVD / None / 3200 CVD)
* hit rate better than previous day

**Issues**
* a lot of nozzle exchange
* sample most likely accumulating on the catcher entrance window
* DAMNIT issue with too many queued jobs, fixed by Oleksii (OCD)

**To do for next shift**
* finish power titration and continue with other time points

Preparation for user expt #7944

X-ray delivery

• Since pulses (10 Hz) at 9.3 keV, 2.2 mJ
• Again similar low pointing noise

Achievements/Observations

• Confirmed amorphous ice deposition and -removal
• Optimized scattering geometry
• Calibrated detector position

Handover

• Beam transport to SPB and 11 keV recovered by BKR

SPB/SFX 7955 Shift 1
**X-ray delivery**
* up to 202 pulses per train (~1.4 mJ pulse energy), 0.5 MHz.

**Optical laser delivery**
* 420nm used for sample excitation. timed to 1ps with water jet interaction
* difficult to find good filter combination for jet illumination laser and pump laser

**Achievements/Observations**
* 10.8 keV - 11.2 keV energy scan
* lysozyme geometry data set
* several runs for sample dark data set (potentially more needed)
* a few runs for 1ps pumped data set (definitely more needed)

**Issues**
* difficult end to shift (nozzle and illumination issues)
* hit rate rather low for timing program (leads to long processing times)

**To do for next shift**
* continue user data set including power titration
* start time delay sequence

Preparation for user expt #7944

X-ray delivery

• since pulses (10 Hz) at 9.3 keV, 3 mJ
• Pointing stability 55 um RMS in the horizontal plane on FXE PI, which is lower as compared to earlier values

Achievements/Observations

• Aligned xrays into FXE vacuum/cryo setup
• Performed ice depositions in-situ and characterized by Xray

Handover

• Beam transport to SPB and 11 keV recovered
• We left Hirex inserted during FXE operation, but closed the GH2 shutter. It is still closed.

Issues

• XTD2 crl lens3x motor moving in wrong direction and already past all limits. Created ticket with EEE (no DOC available) #216784. Lens3x is not needed for the ongoing experiment, but the situation is potentially dangerous.