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 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

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

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 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 202/352 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

    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

    Data collection for some samples
 

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

X-ray delivery

    up to 188 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

X-ray delivery

    up to 188/352 pulses per train (~1 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:**
* 16 keV, ~upto 1 mJ, 160 pulses
**Optical Laser:**
* None
**Achievements / Observations:**
* Alignement
* Recorded first explosions

X-ray delivery:

20 keV, ~ 400 uJ, 128 pulses, stable delivery 

Optical Laser:

1030 nm, 850 fs, stable delivery

Achievements / Observations:

20 keV beam to sample position and cameras
Rough alignment of optical setup
 

Issues:

Optical laser from light conversion had issue with shutter control

X-ray delivery:

20 keV, ~ 400 uJ, 128 pulses, stable delivery 

Optical Laser:

1030 nm, 850 fs, stable delivery

Achievements / Observations:

Rough timing alignment of optical laser setup
Took some initial data 

Issues:

No major issue to report

X-ray delivery:

20 keV, ~ 400 uJ, 246 pulses, stable delivery

Optical Laser:

1030 nm, 850 fs, stable delivery

Achievements / Observations:

Spatial and temporal alignment of optical laser setup
Data collection

X-ray delivery:

20 keV, ~ 500 uJ, 246 pulses, stable delivery

Optical Laser:

1030 nm, 850 fs, stable delivery

Achievements / Observations:

Lots of data collection

Issues:

Shimadzu camera for Schlieren imaging had issue with shutter, mechanically broken.

Staff: PV, TS, JK, FK, + users

X-ray delivery:

20 keV, ~ 300-400 uJ, 250 pulses, stable delivery 

Optical Laser:

1030 nm, 850 fs, stable delivery

Achievements / Observations:

Lots of data collection

Issues:

No major issue today

X-ray delivery:

20 keV,  250-400 uJ, 250 pulses, stable delivery

Optical Laser:

1030 nm, 850 fs, stable delivery

Achievements / Observations:

Lots of data collection

Issues:

No major issue today

X-ray delivery:

10 keV, ~ 850 uJ, 128 pulses, tuning was needed for 1 hour 

Optical Laser:

No PP-laser for this week

Achievements / Observations:

Finalized alignment of crystals

Issues:

No major issue today.