7:15 SPB reports large background from non-lasing SASE3 bunches. BKR is informed.  

7:50 BKR analysed situation. Everything concerning the orbits is OK, so the background is due to the standard spontaneous background (about < 1% level of FEL beam). With SASE3 running currently 255 lasing bunches and SASE1 single bunch the intensities will be on a similar level. Recommendation to SPB to close SRAs from 3 mm to maybe 1.5 mm to reduce background. 

5:49 HED called and they have problems with the Laser Sync signal. A change of laser delay is not possibe. We supsect that it is similar to earlier this week at FXE, where a crash of a sync CPU caused a similar error. BRK is informed and tries to reach somebody from sync Group via email (at 6:35, no OCD phone number available) . If this does not work, we will work with the shifts starting at 7:00 on this (DOC and new BKR crew). 

8:45 (see also DESY elog entries): After several attempts LBsync timing works, at least for now. One problem was that the crate was constantly rebooting by itself. Now it is stable, but error could happen again. In that case, BKR should activate expert via email. 

Attachements: Location of LBsync server status in DOOCS and status of XFELcpuSYNCEXP1-3 for last light

7:20 FXE reports a problem with laser synchronisation (yellow warning light and could not change delay). BKR informs the DESY laser sync group. 

7:51 DESY sync group reported that there was a CPU failing about 6 am this morning which led to the yellow warning light. However, synchronisation was very likely all the time ok withing 5-10fs. The CPU was now reset and everything should be wokring now. 

**X-ray delivery:**
* 16 keV, ~upto 1 mJ, 160 pulses
**Optical Laser:**
* None
**Achievements / Observations:**
* Alignement
* Recorded first explosions

The status of the FXE shutter in the Public status display DOOCS panel is incorrect. Here appears as opened, when it is actually closed.

MID called and reported issue with Dachs terminals at the user labs (probably no power). TS was informed. Because the lab are currently accessible (doors are locked open), TS will take care about it on Monday.

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

    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 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