Aggregator

• ELOG
• POLOG

- RTP HV Settings - as found:
https://logbooks.jlab.org/entry/4467498

- We are now using JLab HV Driver (old driver is off):
https://logbooks.jlab.org/entry/4467516

• ELOG
• POLOG

Notes about the unused KD*P cell:
https://logbooks.jlab.org/entry/4467616

• SRFLOG
• ELOG
• RFLOG

Went into HV on second attempt.
ARC faults in cavities 1, 3, 4, 5 and 7 while turning on RF or tuning.
All cavities steady at 4MV/m GSET.
Cavities 3, 4, 5, and 7 required OLT

• POLOG
• ELOG

Low Voltage and Beam QE scans show a good photocathode with max QE of 1.36%:
https://logbooks.jlab.org/entry/4467480

The transverse manipulator was re-engaged to its magnet:
https://logbooks.jlab.org/entry/4467378

• POLOG
• ELOG

- Did beam QE scan - max QE 1.36%
- Connected new HV Driver to RTP Pockets Cell
- PQB beam study transmission test for Aperture A2 at 4 mm was unsuccessful - will fix issues today.

• SRFLOG
• ELOG
• RFLOG

Cav-1: Bypassed, not touching
Cav-2: steady at 4MV/m GSET
Cav-3: GSET 0, not touching
Cav-4: GSET 0, not touching
Cav-5: Steady at 3MV/m GSET after OLT
Cav-6: Bypassed, not touching
Cav-7: Steady at 4MV/m GSET
Cav-8: Steady at 4MV/m GSET

• SRFLOG
• ELOG
• RFLOG

All cavities recovered to 4 MV/m GSET.

Cav-2 recovered at first, then had ARC faults. Good after OLT.
Cav-3 required OLT.
Cav-6 struggling with phase and gradient loops. OLT did not help. Otherwise, stable at 4 MV/m.

• SRFLOG
• ELOG
• RFLOG

OLT'd cavities 2 and 6. All cavities recovered to 4 MV/m.

• ELOG

cavities were pretty far off from the machine frequency
cavity 1 - ~24 kHz
cavity 2 - ~15 kHz

tuned the cavities closer to machine frequency. increased the gradients in SEL to the set points from the last run
cavity 1 - 2.5 MV/m
cavity 2 - 10.09 MV/m

made sure drive level (GASK) and the forward power levels (CRFP) are similar to the ones from the last run

poff optimization was done after tuning the cavities. used the one button to recover the cavities into SELAP