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FSD Masking Tool: Successful System UN-Masking for: CryoModule
HYST AREA 7-0 Cycles Magnets for LEM
LEM South Linac
Downtime Incident CREATED: 2L11-7 Low KCCU
The following cavities have been GSET 0: 2L11-7
The following cavities have been GSET 0:
2L11-7
Username: alexs
Date/Time: 08-13-26_15:27:18
RF Status: Good
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - Klystron arced. Can be recovered once KCCU is back
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME
Downtime Incident CLOSED: 2L11 dropped HV and Filaments for Cavity 5 Watchdog Fault
2L11 dropped HV and Filaments for Cavity 5 Watchdog Fault
Summary:
2L11 dropped HV and Filaments for Cavity 5 Watchdog Fault. Attempted RFCM reboot failed. Paged RF On-call. RFCM swapped. Zone brought back up to HV and RF recovered.
The following cavity histories have been updated: 2L11-5
The following cavity histories have been updated:
2L11-5
Username: kerns
Date/Time: 08-13-26_15:18:03
RF Status: Good
Tuner Status: Good
Comment: RFCM replaced for loss of comm-Watchdog/GMES faults. Optimized at 8.1 Mv/m.
Special Instructions:
Maintenance Tag: Component: RFCM {Removed SN: 308, Replacement SN: 151}
Crew Chief Shift Log, 2026-08-13 DAY
Start of shift: CW beam to xBCD.
Crew Chief Timesheet Summary: 13 Aug 2026 DAY
COMMENT ON Krest testing: Recompiled for RHEL7 and RHEL9
Inital testing on 2026-08-13 revealed errors that will be debugged offline:
BSList 112860: krest
Inital testing revealed errors that will be debugged offline.
It seemed to connect to the lock zones fine, but then it could not connect to the PSET or GSET signals (Fig 4).
Established Tune Beam to 1R
Fig 1: Crested 1L02 in ITV1S01, along with zone gang phase and NL gang phase
Fig 2: Took each 1L02 cavity off crest by +/- 5 degrees
Fig 3: krest template we're using for testing on 1L02.
Fig 4: Error message - failed to connect.
RF Module Downloads
FSD Masking Tool: Successful System Masking for: CryoModule
2L11 dropped HV and Filaments; Cavity-5 watchdog fault
Downtime Incident CREATED: 2L11 dropped HV and Filaments for Cavity 5 Watchdog Fault
2L11-5 RFCM lost comms
rayTrace Data Collection: MBT0R08V to IDA1R02 - Y plane - BSList 120767 - ILD to 1R y-plane, 0.5mm, with beam this time.
login_key = pro, workspace = OPS
Data collection parameters:
corrector2 = MAT0R09V
sddsmonitor_interval = 1.0
data_dir = /cs/prohome/apps/r/rayTrace_12GeV/1-25/fileio/data/2026-08-13_13:18:08_MBT0R08V_IDA1R02_Y
beta = 3.225553819556068
end_pass = 1
corr2_s = 103.746888036137
name = ILD_to_1R_y
master_mode_readback_pv = IGL1I00BEAMODE.RVAL
master_mode_setpoint_pv = IGL1I00BEAMODE.VAL
QuickPic - Hall C Full Survey
rayTrace Data Collection: MBT0R08V to IDA1R02 - Y plane - BSList 120767 ILD to 1R y-plane, 0.5mm
login_key = pro, workspace = OPS
Data collection parameters:
corrector2 = MAT0R09V
sddsmonitor_interval = 1.0
data_dir = /cs/prohome/apps/r/rayTrace_12GeV/1-25/fileio/data/2026-08-13_13:09:27_MBT0R08V_IDA1R02_Y
beta = 3.225553819556068
end_pass = 1
corr2_s = 103.746888036137
name = ILD_to_1R_y
master_mode_readback_pv = IGL1I00BEAMODE.RVAL
master_mode_setpoint_pv = IGL1I00BEAMODE.VAL










