Crew Chief Shift Log, 2026-06-09 DAY
Start of shift: SCAM Update completed.
Start of shift: SCAM Update completed.
The following cavity histories have been updated:
1L18-6
Username: kerns
Date/Time: 06-09-26_15:07:24
RF Status: Good
Tuner Status: Good
Comment: RFCM replaced for no GASK with gradient loop closed. Optimized RF at ODVH= 9Mv/m.
Special Instructions:
Maintenance Tag: Component: RFCM {Removed SN: 351, Replacement SN: 304}
The following cavity histories have been updated:
1L09-5
Username: alexs
Date/Time: 06-09-26_14:54:25
RF Status: Bad
Tuner Status: Good
Comment: C75 Bypassed - klystron filament open. Tube needs to be replaced
Special Instructions: Letting the Klystron condition so donot bypass it just the RF off. Stepped 20kHz away for now.
Maintenance Tag: Component: Tube
1L18 -5 continues to blow resistors and trip breakers. Klystron and wire harness looked okay when hipotted, and still no smoking gun found. Pulled the jumper on cavity 5 (3.7 MV/m) and brought back the rest of the zone.
1L09-5: Traced filament issues to an open klystron filament. Upon review, this klystron was part of a batch with an acknowledged welding issue, hence the short lifetime. Making preparations this afternoon to replace the klystron tomorrow.
The following cavity histories have been updated:
2L16-5
Username: michaelm
Date/Time: 06-09-26_14:41:57
RF Status: Good
Tuner Status: Good
Comment: CWVF limited at 7.3
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME
The following cavity histories have been updated:
2L13-1
Username: michaelm
Date/Time: 06-09-26_14:32:20
RF Status: Good
Tuner Status: Good
Comment: arcs repeatably at 7.4
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME