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COMMENT ON Troubleshoot VFV2L27 Controls
Log Number: 4521029Logbook(s): Body:
Initial troubleshooting seemed to have been a failed Fast Valve Charge Module card that was not charging up to the desired voltage. Replaced with spare but was blowing fuses.
Continued investigation found that the Fast Valve Control card's trigger circuit was firing constantly, which was keeping the Charge Module from charging.
Replaced Control card.
Tested interlock with the help of MCC and controls are back to operating conditions.
Handed it back to OPS to continue Beam Operations.
Keeping ATLis and ePAS open till tomorrow just in case more issues arise.
FSD Masking Tool: Successful System UN-Masking for: CryoModule
"I&C resolved VFV2L27 issue, handed machine back to ops."
2L10-7 OTMP fault
Log Number: 4521026Logbook(s): Entry Makers: kernsBody:
Replaced the MOPS tuner 5A fuse today after finding it had blown. This is the 24v that feed the tuner stepper motor and most likely caused by a bad camac stepper card or a frozen tuner/bad motor. We can try a stepper card next maintenance or check tuner movement downstairs if able. Tuner in manual at 4Mv/m but detune angle out at ~45-48 degrees with CRFP ~400w which should run for a while .
2L18-8 GSET 0 for no CRFP in OLT
Log Number: 4521025Logbook(s): Entry Makers: kernsBody:
Recovered this cavity at 1545 and noticed the drive was getting weak and set it to 8 Mv/m. Erik F. said the CRFP was intermittently dropping to 0 kw during OLT. It looks like it was way out of tune when the loops closed and had a gradient measured fault and GMES continued to indicate 3 Mv/m with no CRFP. Clearing this fault and retuning this cavity will most likely get it back but I will leave it until tomorrow to try recovering.
APPROVED Troubleshoot VFV2L27 Controls
SHIFT UPDATE: Beam to SL impeded by vacuum valve VFV2L27 tripping FSD.
Log Number: 4521023Logbook(s): Entry Makers: eformanBody:
Beam to SL impeded by vacuum valve VFV2L27 tripping FSD. The valve is open but showing "Triggered" and "Not Ready". Ops attempted a power cycle of the chassis under SME guidance, however that was unsuccessful. Presently waiting for I&C to arrive onsite to troubleshoot. While we are waiting, we are running a phaser job in the North.
COMMENT ON Troubleshoot VFV2L27 Controls
HYST AREA 7-0 Cycles Magnets for LEM
LEM North Linac
FudgeIt
LEM North Linac
LEM North Linac
FudgeIt
LEM North Linac
FSD Masking Tool: Successful System Masking for: CryoModule
QuickPic - I&C on call headed in to sort out VFV2L27 triggered state that will not clear
SA01B10 bootstrap PS fault
Log Number: 4521012Logbook(s): Entry Makers: yoonBody:
An operator checked trim rack in person and noted that the bootstrap power supply is showing off, but magnets on this rack are taking setpoint and it otherwise doesnt seem to be creating an problem. Will call DCP on-call if/when it becomes an issue with sending beam.
HYST AREA 7-0 Cycles Magnets for LEM
Shift Information
| Shift | Owl |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Howard |
| MCC Operators | Price, Chaudhary, Christian |
| Program Deputy | Duzik |
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