SC1R Flow Decrease is complete. We will remain at 185g/s overnight and plan to lower flow again in the morning with the goal of shutting down SBR C2 by the end of the day tomorrow (7/15) if we are able. SLinac Heater Margin is sitting around 30W/module.
NL +1.6MeV
1L21- 7 pre amp replacement +1.6MeV
1L21-5 T/S
SL(+11.5MeV)
2L10-7 Camac stepper motor card replaced
2L13-8 pre amp changed
2L18-8 pre amp +4MeV
2L17 whole zone pre amps changeout
2L17-5 recovery from pre amps changed +3.5MeV
2L20-8 filament board replacement +4MeV
The following cavity histories have been updated:
2L10-7
Username: lrichard
Date/Time: 07-14-26_16:06:52
RF Status: Good
Tuner Status: Good
Comment: Okay; refer to previous comment; Marking as bad affects LEM
Special Instructions: Cavity Tuner inop. Leave tuner in Manual and do not change gradient until repairs made.
Maintenance Tag: Component: Operator Entry - See SME
The following cavity histories have been updated:
2L10-4
Username: lrichard
Date/Time: 07-14-26_16:06:00
RF Status: Good
Tuner Status: Good
Comment: Okay; refer to previous comment. Marking as bad affects LEM
Special Instructions:
Maintenance Tag: Component: Operator Entry - See SME
2.5w AMP replaced in cavity 7 but had tuning and CWVF faults running above 3.3 Mv/m and detuned easily. Cavity 5 tuner/CRFP unstable issue was retuned but started to drop HV on zone when gradient raised above the 3.9 Mv/m. Monitoring KCCU after each HV attempt required a waiting period to let tube recover until it didn't and resistor blew. 1L21-5 re-bypassed and steppped off +100k steps.
| Shift | Owl |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Deir |
| MCC Operators | Samari, Smith |
| Program Deputy | Duzik |
| Announcements |
