Aggregator
FSD Masking Tool: Partial Success Destination masking to: HallB,HallC
User: shriner
Mismatch Detected - Gold Masks vs. Control System Values!!!
See Values [Calculated / Control Sys] Masked = 1, UnMasked = 0
Node Name : FSD_1W02_1
Ch. 4 Mismatch [ 0 / 1 ] RRF2E00A / RFSeparator
Ch. 6 Mismatch [ 0 / 1 ] RRF6E00A / RFSeparator ... +
Ch. 7 Mismatch [ 0 / 1 ] RRF8E00A / RFSeparator ... +
Ch. 10 Mismatch [ 0 / 1 ] RRFAE00C / RFSeparator
Ch. 11 Mismatch [ 0 / 1 ] RRFAE00D / RFSeparator
Node Name : FSD_2H02
Ch.
troubleshooting optics (RF)
I looked at the available signals from the RF zones and couldn't find anything related to the instability. I noticed 240 Hz and 6 kHz component on the hall C BPM DAQ. I couldn't find anything correlated with this one either.
I suggested to OPS to unbypass 1L05-3 and bypass 1L10-2, if there is an opportunity. There was an observation made by Eric Deir about 1L10-2 forward power few days ago. I will keep looking for any if any rf related issues are contributing to beam instability
FSD Masking Tool: Successful System UN-Masking for: IonChamber
"Weekly source checks of radiation instruements in the MCC are complete"
Downtime Incident CLOSED: Checking orbit to xB
Downtime Incident CREATED: Checking orbit to xB
COMMENT ON Troubleshooting Optics (DC Power)
Tune beam orbit to Hall B + Lambertson spot
We're making it to the dumplette, but perhaps unsurprisingly the optics situation is far from ideal and the beam is a stripe on the Lamberton. Attempting to center it with the AT corrector lit up the IDXs even more, but this is not a rabbit hole we want to be diving into at the moment. Recirculated beam is making it to the dumplette.
FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor
User: shriner
Areas: All
BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM
PL adjustment
dogCalc V0-14 download
FSD Masking Tool: Successful System Masking for: BeamLossMonitor
User: shriner
Areas: All
BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0
COMMENT ON RF Maintenance and Repairs for Physics Run 2026
Looked over RF signals and RF cavities in RF yesterday and today and staged a replacement RFCM at 0L03-1 (53 mW LOPW and varying) along with PTW. CC Adams diverted turning off beam for the replacement of the RFCM till possibly tomorrow or next week to see if it will mitigate the beam jitter on 1A and 2A viewers. I think this is a readback problem on the RF LOPW detector due to the fact that I don't see any variations in gradient or phase on any pertaining cavity signals or detectors and without proper 1427 Mhz signals, there would definitely be variations from the drive-line and cryo-module.
Vacuum Group Summary 2026-04-09
Operator SIGN IN
Operator SIGN IN
Operator SIGN IN
COMMENT ON RF Maintenance and Repairs for Physics Run 2026
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 04-09-26
Time : 15:22:17
Day : Thursday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Malace
Team : C
Arm : Anthony
Designated SSO: Shenenberger
LERF Operator:
Operators : Anthony, Shenenberger, Shriner
This stamp certifies that the above Crew Chief has read/reviewed/received the following:










