Aggregator
FSD Masking Tool: Successful Destination masking to: HallB,HallC
COMMENT ON Vacuum Activities CEBAF 3/10/2026 through 3/14/2027
Log Number: 4513898Logbook(s): Body:
Hall C - Called in for loss of vacuum between VBV3C20 and VBV3H04. VTP3C22A turbo pump was off and so was VIP3C22 and VIP3H02. Was able to get the turbo pump back on and pumping and the ion-pumps back on as well. After pumping for a while was able to open up VBV3C20 and VBV3H04.
SHIFT UPDATE: xC vacuum recovered, preparing to resume beam
Downtime Incident CLOSED: Can't send to xC. VBV3C20/3H04 closed. Possible 3C22 region vacuum leak
QuickPic - Full survey of Hall C for vacuum issue
Operator SIGN IN
Operator SIGN IN
"Vac on call and Radcon en route, for 3C vacuum issue"
Downtime Incident CREATED: Can't send to xC. VBV3C20/3H04 closed. Possible 3C22 region vacuum leak
QuickPic - 3C22 vacuum still rising with valves around it closed. Vacuum on call has been paged
FSD Masking Tool: Successful Destination masking to: HallB
iocsoftw4spce restored
Log Number: 4513852Logbook(s): Tags: Body: restorelib 3.0.1
Target restore date was 2026-06-19 15:36:13
The output from the myRestore execution was as follows:
iocsoftw4spce
systemEnum@2026-06-19 15:36
2(2) restored
Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftw4spce (success)
PVs modified: 0
PVs modified: 0
PVs modified: 0
PVs modified: 0
PVs modified: 0
PVs modified: 0
PVs modified: 0
Procedure return status: Success
QuickPic - VBV3C20 and 21 just closed
QuickPic - VDP3C19B comms error, has it been that way or is this vac issue due to the DP station
CREW CHIEF SIGN IN
Log Number: 4513844Logbook(s): Body:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 06-19-26
Time : 15:29:12
Day : Friday
Shift : Swing
Crew Chief : Forman
Program Deputy: Nissen
Team : X
Arm : Smith
Designated SSO: Anthony
LERF Operator:
Operators : Anthony, Smith
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 06-19-26
Time : 15:29:12
Day : Friday
Shift : Swing
Crew Chief : Forman
Program Deputy: Nissen
Team : X
Arm : Smith
Designated SSO: Anthony
LERF Operator:
Operators : Anthony, Smith
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
QuickPic - 3C22 vacuum in alarm. It's real, 3C18-3H02 vacuum rising since ~14:50
QuickPic - Hall B to Carbon 5nA CW
Crew Chief Shift Log, 2026-06-19 DAY
Log Number: 4513832Logbook(s): Tags: Body:
CEBAF SHIFT LOG
Shift Summary
Start of shift: Beam to HB/HC
Crew Chief Timesheet Summary: 19 Jun 2026 DAY
Log Number: 4513831Logbook(s): Tags: Body:
Accelerator
PHYSICS
STUDIES
RESTORE
ACC
DOWN
OFF (SAM)
Planned
8
0
0










