Aggregator
Diffuser Ion Chamber IICD307C Threshold 3 (Count)=0
Log Number: 4513003Logbook(s): Entry Makers: lrichardBody:
Hall C Diffuser Ion Chamber IICD307C was tripping when attempting to go above 50uA. Investigations revealed Threshold 3 (Count) remained at 0 while the other ion chamber IICD307B always had a number there and it increased with current (Figs. 1,3). Toggled the Manual button, saw no change, then back to Dynamic and now Threshold 3 (Count) shows 0 with no current, but ramps up with current (Fig. 2). Still not sure why IICD307C Threshold 3 (Count) drops to 0 on trips and IICD307B keeps a number in that field (Fig. 3).
QuickPic - xC -> 50uA on Loop2 10cm target
AutoLog - UNMasking Hall C Normal Target
iCalibrate: Hall C
AutoLog - Masking Hall C Normal Target
"xC -> BNR for target change"
Downtime Incident CLOSED: 0L04-6 Trips
Downtime Incident CREATED: 0L04-6 Trips
0L04-6 poff optimization
CREW CHIEF SIGN IN
Log Number: 4512966Logbook(s): Body:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 06-17-26
Time : 19:11:36
Day : Wednesday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Nissen
Team : X
Arm : Anthony
Designated SSO: Smith
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 : 06-17-26
Time : 19:11:36
Day : Wednesday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Nissen
Team : X
Arm : Anthony
Designated SSO: Smith
LERF Operator:
Operators : Anthony, Smith
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
QuickPic - xC -> 40uA on Dummy 10cm
AutoLog - UNMasking Hall C Normal Target
AutoLog - Masking Hall C Normal Target
iCalibrate: Hall C
"xC -> BNR for target change"
AutoLog - Masking Hall C Normal Target
AutoLog - UNMasking Hall C Normal Target
QuickPic - MBC7R06V mismatch. Took setpoint
ATLis Comments Daily Digest
Log Number: 4512944Logbook(s): Tags: Body:
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ATLis Comments Posted 18:00 Tuesday June 16 through 18:00 Wednesday June 17
AES Safety Systems
Routine Maintenance of ODH Systems (Managed by SSG).
2026-06-17 14:06 - Scott Bruhwel










