Aggregator

Log Number: 4513016Logbook(s): 

• ELOG

Entry Makers: msmithBody: 

BPM stack is in alarm due to 1L04 Hi Y Sat alarm. Tried to clear the alarm using the twiddle tunnel guidance but no dice.

Log Number: 4513003Logbook(s): 

• ELOG

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).

Log Number: 4512994Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4512991Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4512987Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 3Note: Calibrated On:2026-Jun-15 04:06Calibrated By: samariFile:C-2026-06-15_0406_Loop_2_10cm_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,866</

Log Number: 4512986Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512985Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4512978Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17198Title:
0L04-6 Trips

Summary:
Cavity 6 was dropping RF in the zone on arc faults. We tried optimizing the phase offset.

Log Number: 4512977Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17198Title:
0L04-6 Trips

Summary:
Cavity 6 was dropping RF in the zone on arc faults. We tried optimizing the phase offset.

Log Number: 4512976Logbook(s): 

• ELOG
• RFLOG

Entry Makers: msmithBody: 

0L04 tripped multiple times. Seemed to be cavity 6 causing the issues. I've tried a poff optimization to see if it helps.

Log Number: 4512966Logbook(s): 

• ELOG
• LERFLOG

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:

Log Number: 4512956Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4512955Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4512953Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512952Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 3Note: Calibrated On:2026-Jun-15 07:14Calibrated By: samariFile:C-2026-06-15_0714_10cm_Dummy_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,837</td

Log Number: 4512951Logbook(s): 

• HCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4512950Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4512949Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4512946Logbook(s): 

• DCLOG
• ELOG

Entry Makers: msmithBody: 

Log Number: 4512944Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ 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