Aggregator

Log Number: 4541824Logbook(s): 

• ELOG

Body: 

Performed Qo on cavity 7
16MV/m to 22 MV/m. Second shift will complete measurement.

Log Number: 4541811Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shriner
DATE:             08/12/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4541789Logbook(s): 

• ELOG

Body: 

RadCon will survey Hall C around 9-9:30am, and they will remain controlled access until ~15:30. You should be able to make access during that time.

Log Number: 4541762Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 08-12-26
Time : 15:31:18
Day : Wednesday
Shift : Swing

Crew Chief : Schoene
Program Deputy: Park
Team : C
Arm : Shriner
Designated SSO: Anthony
LERF Operator:
Operators : Richardson, Anthony, Shriner

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4541760Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: BCD Beam

Log Number: 4541758Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 8 0 0

Log Number: 4541702Logbook(s): 

• ELOG

Entry Makers: alexsBody: 

When attempting to bring Hall C back up to 70 uA from 50, we started getting a rash of 7S01 BLM trips. Path length and gang phase checked out okay. Thankfully, a good ZeroPos of the machine was in, and the issue was quickly traced to vertical position drift in 9S. A small adjustment with the 8R10V corrector brought the rels back to 0, and BLM trips ceased.

Log Number: 4541698Logbook(s): 

• ELOG
• INCLOG

Body: 

We are looking to make access into Hall C tomorrow, Thursday the 13th. Please advise on potential accesses tomorrow.

Log Number: 4541683Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: bbarker
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

Log Number: 4541680Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: bbarker
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

Log Number: 4541675Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

See linked entry.

Log Number: 4541671Logbook(s): 

• HCLOG
• ELOG

Entry Makers: alexsBody: 

Log Number: 4541664Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4541663Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: Loop 2 10cmPass: 5Note: Calibrated On:2026-Jul-27 23:36Calibrated By: shrinerFile:C-2026-07-27_2336_Loop_2_10cm_Pass-5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton4,300<

Log Number: 4541662Logbook(s): 

• HCLOG
• ELOG

Entry Makers: alexsBody: 

Log Number: 4541661Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4541657Logbook(s): 

• ELOG

Tags: 

• PDWeeklySummary

Body:  PD WEEKLY SUMMARY

• PROGRAM DEPUTY: Rylen Latosky
• DATE (from):

Log Number: 4541642Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

From Leo: For ion pumps with the "smart" interlocks that have delayed and fast trip, I suggest using the slow delay as a "red" alarm, as vacuum in this range will trigger a valve closure if it does not improve, then set the "yellow" alarm one decade lower as a caution warning.

1. For these ion pumps: VIP2I00, VIP1I01, VIP1I02, VIP1I03, VIP1I04, VIP1I05, VIP1I06, VIP0I00, VIP0I01, and VIP0I01A - See Figures 1-4. Then the limits are:
VIPxxxx.HIHI = 5e-06
VIPxxxx.HIGH = 5e-07
VIPxxxxV.HIHI =  6000
VIPxxxxV.HIGH =  5500
VIPxxxxV.LOW =  3000
VIPxxxxV.LOLO =  2500

---

2.

Log Number: 4541641Logbook(s): 

• ELOG

Body: 

New samples were taken on the July 17 round of slushing - these were not exposed to flushing compound. These samples have no chlorine so that prior signature came from flushing compound.

Log Number: 4541629Logbook(s): 

• HCLOG
• ELOG
• INCLOG

Body: 

Looking at the archiver shows that the FSD trips for 3H03 node are coming from the FSD valve chassis that is connected to the 3H03 FSD node card.
I&C will replaced this chassis tomorrow when access is available.
https://tasklists.jlab.org/hclist/tasks/121044