Recent Log Entries

Log Number: 4187059Logbook(s): 

• HALOG
• ELOG

Entry Makers: schoeneBody: 

Log Number: 4187051Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             09/25/2023
SHIFT:               Day

The operator has read the following:

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

Log Number: 4187050Logbook(s): 

• ELOG

Tags: 

• MCC8am

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: xA slow ramp to 30; xC down for

Log Number: 4187049Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Utilization and Availability Accelerator Beam Time Hour Total Experiment Beam Time Hour Total ABU BANU BNA

Log Number: 4187045Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Utilization and Availability Accelerator Beam Time Hour Total Experiment Beam Time Hour Total ABU BANU BNA

Log Number: 4187036Logbook(s): 

• ELOG
• LERFLOG

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

Date : 09-25-23
Time : 07:48:58
Day : Monday
Shift : Day

Crew Chief : Richardson
Program Deputy: Benesch
Team : X
Arm : Schoene
Designated SSO: Price
LERF Operator:
Operators : Price, Schoene

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

Log Number: 4187035Logbook(s): 

• ELOG

Entry Makers: emonkBody: 

Crew Chief requested that an image of the 1A and 2S SLM be noted in the log. Skewed beam on the 1A indicative of potential gang phase adjustment.

Figure 1: 1A SLM (Skewed Beam)

Figure 2: Graph of the Gang Phase Value for the North Linac (Adjusted)

Figure 3: 1A SLM (After Gang Phase Adjustment)

Log Number: 4187032Logbook(s): 

• ELOG

Body: 

Ops reviewed.

Log Number: 4187028Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause12038Title:
Hall A "BNR" for BigBite Magnet Trip

Summary:
Changing the hall status, and terminating beam while the hall works to bring up the BigBite magnet.

Log Number: 4187024Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause12037Title:
2L24 not recovering

Summary:
2L24 not recovering. Giving Cold window faults in cavities 3 and 8. Paged RF.

Log Number: 4187023Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause12037Title:
2L24 not recovering

Summary:
2L24 not recovering. Giving Cold window faults in cavities 3 and 8. Paged RF.

Log Number: 4187022Logbook(s): 

• ELOG
• RFLOG

Body: 

Arc detectors in 1L23-2, 1L24-1, 1L25-1, 1L25-7, 1L26-2, and 2L26-3 need to be replaced at first opportunity.

Log Number: 4187021Logbook(s): 

• ELOG

Entry Makers: emonkBody: Please call the MCC - ext: 7048 RF issues 2L24 on "turn on" fault, along with several other issues (cold window faults).

Log Number: 4187019Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: jhoward 09-25-23 07:17:10 {A:4 B:5 C:5 E:1047 A=BS B=BS C=BS D=BS 0R08=0.00 No dumps in.

Log Number: 4187016Logbook(s): 

• ELOG

Body: 

Okay to proceed using current work planning measures. Adjust planning as needed for any new hazards.

Log Number: 4187015Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG

Start of shift: xA changing to C-hole, xC 30uA on LH2. 

Log Number: 4187014Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4187012Logbook(s): 

• HALOG
• ELOG

Entry Makers: emonkBody: 

Hall A requested - 20uA of CW on "Pol He3 Cell".

Ion Chambers were calibrated.
Max Juice changed (25uA).

Figure 1: iCalibrate Settings (20uA with 30% Margin for - Pol He3 Cell)

Figure 2: Operational Restrictions

Figure 3: Hall A Target Verification Screen once raster, ion chambers, max juice, and XSOFs are set and target is in place

Log Number: 4187011Logbook(s): 

• ELOG

Body: Calibration ParametersHall:ATarget: Reference CellPass: 4Note: Refernce Cell/PolHe3Calibrated On:2023-Sep-15 12:15Calibrated By: schoeneFile:A-2023-09-15_1215_Reference_Cell_Pass-4.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4186997Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause12036Title:
BigBite Trip

Summary:
Hall requests BNR while they troubleshoot BigBite trips.Duration:
18 minutes

Time Down:
25-Sep-2023 06:18

Time Up:
25-Sep-2023