Aggregator

Log Number: 4513432Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: xB/C Beam

Log Number: 4513431Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4513423Logbook(s): 

• ELOG
• SRFLOG

Body: 

No major update.

Log Number: 4513421Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             06/18/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4513419Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             06/18/2026
SHIFT:               Swing

The operator has read the following:

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

Log Number: 4513394Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17203Title:
Hall D no beam due to MZAAS04 issue

Summary:
Hall D no beam due to beam transport blocked by MZAAS04.

Log Number: 4513393Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4513391Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4513385Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4513378Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

Per ELOG 4513078 last night, fig 1 shows a watchdog fault on a permanantly bypassed cavity and as Michael Geesaman stated, there is no communication on cavity 1 due to no RFCM to comm. with. It has to have a RD1 in for the RFCM due to the HV relay shorted to let the zone go into HV. No other signals are coming or going from the RFCM so a watchdog (comm error) on cavity will not drop or affect the zone in any way (same as 2L10-3 permantly bypassed ). In fig 1 capture you notice that all the other seven cavities have a Quench fault.

Log Number: 4513372Logbook(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)Compton1,839</

Log Number: 4513371Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4513336Logbook(s): 

• ELOG

Entry Makers: jonescBody: 

Liebert computer room conditioning system stopped cooling due to a condensate pump malfunction which automatically stops the system from cooling to stop the production of condensate and minimize water overflowing into the access flooring subfloor area. The condensate pump has been eliminated since a sanitary drain was closed enough to replace the condensate pumping system with a gravity condensate drain. Cooling has been restored.

For additional information or clarification, please contact Carroll Jones at 757-876-1778 or Mike Sprouse at 757-846-1707.

Log Number: 4513333Logbook(s): 

• ELOG

Entry Makers: dthomasBody: 

Log Number: 4513329Logbook(s): 

• HCLOG
• ELOG

Entry Makers: bbarkerBody: 

Log Number: 4513327Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4513326Logbook(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)Compton1,795</td

Log Number: 4513325Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4513323Logbook(s): 

• ELOG
• LERFLOG

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

Date : 06-18-26
Time : 11:25:22
Day : Thursday
Shift : Day

Crew Chief : Richardson
Program Deputy: Nissen
Team : X
Arm : Barker
Designated SSO: Thomas
LERF Operator:
Operators : Barker, Thomas

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

Log Number: 4513324Logbook(s): 

• HDLOG
• HALOG
• HCLOG
• HBLOG
• ELOG
• SADLOG

Tags: 

• PD

Entry Makers: nissenBody: 

The plan is to go down during the maintenance day next week and do a closer inspection to determine the course of action on repairing/replacing the magnet and beam pipe.

There will be a meeting to plan the maintenance day work at 9:00 am in the MCC conference room on Monday the 22nd.