LERF Operator Shift Log, 2026-08-20 DAY
Log Number: 4543994Logbook(s): Tags: Body:
LERF SHIFT LOG
Summary
Start of shift: LERF to Power Permit.
Aggregator
Bleedthrough Measurements for Hall D
Bleedthrough Measurements for Hall C
Bleedthrough Measurements for Hall B
Bleedthrough Measurements for Hall D
Bleedthrough Measurements for Hall C
Bleedthrough Measurements for Hall B
State of the machine
Log Number: 4543985Logbook(s): Entry Makers: kpriceBody:
Injector is in Beam Permit. North Linac, South Linac, and BSY are in Power Permit. Halls B, C, D, and D Tagger are in Restricted Access. ATLis 121132 (https://tasklists.jlab.org/atlis/tasks/121132) is underway in the South Linac. SWList 120485 (https://tasklists.jlab.org/swlist/tasks/120485) is underway in the Injector.
At the request of DC Power all 10 A trims beyond 1D have been set to zero current, and all 20 A trims have been set to zero current and turned off.
LERF is in Power Permit, likely for the duration of the shift.
QuickPic - Channel Access for LCLS II Testing Opened
"Testing Bleedthrough Script"
All 10 A Trims Set to 0 A, 20 A Supplies Turned Off
Log Number: 4543969Logbook(s): Entry Makers: bschaumlBody:
At the request of DC Power, via Director of Operations, I zeroed the current for all 10 A trims apart from those required for running to the 1D dump and turned off the supplies for all 20 A trims. All rack supplies were left on, per request.
Fig 1-6: Trim Rack Summary as found, when all trims outside the injector were zeroed, and after all downstream of 0I06A were zeroed, interleaved with the configuration for the Global Trim Control script at each step.
Fig. 7-9: Racks with trims required for running to 1D.
CREW CHIEF SIGN IN
Log Number: 4543960Logbook(s): Body:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 08-20-26
Time : 16:08:30
Day : Thursday
Shift : Swing
Crew Chief : Price
Program Deputy: Park
Team : D
Arm : RadCon
LERF Operator:
Operators : Swing SSO Schaumloffel, Owl SSO Christian
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 : 08-20-26
Time : 16:08:30
Day : Thursday
Shift : Swing
Crew Chief : Price
Program Deputy: Park
Team : D
Arm : RadCon
LERF Operator:
Operators : Swing SSO Schaumloffel, Owl SSO Christian
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
Autolog save
Operator SIGN IN
LOPW and PMES alarms removed from 0L02 and 0L04
Log Number: 4543955Logbook(s): Body:
Audit of the RF alarms found that the LOPW and PMES pvs are not configured to alarm for 0L02 and 0L04.
Configuration of these alarms will need to be defined by the SME and provided to Kyle for implementation.
In the meantime, these alarms will be removed from the Injector Alarm Handler
Crew Chief Shift Log, 2026-08-20 DAY
Log Number: 4543953Logbook(s): Tags: Body:
CEBAF SHIFT LOG
Shift Summary
Start of shift: Resumed control of CC cell phone.
Crew Chief Timesheet Summary: 20 Aug 2026 DAY
Log Number: 4543952Logbook(s): Tags: Body:
Accelerator
PHYSICS
STUDIES
RESTORE
ACC
DOWN
OFF (SAM)
Planned
0
0
0
CIS: Final HV QE scan after Spring Run
Log Number: 4543934Logbook(s): Entry Makers: gramesbrukerBody:
Performing HV QE scan of photocathode puck #3, this is the final scan from the FY26 Spring run.
https://tasklists.jlab.org/bslist/tasks/120356
Last HV QE scan 8/4/26 is here - https://logbooks.jlab.org/entry/4537603
Fig. 1 - present spot location
Using C laser, like last HV QE scan on 8/4/26
Save before HV QE scan spot 13400/18900 - #27611
Fig. 2 - here's the last HV QE scan on 8/4
I checked that atten=273 produced >1 on first 3 BPM's at four corners of Fig. 2.
Then calibrated, successfully.
Fig. 3 - Then 15 x 15 grid in the calibration box.
Backout successful.
Fig.
iocsoftnl05rf restored
Log Number: 4543924Logbook(s): Tags: Body: restorelib 3.0.1
Target restore date was 2026-08-20 14:26:10
The output from the myRestore execution was as follows:
iocsoftnl05rf
<NOTE> rf3int: Provided macro *IOC* is never used
<NOTE> rf3int: Provided macro *REBOOTPATH* is never used
<NOTE> rf3hpa: Provided macro *IOC* is never used
<NOTE> rf3hpa: Provided macro *REBOOTPATH* is never used
<NOTE> rf3stp: Provided macro *IOC* is never used
<NOTE> rf3stp: Provided macro *REBOOTPATH* is never used
<NOTE> rf3fcc1: Provided macro *IOC* is never used
<NOTE> rf3f
COMMENT ON Admin LOTO Evaluation
Shift Information
| Shift | Day |
|---|---|
| CEBAF Program | |
| MCC Crew Chief | Howard |
| MCC Operators | Barker, Anthony, Smith |
| Program Deputy | Park |
| Announcements |
Access Status
Recent PSS History
