Aggregator
Autolog save
Laser C Set to 500 MHz
Backing out of Hall C 500->250 MHz change at request of the hall
COMMENT ON Flush MJC5A21
Critical Viewer HCO 6-30-26
"0R08 In-Line Dump is locked out in the IN position"
CREW CHIEF SIGN IN
Log Number: 4518648Logbook(s): Body:
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 06-30-26
Time : 07:18:32
Day : Tuesday
Shift : Day
Crew Chief : Schoene
Program Deputy: Nissen
Team : B
Arm : Thomas
Designated SSO: Barker
LERF Operator:
Operators : Barker, Thomas
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 : 06-30-26
Time : 07:18:32
Day : Tuesday
Shift : Day
Crew Chief : Schoene
Program Deputy: Nissen
Team : B
Arm : Thomas
Designated SSO: Barker
LERF Operator:
Operators : Barker, Thomas
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
Crew Chief Shift Log, 2026-06-30 OWL
Log Number: 4518647Logbook(s): Tags: Body:
CEBAF SHIFT LOG
Shift Summary
Start of shift: Down for Arc5 Overtemp, SL in PP
Crew Chief Timesheet Summary: 30 Jun 2026 OWL
Log Number: 4518646Logbook(s): Tags: Body:
Accelerator
PHYSICS
STUDIES
RESTORE
ACC
DOWN
OFF (SAM)
Planned
7
0
0
APPROVED RF Maintenance June 30th, 2026
APPROVED Flush MJC5A21
Hall D Harps - HCO complete
HarpFitter: IHAAD00C
HarpFitter: IHA5C11B
HarpFitter: IHA5C11
HarpFitter: IHA5C00
Downtime Incident CLOSED: ARC5A trips on Magnet overtemp fault
Injector match succesful
Log Number: 4518635Logbook(s): Entry Makers: samariBody:
With IHA0L09 I was able to compute a good match. The emittance difference between the harps is very puzzling (5x bigger at IHA0L09), but given the very clean 0R05 profile and the 0L10 swipe matching sqrt(betas x emittances) (.8859 x .5806 expected, .8627 x .5847 measured), I think it was a success.










