Aggregator

Hall C FFB Operations Analysis

22 hours 51 minutes ago
Log Number: 4515009Logbook(s): Entry Makers: nserenoBody: 

Took open/closed loop data for Hall C FFB system on swing shirt 6/21/2026. Hall C beam current and energy were 70 uA and 6480 MeV as given by PVs: ibcm1 and MMSHLCE.

We were able to get 25 data sets closed loop before FSD trips disabled the system. Similarly we were able to get 41 data sets open loop after requesting the operations crew put the system in "pause" mode to take data. Typically we usually take 100 data sets for both open and closed loop conditions but the frequency of FSD trips prevented that this time.

nsereno

Operator SIGN IN

23 hours 19 minutes ago
Log Number: 4515006Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Humphry
DATE:             06/22/2026
SHIFT:               Day

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
chumphry

Operator SIGN IN

23 hours 28 minutes ago
Log Number: 4515001Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Janak
DATE:             06/22/2026
SHIFT:               Day

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log
janak

1L25 Vacuum Faults Investigation

23 hours 35 minutes ago
Log Number: 4515000Logbook(s): Body: 

Called in regards to beamline faults at 1L25 yesterday. Looked at the archiver today and noticed spikes on VIP1L25B hitting just past the slow trip setpoint. Looking adjacent zones/pumps shows increased beamline vacuum as far as 1L22 to the end of 1L26 since June 1st at around 9-10AM. Only thing I could find for that day was SRF/RF work at 1L25 : https://logbooks.jlab.org/entry/4507348

mathewam

CREW CHIEF SIGN IN

23 hours 40 minutes ago
Log Number: 4514999Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 06-22-26
Time : 07:55:27
Day : Monday
Shift : Day

Crew Chief : Blackshaw
Program Deputy: Nissen
Team : E
Arm : RadCon
Designated SSO: Humphry
LERF Operator:
Operators : Humphry, Janak

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

Phaser Results

23 hours 48 minutes ago
Log Number: 4514994Logbook(s): Body: Results where Job # is 1021 {64} CAVITY PHASE ERROR (DEGREES) OUTCOME PHASE (DEGREES) START DATE DURATION (SECONDS) CORRECTION DATE CORRECTION ERROR REASON 2L14-1 1.00 CORRECTED 108.01 22-Jun-2026 05:25 59<
jhoward

Shift Information

Shift Day
CEBAF Program
MCC Crew Chief Blackshaw
MCC Operators Humphry, Janak
Program Deputy Nissen
Announcements

Access Status

Recent PSS History

recent pss history graph