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1L04-4 OLT

1 day 11 hours ago
Log Number: 4472906Logbook(s): Entry Makers: msmithBody: 

Cavity was struggling to come back when turning the zone on following the 1L10-2 FE Onset

msmith

Operator SIGN IN

1 day 13 hours ago
Log Number: 4472904Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             02/25/2026
SHIFT:               Owl

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

2L11-2 CWWT Faults

1 day 14 hours ago
Log Number: 4472903Logbook(s): Entry Makers: bschaumlBody: 

The highest GSET I can manage without the cavity tripping on CWWT is 6.6 MV/m. Updated ODVH to this value, though it was set at 6 MV/m for this reason at the end of last run.

bschauml

CREW CHIEF SIGN IN

1 day 14 hours ago
Log Number: 4472901Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-24-26
Time : 23:18:18
Day : Tuesday
Shift : Owl

Crew Chief : Deir
Program Deputy: Buttles
Team : A
Arm : RADCON
Designated SSO: Smith
LERF Operator:
Operators : Smith

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

Setting Injector Energy

1 day 15 hours ago
Log Number: 4472900Logbook(s): Entry Makers: bschaumlBody: 

After using LEMi to increase the GSET of 0L04-8, I set the injector energy to the 4D spectrometer. Dropping 0L04-8 by about 0.2 MV/m put the 4D00.XPOS at 0 mm, and ropping a further 0.1 MV/m put us at the center of the 4D00 viewer.

bschauml

2L25 Commissioning Swing Shift

1 day 16 hours ago
Log Number: 4472898Logbook(s): Body: 

Finished +/- 2kHz loop for cavity 7 then moved to gradient and FE measurement
For cavity 7: reached 22.4 MV/m before cavity quenched. No FE up to this gradient. Completed a one hour run at 21.9 MV/m
For cavity 5: Reached 21.6 MV/m. With a lower loaded Q (1.6E7), we're measuring 6 - 7 kW of Fwd Pwr. Seeing many waveguide vac and arc faults. May just call Emax at 21.6 MV/m.
Some mild FE above 20.5 MV/m ~ 400 mR/hr

drury

LEMi

1 day 16 hours ago
Log Number: 4472896Logbook(s): Tags: Body: 

LEMi 3.12 successfully applied the gradient profile to the injector with an elapsed time of 00:00:02.

bschauml

Shift Information

Shift Day
CEBAF Program
MCC Crew Chief Mock
MCC Operators Thomas
Program Deputy Schoene
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