Aggregator

Heat Monster 1L11-4,5,6,7,8

20 hours 37 minutes ago
Log Number: 4472711Logbook(s): Entry Makers: deirBody: 

Cav 5 was taken yesterday, Fig 2. Bypassed it shortly after as it dropped the zone out of HV again.

Strong JT responses from cavities 4 and 5.

deir

QE Measurement

21 hours 35 minutes ago
Log Number: 4472708Logbook(s): Body: Spot Location: (13250,19250), Charge: 3.796249

Laser Wavelength Atten Setting Laser Power Current HV PS Current QE PV Updated? Update Time/Reason Not Updated (nm) (W) (uA) </
msmith

Noisy VDP1L27 and VPG1L27 signals

21 hours 38 minutes ago
Log Number: 4472707Logbook(s): Entry Makers: deirBody: 

Found VFV1L27 closed, wasn't sure why. All vac signals on the SRF screens looked okay. Plotted the surround vac signals to see and saw the noisy behavior shown in Fig 3. I figured this is what caused it to closed. Was able to open it again with no issues and it hasn't closed since, despite the noise.

deir

2L08 ramped to ODVHs

23 hours 23 minutes ago
Log Number: 4472702Logbook(s): Entry Makers: msmithBody: 

Cav-1: Pushed to the ODVH but there have been multiple Arcs and a couple quenches so I have lowered it by 0.5 MV/m
Cav-2: Pushing this cavity above ~7.0 shows a large increase in beamline vacuum. Leaving at 6.6 for now
Cav-3: Bypassed

Cav-5: GLDER warning. OLT'd
Cav-6: Pushed to the ODVH value but I lowered it to 7.0 due to frequent Arc faults.

Cav-8: Not READY in SRM by RF

msmith

Operator SIGN IN

1 day 3 hours ago
Log Number: 4472696Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             02/23/2026
SHIFT:               Owl

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

CREW CHIEF SIGN IN

1 day 4 hours ago
Log Number: 4472695Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-23-26
Time : 23:16:23
Day : Monday
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

Shift Information

Shift Owl
CEBAF Program
MCC Crew Chief Deir
MCC Operators Smith
Program Deputy Buttles
Announcements

Access Status

Recent PSS History

recent pss history graph