Aggregator

Autolog restore

1 day 18 hours ago
Log Number: 4473311Logbook(s): Tags: Body: saver ran from opsl632
Data from: /usr/opdata/burt/allsnap/02-20-26_10:39:09
Restored file: /tmp/02-27-26_07:36:57.snap


downloading MOLLER V=H=0
samari

Autolog save

1 day 18 hours ago
Log Number: 4473310Logbook(s): Tags: Body: saver ran from opsl632

Saved: samari 02-27-26 07:36:42 {A:5 B:3 C:1 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. Autosave prior to restore.
samari

CREW CHIEF SIGN IN

1 day 19 hours ago
Log Number: 4473308Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-27-26
Time : 07:09:27
Day : Friday
Shift : Day

Crew Chief : Humphry
Program Deputy: Schoene
Team : X
Arm : RadCon
Designated SSO: Thomas
LERF Operator:
Operators : Barker, Thomas

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

QE Measurement

1 day 19 hours ago
Log Number: 4473303Logbook(s): Body: Spot Location: (13250,19250), Charge: 4.23076

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

1L21-5 OLT

1 day 20 hours ago
Log Number: 4473301Logbook(s): Entry Makers: msmithBody: 

This cavity continues to struggle. I have OLT'd it and it seems to be doing a bit better but im not hopeful it will stay that way.

msmith

1L21-5 reduced gradient

1 day 23 hours ago
Log Number: 4473299Logbook(s): Entry Makers: msmithBody: 

Cavity has SOS'd while 5MV/m multiple times this shift. OVDH is 3.9 and the target gset is 0 so I've reduced it to 3.9 for now.

msmith

1L10-{1, 5} FE onset

1 day 23 hours ago
Log Number: 4473297Logbook(s): Entry Makers: kpriceBody: 

Cavity 1: Decarads 1 and 10 ~7000. ~12.3 MV/m starting.

Cavity 5: Decarad 10 ~9700. ~11.8 MV/m starting.

Turned Decarad HV off and restored initial GLOS values. Also put linac quads back where I found them.

kprice

1L05-{2, 5, 7} FE onset measurements

2 days ago
Log Number: 4473293Logbook(s): Entry Makers: kpriceBody: 

Cavity 2: Took one set of measurements with background that was too high, so killed that file and fixed the background situation with linac quads. Let vacuum settle for a long time before taking second run, as Decarads quieted along with recovering vacuum. Started at ~14.3 MV/m; Decarad 9 at ~8700.

kprice

2L13 cavities found off target gsets

2 days 1 hour ago
Log Number: 4473289Logbook(s): Entry Makers: msmithBody: 

Found cavities 3 and 4 sitting below their target gsets and cavity 5 sitting a little high. Nothing was in the logbook about 3 and 4, cavity 5 was OLT's on swing and brough back a little high. I walked everything back to their target gsets.

msmith

Operator SIGN IN

2 days 2 hours ago
Log Number: 4473286Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             02/26/2026
SHIFT:               Owl

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

Injector Work Summary

2 days 3 hours ago
Log Number: 4473284Logbook(s): Entry Makers: samariBody: 

Starting by loading up the updated setup_345 design values. After a while of trying to figure out a solution to the problem of much more emittance in both X and Y than expected and overall puzzling optics beyond what either Victor or I could backpropagate, Victor and I realized by varying 0L02/A quads while looking at ITV0L03 that the beam was extremely coupled. We empirically set MQS0L01 to -10 G/cm and found that it uncoupled the planes well. This is a definite mystery, as we should have no coupling and the degrader solenoid is off.

samari

1L19 RF off until readied in SRM

2 days 3 hours ago
Log Number: 4473282Logbook(s): Entry Makers: victorcBody: 

Ops got the verbal OK from RF SME to turn 1L19 back on after the bad 5V supply was replaced, fixing the arc test fault issues. However, the zone is currently not marked readied in the SRM so, until that happens, Ops will keep RF off for 1L19.

victorc

Shift Information

Shift Owl
CEBAF Program
MCC Crew Chief Price
MCC Operators Howard
Program Deputy Schoene
Announcements

Access Status

Recent PSS History

recent pss history graph