Aggregator

Hall B Optics tuning commences

17 hours 36 minutes ago
Log Number: 4501207Logbook(s): Entry Makers: samariBody: 

Closed the slit for Hall A/D to 23, which eliminated the bleedthrough from hall C into hall B. I was able to send the 2 nA CW for swipes with minimal upstream rates.

samari

Operator SIGN IN

18 hours ago
Log Number: 4501203Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Samari
DATE:             05/19/2026
SHIFT:               Owl

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

Operator SIGN IN

18 hours 2 minutes ago
Log Number: 4501202Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             05/18/2026
SHIFT:               Owl

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

1L10-8 needs re-optimizing for 17 MV/m

18 hours 6 minutes ago
Log Number: 4501200Logbook(s): Entry Makers: alexsBody: 

After recovering zone HV from the waveguide pressure permissive drop, cavity 8 was stuck in SEL, and wouldn't even go to SELA. Tried adjusting KPOWscale, POFF, and DETApl to no avail. After conferring with RF, agreed to bring it up at 16 MV/m since that worked and leave it at that for the night. Next time a maintenance window comes along, hopefully an SME can re-optimize the cavity for its drive high.

alexs

Machine Update

18 hours 9 minutes ago
Log Number: 4501196Logbook(s): Entry Makers: deirBody: 

Currently we have CW to C and D. Hall C is requesting 40 uA, but we can't send more than 36 uA without tripping BLA. This could be a calibration issue. I'm looking into machine loss at the moment to determine if that's if the case.

Hall B Tagger is on but tuning is ongoing. We have significant bleedthrough going into xB from the A slit again as we expected. We are going to have to neck down the A Slit (Hall D) in order to send 40 uA to xC and it be acceptable for Hall B.

deir

CREW CHIEF SIGN IN

18 hours 11 minutes ago
Log Number: 4501194Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 05-19-26
Time : 00:03:06
Day : Tuesday
Shift : Owl

Crew Chief : Deir
Program Deputy: Drury
Team : A
Arm : Smith
Designated SSO: Samari
LERF Operator:
Operators : Samari, Smith

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

smartRAT Cavity Instability Detection Daily Report

18 hours 15 minutes ago
Log Number: 4501189Logbook(s): Entry Makers: dturnerBody: smartRAT V3-4 on opsrfdaqnl1

To view waveforms from a timestamp:

ssh opsrfdaqnl1 "smartRAT -m DAQ -d /data/fast_daq/<timestamp>"


To view waveforms of the top 25 from this report:

ssh opsrfdaqnl1 "smartRAT_view_daily_top25 2026-05-11-2026-05-18"


Data directory: /cs/prohome/apps/s/smartRAT2/3-4/fileio/pca_data/output_cavityOutDet/calibrated_cavitylevel_centralize_tsfresh_minimal_gmespmes/whole/rcntnp/2026-05-11-2026-05-18/PCA/
dturner

iCalibrate: Hall C

19 hours 39 minutes ago
Log Number: 4501153Logbook(s): Body: Calibration ParametersHall:CTarget:Loop 2 10cmPass:3Note:Calibrated On:2026-May-18 22:28Calibrated By:shrinerFile:C-2026-05-18_2228_Loop_2_10cm_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton20,000</td
shriner

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Richardson
MCC Operators Anthony, Shenenberger, Shriner
Program Deputy Drury
Announcements

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Recent PSS History

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