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iCalibrate: Hall D

20 hours 10 minutes ago
Log Number: 4503825Logbook(s): Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa
yoon

Injector interception & effects

22 hours 3 minutes ago
Log Number: 4503802Logbook(s): Entry Makers: dchriBody: 

Fig. 1
Noticed A3 interception would gently rise into FSD trip again and again. Eventually, A3 interception will hit a peak of ~0.5 and plummet to essentially zero.

Fig. 6,7
Repeated BLA trips from suspected injector discharge

Once after beam is restored, A4 interception will spike up and then drop by ~30% or so and flatten out

Some following trends to the A3 rise are shown in the Figures below,

BPM 0I05
BPM 0L09
Hall D current and Ion Chambers
...

dchri

Operator SIGN IN

22 hours 53 minutes ago
Log Number: 4503796Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Christian
DATE:             05/24/2026
SHIFT:               Swing

The operator has read the following:
dchri

Adj GP to lower 6S01 IDX rates

1 day ago
Log Number: 4503780Logbook(s): Entry Makers: yoonBody: 

Noticed the 1A SLM looked terrible and 6S01 IDX was increasing, so tried to fix that. The spot looked much better after moving the NL GP knob to the left, but I noticed a spike in 6R10 and 5S01 IDX so I backed off some of those changes. Beam doesnt look as nice on the SLM but the IDX rates were better.

Fig 1) 1A SLM before
Fig 2) 1A SLM after first correction
Fig 3) 1A SLM after backing off some of the corrections
Fig 4) plot of these 3 IDX vs GP
Fig 5) IDX summary after adjustments

yoon

Operator SIGN IN

1 day 2 hours ago
Log Number: 4503762Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Yoon
DATE:             05/24/2026
SHIFT:               Swing

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

CREW CHIEF SIGN IN

1 day 3 hours ago
Log Number: 4503750Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 05-24-26
Time : 15:30:57
Day : Sunday
Shift : Swing

Crew Chief : Forman
Program Deputy: Saitiniyazi
Team : X
Arm : Christian
Designated SSO: Yoon
LERF Operator:
Operators : Christian, Yoon

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

iCalibrate: Hall D

1 day 4 hours ago
Log Number: 4503726Logbook(s): Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdSetpoint Current:25.00 nanoAmpsSetpoint Margin:25%<h3 style="color: gold; background-color: purple
chumphry

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Forman
MCC Operators Christian, Yoon
Program Deputy Saitiniyazi
Announcements

Access Status

Recent PSS History

recent pss history graph