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iCalibrate: Hall C

1 day 8 hours ago
Log Number: 4513326Logbook(s): Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 3Note: Calibrated On:2026-Jun-15 07:14Calibrated By: samariFile:C-2026-06-15_0714_10cm_Dummy_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,795</td
bbarker

CREW CHIEF SIGN IN

1 day 8 hours ago
Log Number: 4513323Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 06-18-26
Time : 11:25:22
Day : Thursday
Shift : Day

Crew Chief : Richardson
Program Deputy: Nissen
Team : X
Arm : Barker
Designated SSO: Thomas
LERF Operator:
Operators : Barker, Thomas

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

PD UPDATE: Plan for MZAAS04 work

1 day 8 hours ago
Log Number: 4513324Logbook(s): Tags: Entry Makers: nissenBody: 

The plan is to go down during the maintenance day next week and do a closer inspection to determine the course of action on repairing/replacing the magnet and beam pipe.

There will be a meeting to plan the maintenance day work at 9:00 am in the MCC conference room on Monday the 22nd.

nissen

MQA8R10 Mismatched

1 day 10 hours ago
Log Number: 4513284Logbook(s): Entry Makers: bbarkerBody: 

Swapping trim card caused mismatch of two djacent channels in this rack. Recovered to setpoint fine, will cycle at next FSD trip.

bbarker

Follow-up Re: 2L25-1 & 8 Cold IR sensors responding backwards

1 day 10 hours ago
Log Number: 4513276Logbook(s): Body: 

these were responding the right way last run. None of the cables or chassis were replaced during the SAM other than the cryomodule. For these two cavities, it is as if we are running with no interlock on the window temperature. Set point for the trip is positive and the readback is negative. This will never trip even if it exceeds -4V

bachiman

Operator SIGN IN

1 day 12 hours ago
Log Number: 4513244Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Barker
DATE:             06/18/2026
SHIFT:               Day

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

Operator SIGN IN

1 day 12 hours ago
Log Number: 4513243Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             06/18/2026
SHIFT:               Day

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

put dump IC tolerance thresholds more conservative

1 day 12 hours ago
Log Number: 4513242Logbook(s): Entry Makers: samariBody: 

Lowered to 50 and 65% respectively and got nuissance diffuser trips even without the ion chamber current dropping anywhere near the dynamic threshold (see fig 1). I bumped both up 15%, to 65 and 80 % for IC 1 and 2 respectively. I then lowered threshold for IC 1, which doesn't trip all the way down to 20% (fig 2). The behavior seemts to point to something being odd with IC 2? Final settings in fig 3

samari

COMMENT ON Inspect and/or Replace ML DAQ chasssis in NL

1 day 12 hours ago
Log Number: 4513233Logbook(s): Body: 

On the next maintance day, I would like to work with this chassis one more time before closing out this ATLiS / Epass.

Since we had to remove the attenuator boards, the signal read back levels are clipping. I think that I have a solve for this, but it involves swapping out the internal ADC boards with a modified version. I am working with the fab shop to do these changes on some spare boards. My plan would be to perform the board swap in situ (with chassis power off of course) and see if this takes care of the clipping.

latshaw

CREW CHIEF SIGN IN

1 day 13 hours ago
Log Number: 4513228Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 06-18-26
Time : 07:22:04
Day : Thursday
Shift : Day

Crew Chief : Schoene
Program Deputy: Nissen
Team : B
Arm : Thomas
Designated SSO: Barker
LERF Operator:
Operators : Barker, Thomas

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

Shift Information

Shift Swing
CEBAF Program
MCC Crew Chief Forman
MCC Operators Anthony, Smith
Program Deputy Nissen
Announcements

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Recent PSS History

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