Recent Log Entries

HDR C2 compressor update

Log Number: 3747821Logbook(s): Entry Makers: creelBody: 

The Hall D warm compressor C2 is a hermetically sealed unit.
Following the breaker trip earlier in the week we have determined that the motor has an internal shorted winding.
We have pulled our spare unit from storage and are currently replacing it. We are working some hours over the weekend but this work will take until some time next week to complete installation, cleanup, testing, and placing online.
The plant will operate normally without this compressor as long as there is no other problem with the remaining two compressors.

Operator SIGN IN

Log Number: 3747808Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Moser
DATE:             12/06/2019
SHIFT:               Swing

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

RF Health Check MYA

Log Number: 3747797Logbook(s): Tags: Body: 20 rows, time span -8h to 0 CRFP Cavity Channel MAX MIN MEAN SIGMA RMS 1L05-4 R154CRFP 119.08 0 1.16405 2.7235 2.96183 1L25-8 R1P8CRFP 3.5324 0.00299212 2.33448 0.728371 2.44547 1L25-2

Autolog save

Log Number: 3747795Logbook(s): Tags: Body: saver ran from opsl632

Saved: chumphry 12-06-19 16:19:26 {A:1 B:5 C:5 E:1050 A=BS B=CW C=BS D=CW 0R08=0.06 No dumps in.

Operator SIGN IN

Log Number: 3747789Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Humphry
DATE:             12/06/2019
SHIFT:               Swing

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

Compton Electron Detector FSD on 1H02 stuck

Log Number: 3747785Logbook(s): Body: 

I tried to change polarity of signal in the hall but the state of the FSD did not change.

If I could have a FSD expert to check it at next access that would be great.

I unplugged the cable so I would expect it to be clear now.

Hall A BCM Temperatures

Log Number: 3747776Logbook(s): Entry Makers: mussonkortzeBody: 

PM
J. Kortze contacted re. Hall A BCM temperature(s).....Elog #3747723.
Nominal cavity operating temperature is 110 F +/- 0.5 F. At this time, all cavities appear to be within tolerance. The reported "115.6" would indicate lack of regulation, and is the maximum the heaters can deliver; we have no record of any of the cavities reaching those tempratures.
Are there additional cavities in the Hall, which are not under Accelerator control?

J. Musson
x7441

CREW CHIEF SIGN IN

Log Number: 3747773Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 12-06-19
Time : 15:53:40
Day : Friday
Shift : Swing

Crew Chief : Aiken
Program Deputy: Malace
Team : F
Arm : Humphrey
Designated SSO: Moser
Operators : Humphrey, Moser

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

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