Aggregator

Log Number: 4476191Logbook(s): 

• BTLOG
• ELOG

Entry Makers: alexsBody: 

Reached step 12, hand phasing cavities, in the cold startup procedure before VFV1L27 got stuck in Not Ready, preventing the FSD from clearing. Update while I&C troubleshoots: managed to steer to IPM1L28 and get a round spot at ITV1L22. LEM quads had to be scaled down to ~25% to get a circular spot. Before the vacuum issues began, as of this log were attempting hand phasing in the North Linac, but the ITV1S01 spot is a stripe, making identification of "good" phasing a challenge. Adjusting MQB1L28 was ineffective at rounding out the beam satisfactorily. Work continues...

Log Number: 4476190Logbook(s): 

• ELOG

Body: 

Signed on to PTW-7341 Rev. 2 to manipulate the vacuum controls in the field.
Heading out now with diagnostic equipment and a spare FCM card.

Log Number: 4476189Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

MQD1L02
MQD1L03
MQD1L04
MQD1L05
MQD1L06
MQD1L07
MQB1L08
MQB1L09
MQB1L10
MQB1L11
MQB1L12
MQB1L13
MQB1L14
MQB1L15
MQB1L16
MQB1L17
MQB1L18
MQB1L19
MQB1L20
MQB1L21
MQB1L22
MQB1L23
MQB1L24
MQB1L25
MQB1L26
MQB1L27
MQB1L28

Total Time: 1.250 mins

Log Number: 4476188Logbook(s): 

• ELOG

Entry Makers: shrinerBody: 

FSD tripped several times on VFV1L27 fault and the valve indicated "Not Ready," but the valve never closed. I&C on-call was contacted and they are going to power cycle the valve.

Log Number: 4476187Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Wednesday March 11 through 18:00 Thursday March 12 AES DC power Systems Replace Multiple 20A SCE

2026-03-12 15:03 - Jason Delk

MQL1A38 has faulte

Log Number: 4476185Logbook(s): 

• ELOG
• SLOG

Tags: 

• MCC8am
• Software and Controls

Body: 

Updating Wien Filter Controls for 140KV Operations
CED support for work on 2L03

Log Number: 4476182Logbook(s): 

• ELOG

Entry Makers: anthonyBody: 

Log Number: 4476180Logbook(s): 

• ELOG

Body: 

Restored 2L13-1 filaments and recovered all zone to RF. 1L04-6 Un-bypassed and restored RF to 12 Mv/m after correcting RFCM downloads from 01/26. 1L04-7 needs a 2.5W amp after RFCM output checked good. 1L04-8 Need to find cavity resonance after SRF Michael M checked tuner motor movement downstairs. Needs tuner cart without RF on in the zone and we need to check Camac tuner stepper card in the process. 2L10-1 and 7 comm's down but cav 8 is up and in filaments but still bypassed until other comm. problems looked at again (Evonda got cav. 8 into filaments from Fil. Low Volts).

Log Number: 4476179Logbook(s): 

• ELOG
• RADLOG

Entry Makers: anthonyBody: 

Log Number: 4476178Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl632

Saved: bjacob 03-12-26 16:22:17 {A:i B:5 C:2 E:345 A=BS B=BS C=BS D=BS 0R08=0.00 1R dump in. dump(s) in. Start-ish of swing.

Log Number: 4476177Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

MQD1L02
MQD1L03
MQD1L04
MQD1L05
MQD1L06
MQD1L07
MQB1L08
MQB1L09
MQB1L10
MQB1L11
MQB1L12
MQB1L13
MQB1L14
MQB1L15
MQB1L16
MQB1L17
MQB1L18
MQB1L19
MQB1L20
MQB1L21
MQB1L22
MQB1L23
MQB1L24
MQB1L25
MQB1L26
MQB1L27
MQB1L28

Total Time: 1.267 mins

Log Number: 4476176Logbook(s): 

• ELOG
• SRFLOG

Body: 

Hall D
- Leak check on tagger vacuum line with VIPAD00C passed
- Pump cart removed
- Pump down on VBV5C11A to VBVAD00 line, start VIP5C11B tomorrow

MYBBS06 - UHV cleaning in progress for vacuum components

Log Number: 4476175Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shenenberger
DATE:             03/12/2026
SHIFT:               Swing

The operator has read the following:

Log Number: 4476174Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shriner
DATE:             03/12/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4476171Logbook(s): 

• ELOG

Body: 

PTW on-issue. Hall WC concurs. Approved.

Log Number: 4476170Logbook(s): 

• ELOG

Body: 

Approved. Please coordinate with Hall B Work Coordinator.

Log Number: 4476165Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             03/12/2026
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4476160Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

MQA4A11
MBC4A11H
MQA6A11
MBC6A11H
MBC8A11H
MQA4A10
MBC4A10V
MQA6A10
MBC6A10V
MQA8A10
MBC8A10V
MBDAA10V
MBT2A14H
MQA6A09
MBC6A09H
MQA8A09
MBC8A09H
MQC2A13
MBT2A13V
MQA8A08
MBC8A08V
MBDAA09H
MQC2A11
MBT2A11H
MQA4A09
MBC4A09H

Total Time: 2.933 mins

Log Number: 4476152Logbook(s): 

• ELOG
• SRFTMLOG

Tags: 

• Testing

Entry Makers: Michael MorroneBody: 

Task: Verify Emax's for cavities 4-7 and perform 1 hr runs. Note: If Emax's are unchanged +/- 0.5 Mv/m a 1 hour run in not required.

Cavity 4
Emax per spreadsheet = 21.4 Mv/m.
Several attempts to verify Emax (21.7, 21.9, 22.15, 22.33, 22.36, 22.49 faults and/or quenches).
Started 1 hr run at 22.10 Mv/m at 13:54. Quenched at time 14:45. Discovered DecaRad HV button in OFF position.
Restarted 1 hr run at time 14:52 at 21.75 Mv/m. Completed at 15:52.

Setting up for Cavity 5

Log Number: 4476148Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 03-12-26
Time : 15:44:51
Day : Thursday
Shift : Swing

Crew Chief : Blackshaw
Program Deputy: Roblin
Team : E
Arm : Shriner
Designated SSO: Anthony
LERF Operator:
Operators : Shriner, Anthony, Shenenberger

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