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CREW CHIEF SIGN IN

16 minutes 45 seconds ago
Log Number: 4515466Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 06-23-26
Time : 07:26:51
Day : Tuesday
Shift : Day

Crew Chief : Blackshaw
Program Deputy: Nissen
Team : E
Arm : RadCon
Designated SSO: Janak
LERF Operator:
Operators : Humphry, Janak

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

MOLLER install 06/22/2026

45 minutes 30 seconds ago
Log Number: 4515455Logbook(s): Tags: Entry Makers: jonesgaskelldwineskashydougberdnikciprianBody: 

Hall A techs worked on installing cable tray support ramps and plexiglass protection covers, for water cooled leads, on Down Stream Enclosure section of beam line.

lhurt

2L25-4 arc fault - recovered

1 hour 45 minutes ago
Log Number: 4515441Logbook(s): Entry Makers: victorcBody: 

Very shortly after performing a phase offset optimization on cavity 6, it looks like cavity 4 tripped on an arc fault and took some other cavities out with it. Everything recovered fine.

victorc

MQB2L08 current instability

2 hours 18 minutes ago
Log Number: 4515430Logbook(s): Entry Makers: victorcBody: 

The current on this magnet looks to be getting noisier, sometimes crossing the upper current tolerance threshold and causing an alarm in the MCC. Voltage is steady. Could use a reseat or swap at next opportunity.

victorc

Autolog save

2 hours 27 minutes ago
Log Number: 4515425Logbook(s): Tags: Body: saver ran from opsl05

Saved: jhoward 06-23-26 05:17:43 {A:i B:1 C:3 E:1060 A=BS B=CW C=CW D=BS 0R08=69.96 No dumps in.
jhoward

1L15-2 Loss of RFCM Comm

2 hours 43 minutes ago
Log Number: 4515421Logbook(s): Entry Makers: kernsBody: 

RFCM loss of comm. prevented zone from going into filaments. Zone was originally GSET 0 for no KCCU after resistor was replaced 06/02/26 and most likely blew again 06/06/26. Tried RD1 and bypassing but that still did not clear the watchdog and HV enable faults. Had to restore comm's by installing a new RFCM just to regain comm's and clear these errors so that we could bypass the cavity and get the rest of the zone restored. RFCM will need RF downloads when we take the zone down for repairs and troubleshooting the "No KCCU problem.

kerns

FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor

2 hours 55 minutes ago
Log Number: 4515416Logbook(s): Tags: Body: System UN-Masking for: BeamLossMonitor
User: dchri
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T
dchri

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

3 hours 9 minutes ago
Log Number: 4515412Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: dchri
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T09<
dchri

Shift Information

Shift Day
CEBAF Program
MCC Crew Chief Blackshaw
MCC Operators Humphry, Janak
Program Deputy Nissen
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