Aggregator

COMMENT ON Investigate and Troubleshoot YBBS06 ARC7 Shunt failure

1 day 19 hours ago
Log Number: 4474620Logbook(s): Body: 

When turning on the ARC7 box supply, the YBBS06 shunt was still showing signs of the known issue. We have ruled out the shunt chassis, cabling going downstairs, the connections on the magnet for the shunt, and the magnet leads themselves to the magnet. The next thing that we can take a look at without needing access downstairs is taking an LCR meter and measuring the string. Paperwork to follow.

kevino

Gun HV Trip

1 day 19 hours ago
Log Number: 4474618Logbook(s): Entry Makers: bschaumlBody: 

We were running 60 uA CW to the ILD. First three valves closed and pressure spiked above 10^-4 on the gun pump. I didn't see anything on the DecaRADs at the time of the trip though there was a brief spike of 40 counts when the injector SME began sending CW. The gun pump appears to be pumping down very slowly, but is still at 10^-5 as I submit this log

bschauml

COMPLETED B53 CC network switch upgrade

1 day 20 hours ago
Log Number: 4474612Logbook(s): Body: 

Thank you for submission of this ATLis. I've added SYSADMIN for awareness. This work was completed Tu 2/24. When the work requires a PTW we ask that it be linked to the ATLis, either by entering the ATLis # in the ePAS Permit GUI during creation, or as a comment to the ATLis if the PTW has already been created.

moser

Operator SIGN IN

1 day 20 hours ago
Log Number: 4474609Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Schaumloffel
DATE:             03/05/2026
SHIFT:               Swing

The operator has read the following:
bschauml

Operator SIGN IN

1 day 20 hours ago
Log Number: 4474604Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Thomas
DATE:             03/05/2026
SHIFT:               Swing

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

COMMENT ON RF work for 2026 HCO

1 day 20 hours ago
Log Number: 4474594Logbook(s): Body: 

2L23/2L25 in HV and ready to turn over to SRF. 2L06-2L09 recovered to RF after IOCSL1B rebooted late last night, filament volts high on 2L08-3 and 2L09-3 cavities and had to bypass for filament board replacements. 2L15-3 RFCM checked out and needs a 2.5W amp replaced (staged a good one at zone. EPASS paperwork another 4 hours to close up three zones. Kerns and Johnson.

kerns

Shift Information

Shift Day
CEBAF Program
MCC Crew Chief Mock
MCC Operators Barker, Thomas
Program Deputy Schoene
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