Aggregator
SHIFT UPDATE: Preparing for linac access to take opportunistic thermal images
Box Supplies Were Turned Off
The following box supplies were TURNED OFF by version 2-16 of the Box Supply Cycling Script:
ARC1A Ramp Rate = 8.127 A/s
ARC2A Ramp Rate = 7.217 A/s
ARC3A Ramp Rate = 10.099 A/s
ARC4A Ramp Rate = 11.344 A/s
ARC5A Ramp Rate = 10.435 A/s
ARC6A Ramp Rate = 9.558 A/s
ARC7A Ramp Rate = 10.484 A/s
ARC8A Ramp Rate = 12.277 A/s
ARC9A Ramp Rate = 9.900 A/s
ARCAA Ramp Rate = 12.581 A/s
DOG1E Ramp Rate = 3.839 A/s
DOG2E Ramp Rate N/A
DOG3E Ramp Rate N/A
DOG4E Ramp Rate N/A
DOG5E Ramp Rate N/A
DOG6E Ramp Rate N/A
DOG7E Ramp Rate N/A
DOG8E Ramp Rate N/A
DOG9E Ramp Rate N/A
RSEP8A
twelfth pumpdown attempt
SHIFT UPDATE
"4 hour escalation contacts made via SMS"
Follow-up Re: Contacted SRF re: loss of 0L04 insulating vacuum
VIP0L01A has been enabled in alarm handler
VIP0L01 has been enabled in alarm handler
ATLis Comments Daily Digest
Conflicting Alarm Status for Injector SRF VIPs
The Alarm Handler monitors some of the SRF VIPs in the Injector, but the point at which it goes into alarm seems to differ from the Injector SRF vacuum screen. Originally this log entry was supposed to be about VIP0L05B, but while I was writing it, the same thing happened for VIP0L06A and VIP0L05A. All three valves were in alarm in the Alarm Handler, but were showing no alarms/faults on the vacuum screen.
Also while writing this entry, VIP0L01 went into alarm in the Alarm Handler AND showed up on the vacuum screen. All valves have the same HIHI limit of 1e-7.
FCAL lockup 8,14
VIP0L01A has been disabled in alarm handler
VIP0L01 has been disabled in alarm handler
0L04 module is dry, insulating vacuum climbing
Contacted SRF re: loss of 0L04 insulating vacuum
NLinac autopumpdown start
Injector vacuum started going downhill around VIP0L01
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 08-14-26
Time : 15:28:08
Day : Friday
Shift : Swing
Crew Chief : Forman
Program Deputy: Park
Team : X
Arm : Anthony
Designated SSO: Shriner
LERF Operator:
Operators : Anthony, Shriner
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
[Late Entry] Large NL GP shift during Thunderstorm
Noticed a lot of oscillation in the 1A SLM during the thunderstorm @~1320. Spent some time looking for bad actors but then noticed the beam spot looked quite different as well so I tried adjusting NL gang phase. Found it had shifted 4 degrees.










