Aggregator

South Cryo performing much better than North (RF on --> off)

21 hours 49 minutes ago
Log Number: 4471549Logbook(s): Entry Makers: dchriBody: 

Seems like the SL heater adjustment suggestions (see linked elog) are holding up well (Fig.1)
Although, as of late, SL seems to have always done reasonably well (Fig.2)

FIG.1
Today, South linac RF On (~367 MeV) --> Off

FIG.2
Last time, South linac RF On (~216 MeV) --> Off

... as for the North, why not it so be as good? (*-*)
perhaps someone from CLOG could bless me with some insight?

dchri

Follow up: gun drop troubleshooting

22 hours 13 minutes ago
Log Number: 4471544Logbook(s): Entry Makers: chgarciaBody: 

No evidence of field emission triggering the gun HV drop on 02-16-2026 at 19:09, figure 1.
Figure 2 shows the gun interlocks. Notice there was a gun HV drop caused by PSSA and PSSB at 14:07 also on 02-16-2026.

chgarcia

CREW CHIEF SIGN IN

22 hours 31 minutes ago
Log Number: 4471541Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 02-17-26
Time : 07:16:41
Day : Tuesday
Shift : Day

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

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

QE Measurement

23 hours 6 minutes ago
Log Number: 4471537Logbook(s): Body: Spot Location: (13250,19250), Charge: 1.823177

Laser Wavelength Atten Setting Laser Power Current HV PS Current QE PV Updated? Update Time/Reason Not Updated (nm) (W) (uA) </
dchri

iocsoftw3spce restored

1 day 2 hours ago
Log Number: 4471531Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-02-17 02:44:08 The output from the myRestore execution was as follows: iocsoftw3spce systemEnum@2026-02-17 02:44 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftw3spce (success) PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 Procedure return status: Success
alarms

iocsoftw3spce restored

1 day 3 hours ago
Log Number: 4471530Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-02-17 02:44:08 The output from the myRestore execution was as follows: iocsoftw3spce systemEnum@2026-02-17 02:44 2(2) restored Execute: /usr/csite/certified/bin/ced2Epics -ced ced -A -i iocsoftw3spce (success) PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 PVs modified: 0 Procedure return status: Success
alarms

Wrapping Up Low Energy Work for the Night

1 day 4 hours ago
Log Number: 4471529Logbook(s): Body: 

Downloaded the design values from edt with the 345_setup workspace and took some baseline pre-match harp swipes. These were pretty far off design, but not so bad as to be unmatchable. Ran zigzag for both planes with IHA0L10, which required a bit of fiddling to get the right K1 range. The match converged on the first try without having to open up tolerances and calculated quad setpoints seemed fairly reasonable. Harp swipes post match weren't great, but seemed like something we might be able to iterate on.

bschauml

Shift Information

Shift Owl
CEBAF Program
MCC Crew Chief Price
MCC Operators Christian
Program Deputy Buttles
Announcements

Access Status

Recent PSS History

recent pss history graph