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The following cavities have been UnGSET 0: 1L12-8

9 hours 8 minutes ago
Log Number: 4504955Logbook(s): Tags: Body: 

The following cavities have been UnGSET 0:
1L12-8
Username: jhoward
Date/Time: 05-27-26_04:49:45
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - Trying to compensate for 1L10
Special Instructions: , HPA breaker tripped

Maintenance Tag: Component: Operator Entry - See SME

jhoward

The following cavities have been UnGSET 0: 1L12-7

9 hours 8 minutes ago
Log Number: 4504954Logbook(s): Tags: Body: 

The following cavities have been UnGSET 0:
1L12-7
Username: jhoward
Date/Time: 05-27-26_04:49:45
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - Trying to compensate for 1L10
Special Instructions: , HPA breaker tripped

Maintenance Tag: Component: Operator Entry - See SME

jhoward

iCalibrate: Hall D

10 hours 41 minutes ago
Log Number: 4504928Logbook(s): Body: Calibration ParametersHall:DTarget: JD70-107 55um 45/135 degPass: 5.5Note: Calibrated On:2026-May-03 18:47Calibrated By: alexsFile:D-2026-05-03_1847_JD70-107_55um_45_135_deg_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)
victorc

A1 interception lock, part 2

10 hours 48 minutes ago
Log Number: 4504927Logbook(s): Entry Makers: kpriceBody: 

A period of relative stability started when Hall C dropped current from 50 -> 28 uA at 15:45. The A1 interception locks were turned on at 17:08, which seems to be driving loss up at 2C00, and slightly increasing interception on A1. The discharge at 01:30 reduced both briefly.

kprice

A1 interception lock

11 hours 5 minutes ago
Log Number: 4504923Logbook(s): Entry Makers: kpriceBody: 

Yes, I'm still on about this. Reminder that there's a gain switch on IPM0I01 around 25 uA from the gun, which will throw positions if the lock is engaged in two different current regimes, i.e., if Hall C wants to run below 25 uA the A1 interception lock will try to restore the rels from the low-gain/high-current regime. The difference is about 0.2 mm in x and y, a shift that in the past was large enough to be noticeable throughout the machine. My slides about this from 2024 are attached to elog 4248169 (linked).

kprice

iocsoftw3spce restored

11 hours 20 minutes ago
Log Number: 4504918Logbook(s): Tags: Body: restorelib 3.0.1 Target restore date was 2026-05-27 02:32:09 The output from the myRestore execution was as follows: iocsoftw3spce systemEnum@2026-05-27 02:32 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

What if it's not (just?) north linac gangphase?

11 hours 36 minutes ago
Log Number: 4504912Logbook(s): Entry Makers: kpriceBody: 

The injector energy lock did That Thing again, where it suddenly drops 0.1 MV/m for no presently obvious reason. It coincided with the 1A SLM spot stretching way out, which we would normally correct with gangphase. This time I tried pushing the gradient back up in 0L04 without making any changes to gangphase, and the spot rounded right back up and loss dropped to prior levels.

kprice

iCalibrate: Hall D

11 hours 50 minutes ago
Log Number: 4504907Logbook(s): Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa
victorc

Operator SIGN IN

13 hours 45 minutes ago
Log Number: 4504882Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             05/27/2026
SHIFT:               Owl

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

Operator SIGN IN

13 hours 47 minutes ago
Log Number: 4504881Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             05/26/2026
SHIFT:               Owl

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

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