Aggregator

Log Number: 4482783Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-04-02 03:49:41. The application phase took 00:00:15 to complete.

Log Number: 4482782Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been UnGSET 0:
2L20-5
Username: kprice
Date/Time: 04-02-26_03:47:18
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - Determined cavity was GSET0 by mistake; recovered
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4482781Logbook(s): 

• DCLOG
• ELOG

Entry Makers: victorcBody: 

At least 8 mismatches the past week. Always retakes setpoint fine. Could use a trim card swap at next opportunity. Not sending beam through here at the moment, but will probably be doing so in a few days.

E101B11, channel 17, 10 Amp

Log Number: 4482780Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16600Title:
SHMS problems

Summary:
Hall C requested no beam to troubleshoot SHMS.Duration:
2 minutes

Time Down:
02-Apr-2026 03:42

Time Up:

Log Number: 4482779Logbook(s): 

• HCLOG
• ELOG

Entry Makers: kpriceBody: 

Log Number: 4482769Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-04-02 02:20:03 The output from the myRestore execution was as follows: iocsoftw3spce systemEnum@2026-04-02 02:20 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

Log Number: 4482759Logbook(s): 

• DCLOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4482758Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been GSET 0:
2L20-5
Username: kprice
Date/Time: 04-02-26_00:29:14
RF Status: Bad
Tuner Status: Good
Comment: GSET 0 - stepped off +100k - not stepped off, investigating why it was manually GSET0 on 31 Mar
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4482752Logbook(s): 

• HCLOG
• ELOG

Entry Makers: kpriceBody: 

Log Number: 4482751Logbook(s): 

• HCLOG
• ELOG

Entry Makers: kpriceBody: 

Log Number: 4482750Logbook(s): 

• HCLOG
• ELOG

Entry Makers: kpriceBody: 

Log Number: 4482749Logbook(s): 

• HCLOG
• ELOG

Entry Makers: kpriceBody: 

MaxJuice is 45 uA. Ion chambers set for 40 uA with 30% margin. 2 x 2 raster was already on, no other changes.

Log Number: 4482748Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             04/02/2026
SHIFT:               Owl

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4482744Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 4cm DummyPass: 2Note: SHMS angle -17.34,current -422.3Calibrated On:2026-Mar-30 23:40Calibrated By: yoonFile:C-2026-03-30_2340_4cm_Dummy_Pass-2.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4482743Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Price
DATE:             04/02/2026
SHIFT:               Owl

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4482742Logbook(s): 

• HCLOG
• ELOG

Entry Makers: jhowardBody: 

Raster on at 2x2

Log Number: 4482741Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4482738Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 4cm DummyPass: 2Note: SHMS angle -17.34,current -422.3Calibrated On:2026-Mar-30 23:40Calibrated By: yoonFile:C-2026-03-30_2340_4cm_Dummy_Pass-2.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)

Log Number: 4482729Logbook(s): 

• BTLOG
• ELOG

Entry Makers: samariBody: 

not as bad as day shifts.

Log Number: 4482728Logbook(s): 

• BTLOG
• ELOG

Entry Makers: samariBody: 

I had the idea that the difference between the Arc 3 and Arc 1 dpp would resolve to be sin of the phase error like if arc 3's phase center is slightly offset (below math is for 1 degree) to arc 1s:
cos(phi + 1*pi/180) -cos(phi)= cos(phi)cos(pi/180)-sin(phi)sin(phi/180)-cos(phi)
with small angle approximations you can reduce it to -pi/180*sin(phi). Which moves the lock point to a negative slope around phase error, making a NL gang phase lock possible. Implemented it and tuned the integral gain to correct on a range from 0.01 degrees to .1 degrees at an interval of 30 s.