Aggregator

Log Number: 4482103Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 16592Title:
Hall C Configuration Change

Summary:
Changing HMS/SHMS anglesDuration:
7 minutes

Time Down:
31-Mar-2026 11:52

Time Up:

Log Number: 4482095Logbook(s): 

• HDLOG
• ELOG

Entry Makers: bjacobBody: 

Hall requested the tagger magnet on at 72 A. Had to update setpoint 1 from 68 to 72.

Log Number: 4482092Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: VFV2H01A Function: Valve Position Signal Location: HB01ZL116 - Vacuum Crate P61 Purpose: Simulate valve open position on disabled valve channel to satisfy FSD permit. Exp.

Log Number: 4482091Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: VBV2H01A Function: Valve Position Signal Location: HB01ZL116 - Vacuum Crate P93 Purpose: Simulate valve open position on disabled valve channel to satisfy FSD permit. Exp.

Log Number: 4482090Logbook(s): 

• ELOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: VBV2H00A Function: Valve Position Signal Location: HB01ZL116 - Vacuum Crate P92 Purpose: Simulate valve open position on disabled valve channel to satisfy FSD permit. Exp.

Log Number: 4482087Logbook(s): 

• ELOG

Entry Makers: moserBody: 

Hall C at current ~1.5GeV energy is using one out of two sets of raster coils -- Figure 2 -- to achieve rastering of the beam on target.

Figure 1: Dump diffuser interlocks before any changes. In the ~top-left box under the trip bits are current limits for Puck, Raster 1, and Raster 2. These are the currents at which the interlocks for each device become enabled. The puck can take up to 10uA. If it is inserted and >10uA is sent, the puck bit faults. Raster 1 and 2 are configured to trip Raster fault bits if they are found to be Off and >46uA is sent.

Log Number: 4482086Logbook(s): 

• SRFLOG
• ELOG
• RFLOG

Entry Makers: samariBody: 

The SL fudge factor changed from 41 to 15 (-26) when 2L03 was bypassed. Keep in mind 2L12 and 2L13 were brought on to compensate, but this large of a change is really uncommon. The change is corresponding to -8 MeV difference or -16 MV/m difference of expected vs pseudo-measured gradient out of 2L03 at Arc2. Not sure if previous conversations about 2L03's gradient calibrations have been fruitful, but this could be affecting our optics quite a bit.

Log Number: 4482085Logbook(s): 

• ELOG

Body: 

LOTO will be applied to Circuit 11 in Panel B2-L1 to isolate EF-5 (see attached panel schedule). No other equipment will be impacted.

Log Number: 4482080Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Will resume at 1 uA.

Log Number: 4482079Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4482076Logbook(s): 

• ELOG
• INCLOG

Body: 

We were able to re-route the cables for:
-Fast Valve VFV2H01A
-Slow Valve VBV2H01A
-Cold Cathode VCG2H01A
-Convectron VPG2H01A

They are now ready to be plugged in to there respected device after survey and alignment and vacuum is pumped down.

Log Number: 4482070Logbook(s): 

• HCLOG
• ELOG

Entry Makers: chumphry

Log Number: 4482067Logbook(s): 

• ELOG

Entry Makers: simonaBody: 

Please call Ryan B. with questions. I will link this entry in the PD shift plan. I would have done that sooner, if this would have been brought to my attention.

Please read the white board directly; I'm making this elog entry in case somebody erases the white board accidentally.

Spelling it here exactly as I read it from the physical White Board in the control room:

1. Balance 2A energy locks w/Hall C dipole string (Simona's comment: there's a circle around what appears to be a 1. for counting the steps, don't know what that means)

Log Number: 4482066Logbook(s): 

• HCLOG
• ELOG

Body: IDDescriptionPeriodCause 16591Title:
2L03 dropped HV

Summary:
Investigating cause. Appears to be cavity 8. RF on call investigating.

Log Number: 4482065Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: bjacob
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8

Log Number: 4482064Logbook(s): 

• ELOG
• BTLOG

Tags: 

• Autolog

Body: dogCalc V0-14 download - First PL after recovering 2L12 & 2L13
First PL after recovering 2L12 & 2L13
hostname: opsl01
CED workspace: OPS
CED login_key: pro

Log Number: 4482062Logbook(s): 

• ELOG

Body: 

HYST AREA Version 7-0 has successfully cycled the following:

Area.Linacs.South

Total Time: 3.150 mins

Log Number: 4482061Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: bjacob
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T09

Log Number: 4482060Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2026-03-31 09:52:36. The application phase took 00:00:15 to complete.

Log Number: 4482059Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the South Linac fudge factor from 1.041 to 1.015.