Aggregator

Log Number: 4404989Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW beam to B, C, and D. 

Log Number: 4404987Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 8 0 0

Log Number: 4404984Logbook(s): 

• ELOG
• RFLOG

Entry Makers: victorcBody: 

HV recovered fine. Cavity 5 needed special attention. Lowered GLOS then walked it back up to near GSET. Restored fine.

Log Number: 4404968Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 15000Title:
1L23-4 keeps tripping out of SELAP

Summary:
RF on-call looking into it.

Log Number: 4404967Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 15000Title:
1L23-4 keeps tripping out of SELAP

Summary:
RF on-call looking into it.

Log Number: 4404966Logbook(s): 

• ELOG
• RFLOG

Entry Makers: victorcBody: 

RF on-call looking into it.

Log Number: 4404964Logbook(s): 

• ELOG

Entry Makers: victorcBody: 

Followed the guidance to check the hardware and try a reset in expert mode. Worked.

Log Number: 4404960Logbook(s): 

• ELOG

Tags: 

• Software Change

Entry Makers: werlaukelvinadamcBody: 

The accelerator division's public web server ace.jlab.org is now routed through CloudFlare when accessed offsite. Onsite access is unchanged. This change is effective immediately (actually since today, June 24 at about 4:00 PM) and in response to increased bot activity observed. CloudFlare is an Internet support service company that manages nearly 20% of all Internet traffic and provides expertise in minimizing bot abuse, which appears to be on the rise.

Log Number: 4404962Logbook(s): 

• HALOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4404955Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Log Number: 4404954Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4404953Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4404952Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4404922Logbook(s): 

• HALOG
• ELOG

Entry Makers: victorcBody: 

Log Number: 4404921Logbook(s): 

• ELOG

Body: Calibration ParametersHall:ATarget: Loop 1 30cmPass: 5Note: Liquid HCalibrated On:2025-May-09 20:49Calibrated By: anthonyFile:A-2025-05-09_2049_Loop_1_30cm_Pass-5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton

Log Number: 4404918Logbook(s): 

• HDLOG
• ELOG

Entry Makers: victorc

Log Number: 4404912Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4404859Logbook(s): 

• ELOG

Tags: 

• Autolog
• MCC8am

Body:  */ ATLis Comments Posted 18:00 Monday June 23 through 18:00 Tuesday June 24 AES DC power Systems Investigate 20A Trims 2025

2025-06-24 09:06 - James Thornton

Would like to chec

Log Number: 4404857Logbook(s): 

• HALOG
• HBLOG
• POLOG
• ELOG

Body: 

After the beam was down, the CW beam came back during the end of run 18777 at about 15:14 hrs.

Charge asymmetry started at around ~ -200 ppm and then slowly drifted towards 0. We will observe how it behaves.

Log Number: 4404855Logbook(s): 

• ELOG

Body: ACC=>VACUUM=>EAST_ARC=>ARC5=>VIP5S01 has been disabled in alarm handler

OPS-PR 4404850