Aggregator

Log Number: 4492586Logbook(s): 

• ELOG

Body: The following entry was removed from the Accelerator Bypassed-Interlocks Log (ABIL) Tag # 9690 Device: RF 2L02 Function: Certification Lock Location: CPS 2L02 Purpose: Needs certification Removed By: sbruhwel

Log Number: 4492584Logbook(s): 

• ELOG

Body: 

Latest log entry describing the leak and repair details: https://logbooks.jlab.org/entry/4492580

Log Number: 4492580Logbook(s): 

• FMLOG
• HBLOG
• HCLOG
• HDLOG
• ELOG

Tags: 

• Readme

Entry Makers: moserBody: 

This morning a small stream of water was found spraying from cyclone separator outside behind B67 = NAB. This cyclone separator is for the West Arc tunnel LCW. Nominally, through the T, 3600gpm flows. As such, water was valved off in order to not worsen the leak.

There is still LCW flow, albeit reduced (Figure 4), through systems cooled by the West Arc LCW -- those in orange on the LCW commander (Figure 3), cooled by the "North Access Small Pump". But there is no active heat exchange, and as such we are leaving all systems that use West Arc LCW OFF.

Log Number: 4492579Logbook(s): 

• ELOG

Body: 

Approved for immediate execution.

Log Number: 4492565Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam has been set up to HB (5th pass) and HC dumplettes.

Log Number: 4492561Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

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

Log Number: 4492554Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

Due to the west arc LCW issues, we are locking in FC2 and moving to reduced staffing in the control room.

Staffing will be reduced to 1 operator in the control room acting as SSO and one Crew Chief on Call. Check the Crew Chief announcements at the top of the ELog for Crew Chief on Call contact information.

Log Number: 4492553Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Gun ramped down to facilitate PSS certification of 2L02

Log Number: 4492550Logbook(s): 

• ELOG
• POLOG

Tags: 

• Autolog

Body: 

Log Number: 4492546Logbook(s): 

• ELOG
• POLOG

Tags: 

• Autolog

Body: 

Log Number: 4492542Logbook(s): 

• ELOG

Body: 

Per D. Moser the earliest we expect to turn accelerator systems back on after the LCW repair is thursday sometime. Then we would have to get the machine back to 5th pass for Halls B and D (2nd pass for Hall C).

Log Number: 4492540Logbook(s): 

• ELOG

Body: 

Mag Shop:

Work completed and ATLis is being closed.

Log Number: 4492535Logbook(s): 

• ELOG

Body: 

North and South linacs, 0L04, and LERF (1F02). Due to no LCW supplemental fans were put on all the Agilent turbo pumps to prevent over heating. When LCW is back on vacuum group will remove the fans. Modules affected are 1L03, 1L04, 1L11, 1L13, 1L19, 1L20, 1L22, 1L23. 2L07, 2L08, 2L09, 2L12, 2L13, 2L17, 2L23. 0L04 and 1F02.

Log Number: 4492534Logbook(s): 

• ELOG

Entry Makers: bjacobBody: 

I accidentally made the initial downtime entry in the reviewer mode on DTM which does not post to the ELog.

Please see the attached DTM entry for full details.

Log Number: 4492533Logbook(s): 

• ELOG

Body: HALLC=>BEAMDUMP has been disabled in alarm handler

N2 storage tank pressure

Log Number: 4492532Logbook(s): 

• ELOG

Body: 

A split gasket was found at the back of the dump alcove that seals the beam tube to the isolation wall. Provisions have been made and executed under a separate atlis. Please see attached pictures and presentation for more details.

Log Number: 4492528Logbook(s): 

• ELOG

Body: HALLC=>BEAMDUMP has been enabled in alarm handler

Should have been storage tank pressure only

Log Number: 4492527Logbook(s): 

• ELOG

Body: HALLC=>BEAMDUMP=>IPND101 has been disabled in alarm handler

facilities troubleshooting

Log Number: 4492523Logbook(s): 

• ELOG

Body: HALLC=>BEAMDUMP has been disabled in alarm handler

facilities troubleshooting

Log Number: 4492522Logbook(s): 

• ELOG

Tags: 

• Readme

Entry Makers: chumphryBody: