Aggregator

Log Number: 4504359Logbook(s): 

• ELOG
• LERFLOG

Body: The following entry was placed in the Accelerator Bypassed-Interlocks Log (ABIL) Device: OM226 Function: Oxygen Monitor Location: LERF Optical Control Room Purpose: Bypassed & area posted as ODH2, no hazards were identified during investigation, sensor may be faulty Exp.

Log Number: 4504358Logbook(s): 

• ELOG

Body: HALLC=>BCM=>IBC3H05=>IBC3H05:bcmtctemp_r has been disabled in alarm handler

in alarm

Log Number: 4504357Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

Log Number: 4504356Logbook(s): 

• LERFLOG
• ELOG

Entry Makers: dchriBody: 

Log Number: 4504354Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoon

Log Number: 4504353Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4504350Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4504343Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17014Title:
MBC4R06H mismatch

Summary:
swapping TCDuration:
17 minutes

Time Down:
25-May-2026 17:49

Time Up:
25-May-2026 18:06

Log Number: 4504340Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17015Title:
Pass3 RF separator tripped

Summary:
trying to recover, will need to contact RF on call if unable to fixDuration:
3 minutes

Time Down:
25-May-2026 17:50

Time

Log Number: 4504339Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17015Title:
Pass3 RF separator tripped

Summary:
trying to recover, will need to contact RF on call if unable to fixDuration:
3 minutes

Time Down:
25-May-2026 17:50

Time

Log Number: 4504338Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Looks like pass 3 separator recovered. Will check orbits when we recover from the MBC4R06H mismatch.

Log Number: 4504336Logbook(s): 

• ELOG

Entry Makers: dchriBody: A phone call was placed to Araiza - SSG, the conversation was: Talked with expert, they said they will call back with guidance

Log Number: 4504337Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Log Number: 4504335Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17014Title:
MBC4R06H mismatch

Summary:
swapping TCDuration:
1 minute

Time Down:
25-May-2026 17:49

Time Up:
Category:

Log Number: 4504334Logbook(s): 

• DCLOG
• ELOG

Entry Makers: yoonBody: 

need to swap the TC

Log Number: 4504333Logbook(s): 

• ELOG

Entry Makers: dchriBody: 

After Hall B, Hall C, & Hall D all reached current setpoints...
Hall B's Attenuator was at ~490
A3 interception was at ~0.075

But Hall B's attenuator continues to climb by +205 with no change in Hall B's current at 2C24

INJ interception is just soaking it up like a sponge until it trips

Log Number: 4504330Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

Day shift was having considerable difficulty with beam loss in the 5E region and elevated halo rates in Hall B at passdown.

After a bit of poking around and investigating setpoint changes around the machine using ReCap, I loaded the all-save from the beginning of Owl shift last night.

Corrected pathlength, linac gang phases crested, and allowed the orbit locks to converge to the hall dumplettes (C beam for passes 1 through 3, D beam for the higher passes).

Brought halls up to requested current one-at-a-time starting with C, then B, and finally D.

All three halls are now receiving their req

Log Number: 4504325Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17012Title:
Orbit checks to lower machine loss

Summary:
running tune mode through the machine to straighten out the orbit, having issues with beam lossDuration:
1 hour 6 minutes

Time Down

Log Number: 4504324Logbook(s): 

• LERFLOG
• ELOG

Entry Makers: dchriBody: 

Fig. 5
No indications of cryo leak

Fig. 4
adjacent head bypassed. will likely contact SSG before proceeding with 2-person response

Log Number: 4504323Logbook(s): 

• HBLOG
• ELOG

Entry Makers: yoonBody: 

xB and xC receiving CW