Aggregator

Log Number: 4505168Logbook(s): 

• ELOG
• BTLOG

Body: Fopt results from /usr/ntfs/public/optics/diforb/26may271445
Comment: Beam recovery
HOSTNAME: opsl01
CED WORKSPACE: OPS CED LOGIN KEY: pro
MYA DEPLOYMENT: ops
CONFIG PATH: /cs/prohome/apps/q/QTSnyder_QT5/1-2/fileio/config/cs.conf
DIFORB PATH: /usr/ntfs/public/optics/diforb

Log Number: 4505167Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Fopt 7.9 completed successfully. The runtime settings include a sample count of 15, a minimum current of 4, and an operating regime of Standard with Excitation in 1S Region. The corrector and RF kicks applied were 0.488208 and 0.488208 volts respectively. The max. amplitude setting was 1 millimeters. The files for this run were saved in the directory /cs/opshome/hlapps/optics/diforb/26may271445. The X and Y stability of the machine during the run was 0.0372891 and 0.0676003 (mm) respectively.

Log Number: 4505164Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Fig. 1) B beam to 2C dumplette.
Fig. 2) D beam to AR dumplette.

We have been running biased towards extraction. ArcA target lock set to 4.25mm with extraction at 12.3
Leaving orbit here and not touching separator. Crew chief confirmed.

Log Number: 4505163Logbook(s): 

• ELOG

Body: 

OM22 replaced. will return to service after we can certify the new transmitter, next week when tunnel access is available.

Log Number: 4505161Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Fig. 1) C beam as found
Fig. 2) B beam as found
Fig. 3) D beam as found

A slight phase adjustment is needed to bring B and D recirc beams on top of each other.

Fig. 4) 1.4 degree phase change on 3rd pass separator
Fig. 5) C beam after
Fig. 6) B beam after
Fig. 7) D beam after
Fig. 8) RF Separator captain screen after change.

Log Number: 4505159Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Lost 1L10-3 so brought up 1L09-8 to make up for lost energy. Did LEM and Fudge of NL along with a phase of 1L09-8. Fudge brought down to 0.995 from 1.004.
Sent beam to 2R to check SL energy, didn't need any adjustments
Sent to HC dumplette for separation check. C Extraction looks good, B and D were not quite colinear so had to adjust phase.
Did pathlength up to 3rd pass.

Log Number: 4505158Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17037Title:
Hall B: Controlled Access: Chiller

Summary:
Fill ChillerDuration:
5 hours 50 minutes

Time Down:
27-May-2026 08:30

Time Up:
27-May-2026 14:20

Log Number: 4505157Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17042Title:
Hall D: Controlled Access

Summary:
Requested Controlled AccessDuration:
3 minutes

Time Down:
27-May-2026 14:20

Time Up:

Log Number: 4505156Logbook(s): 

• ELOG
• RFLOG

Entry Makers: alexsBody: 

Zone dropped HV twice on DC overcurrent, tripping the CPS breaker each time. Cavity 3's klystron connection board appears to have a damaged capacitor. The CPS load resistor has been pulled pending further checks/repairs. The CPS 120V step-down transformer wiring needs to be double-checked as well to confirm it matches the C75 upgrade configuration instead of the original C25. It's been in its current configuration for years without issue, so held off on a time-consuming investigation and left it as-is.

Log Number: 4505155Logbook(s): 

• ELOG
• BTLOG

Tags: 

• Autolog

Body: dogCalc V0-14 download

hostname: opsl01
CED workspace: OPS
CED login_key: pro

Log Number: 4505154Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Starting after Arc 2.
As found, no changes to the orbit.

Log Number: 4505153Logbook(s): 

• ELOG

Body: 

Let's target Tuesday 6/2 for BCM fiber tests wherever needed. CEBAF will be in Restricted Access.

Log Number: 4505151Logbook(s): 

• ELOG

Body: 

Good plan for OM22. Good to go.

Log Number: 4505152Logbook(s): 

• ELOG

Entry Makers: mockBody: 

Onwards!

Log Number: 4505150Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17041Title:
Recovering Orbit After 1L06 Vacuum Issues and 1L10 HV Drop

Summary:
Will need to make sure orbits look good after long downtime and linac energy shuffle.

Log Number: 4505149Logbook(s): 

• ELOG
• RFLOG

Body: 

If the Pass 5 Horizontal Separators trip off due to certain faults, like flow or vacuum, these faults latch. This is usually indicated by the Amp Power lights on the Separator Captain page being red while the RF Transmit, AC On, and DC On lights are all green. The easiest way to clear these fault is to use the All Off function on the Separator Captain page to turn off all the Pass 5 Horizontal Separator amps then use the All On function to turn them back on. Once the amps turn back on and the Amp Power light is green, the operator may attempt to turn on the Separator cavity.

Log Number: 4505148Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.North

Total Time: 1.200 mins

Log Number: 4505147Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2026-05-27 14:06:10. The application phase took 00:00:07 to complete.

Log Number: 4505146Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17038Title:
VBV1L06B trip

Summary:
VIP1L06 ion pump has faulted again, closing VBV1L06A and VBV1L06B. When trying to open VBV1L06B trips vacuum up to 1L08.

Log Number: 4505144Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: 

FudgeIt 5.0 changed the North Linac fudge factor from 0.996 to 0.995.