Aggregator

Log Number: 4405562Logbook(s): 

• ELOG

Body: 

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

Area.Linacs.South

Total Time: 3.150 mins

Log Number: 4405560Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the North Linac on 2025-06-25 16:54:32. The application phase took 00:02:01 to complete.

Log Number: 4405559Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19 was successfully run for the South Linac on 2025-06-25 16:53:56. The application phase took 00:00:09 to complete.

Log Number: 4405557Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: eforman
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
ILM8T0

Log Number: 4405556Logbook(s): 

• ELOG
• RFLOG

Body: 

1L13-7 50 ohm resistor replaced and zone came back up into HV and RF without issues.

Techs: Evonda V. and Alex S.

Log Number: 4405555Logbook(s): 

• ELOG
• RFLOG

Body: 

1L09-5 Klystron passed the hi-pott test. 50 ohm resistor was good. Verified all connections going to the klystron connection board were in-place and tightened. Zone came back up into HV and RF w/o issue.
Techs: Evonda V. and Alex S.

Log Number: 4405554Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Destination Masking to: BSY
User: eforman

Log Number: 4405553Logbook(s): 

• ELOG

Body: 

Also recovered 2L13-5 to 4 Mv/m and 1L06-4 to 12.8Mv/m after operators GSET 0 them this week. They aren't on the Atlis and just needed to be recovered in OLT. Kerns

Log Number: 4405548Logbook(s): 

• DEGRADERLOG
• ELOG

Entry Makers: brukeramysyvictorlBody: 

Log Number: 4405547Logbook(s): 

• DEGRADERLOG
• ELOG

Entry Makers: brukeramysyvictorlBody: 

Executed procedure for BCM FSD setup: Figs. 1 and 2.
Figure 3: Hit the Keep on Loop button for MPT0L02 to test if it cycles correctly now, which seems to be the case.
But, it turns out that for this magnet, the hysteresis loop is defined in such a way that we need to walk through it in ascending order.

Figure 4: measurement works fine once automatic lens cycling is turned off. The logic for when it cycles is suspicious.

Log Number: 4405541Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl02
Data from: /usr/opdata/burt/allsnap/06-25-25_06:52:31
Restored file: /tmp/06-25-25_16:23:47.snap

Log Number: 4405540Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl02

Saved: bruker 06-25-25 16:23:34 {A:5 B:5 C:5 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 0R08 dump in. Autosave prior to restore.

Log Number: 4405539Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L04-8
Username: deir
Date/Time: 06-25-25_16:19:43
RF Status: Good
Tuner Status: Good
Comment: Test
Special Instructions: Leave tuner in manual

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4405536Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Janak
DATE:             06/25/2025
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4405535Logbook(s): 

• HALOG
• ELOG
• SRFLOG

Body: 

VIPAE01 flagged as stopped pumping, but it is only railed. It is still pumping
- Part of the ion pumps replaced 3 months ago in the AE Line
- Both VIPAE01A and VIPAE02 have railed for months (these 2 pumps were also replaced)
- Suggests another issue, looking at beam tube replacement as next step during next SAM
- Scoped out Hall A Muller vacuum work

Log Number: 4405534Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Chaudhary
DATE:             06/25/2025
SHIFT:               Swing

The operator has read the following:

Log Number: 4405531Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             06/25/2025
SHIFT:               Swing

The operator has read the following:

• ELOG
• PD Shift Plan
• Radiation Surveys for PSS Segments in Controlled Access
• PSS Log

Log Number: 4405528Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

End of AUG 2023 to APR 2024 this Klystron was running at 1.33a without good klystron values. Since Aug 2024 it hasn't been hipotted but there were a lot of issues with the breakers, especially MDP breaker that the whole zone was not in HV from Apr 2024 to Feb 2025 that the zone wasn't in HV so klystron couldn't be retested in HV if it even got hi-potted in that time period. From Feb 2025 to present, every time we through a new 50 ohm resistor in for klystron 6, 10 resistors from Oct 23 when the tube was last replaced by T Davis and Holben and they found a damaged klystron bullet.

Log Number: 4405523Logbook(s): 

• ELOG

Body: 

PSS Video System upgrade: measurements taken in Injector Service Building to estimate length for power cables.

Log Number: 4405521Logbook(s): 

• ELOG
• RFLOG

Body: 

All RF work is completed and recovered by 3.50pm

Summary

1L02-4 cavity recovery +3.8MeV
1L02-7 RFCM change +4MeV
1L09-5 HV work for cavity recovery +12.6MeV
1L12-6 HV work to recovery , Could not turn on to RF
1L13-7 50 ohm resister replaced +5.4 MeV
1L18-HV troubleshoot and zone recovery
1L25-6 FCC change out +9.1MeV

2L12-4 HV work for cavity recovery,Further TS needed
2L13-5 recovery +2MeV

Separator troubleshooting https://logbooks.jlab.org/entry/4405460

NL gain +34.9 MeV
SL gain +2MeV