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Aggregator

Downtime Incident CLOSED: NL05 HV Trip

19 hours 16 minutes ago

Log Number: 4535722Logbook(s):

ELOG

Body: IDDescriptionPeriodCause 17569Title:
NL05 HV Trip

Summary:
HV TripDuration:
29 minutes

Time Down:
01-Aug-2026 12:28

Time Up:
01-Aug-2026 12:57

chumphry

1L05 Dropped HV

Recent Log Entries

19 hours 21 minutes ago

Log Number: 4535720Logbook(s):

ELOG

Entry Makers: janakBody:

RF on call has been paged. We attempted to bring the zone down to filaments and back up. When that didn't work the guidance suggested restoring the IOC which did the trick. Had to do a POFF optimization and lower the GLOS on cavity 8

janak

iocsoftnl05rf restored

Recent Log Entries

19 hours 29 minutes ago

Log Number: 4535718Logbook(s):

ELOG
SLOG

Tags:

Autolog

Body: restorelib 3.0.1 Target restore date was 2026-08-01 12:20:37 The output from the myRestore execution was as follows: iocsoftnl05rf <NOTE> rf3int: Provided macro *IOC* is never used <NOTE> rf3int: Provided macro *REBOOTPATH* is never used <NOTE> rf3hpa: Provided macro *IOC* is never used <NOTE> rf3hpa: Provided macro *REBOOTPATH* is never used <NOTE> rf3stp: Provided macro *IOC* is never used <NOTE> rf3stp: Provided macro *REBOOTPATH* is never used <NOTE> rf3fcc1: Provided macro *IOC* is never used <NOTE> rf3f

bjacob

Downtime Incident CREATED: NL05 HV Trip

Recent Log Entries

19 hours 38 minutes ago

Log Number: 4535712Logbook(s):

ELOG

Body: IDDescriptionPeriodCause 17569Title:
NL05 HV Trip

Summary:
HV TripDuration:
7 minutes

Time Down:
01-Aug-2026 12:28

Time Up:
Category:

chumphry

Machine update

Recent Log Entries

20 hours 10 minutes ago

Log Number: 4535701Logbook(s):

ELOG

Entry Makers: janakBody:

Running smoothly

janak

Autolog save

Recent Log Entries

20 hours 50 minutes ago

Log Number: 4535687Logbook(s):

ELOG

Tags:

Autolog

Body: saver ran from opsl05

Saved: bjacob 08-01-26 11:23:25 {A:i B:1 C:5 E:1060 A=BS B=CW C=CW D=CW 0R08=48.06 No dumps in. Mid Day Shift.

bjacob

Pathlength adjustment

Recent Log Entries

20 hours 50 minutes ago

Log Number: 4535688Logbook(s):

ELOG

Entry Makers: janakBody:

After recovering from 1L13 HV being down, pathlength needed to be corrected. Ran Dogleg calculator

janak

Autolog save

Recent Log Entries

20 hours 50 minutes ago

Log Number: 4535686Logbook(s):

ELOG

Tags:

Autolog

Body: saver ran from opsl03

Saved: chumphry 08-01-26 11:23:12 {A:i B:1 C:5 E:1060 A=BS B=CW C=CW D=CW 0R08=48.87 No dumps in.

chumphry

RF Health Check MYA

Recent Log Entries

20 hours 51 minutes ago

Log Number: 4535685Logbook(s):

ELOG
RFLOG

Tags:

Autolog

Body: 20 rows, time span -8h to 0
Minimum GMES threshold 2.9 MV/m

chumphry

Machine Update

Recent Log Entries

20 hours 53 minutes ago

Log Number: 4535684Logbook(s):

ELOG

Entry Makers: chumphryBody:

Beam restored back to B/C/D

chumphry

"1L13 Recovery and Tuning complete. CW beam back to B/C/D"

Recent Log Entries

20 hours 55 minutes ago

Log Number: 4535682Logbook(s):

ELOG

Entry Makers: bjacobBody:

bjacob

FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor

Recent Log Entries

21 hours 2 minutes ago

Log Number: 4535678Logbook(s):

ELOG

Tags:

Autolog

Body: System UN-Masking for: BeamLossMonitor
User: janak
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
ILM8T

janak

COMMENT ON RF Maintenance for the week of July 27th through August 2nd, 2026

Recent Log Entries

21 hours 10 minutes ago

Log Number: 4535677Logbook(s):

ELOG

Body:

MDP breaker reported tripped. Klystron #7 had arced. Pulled jumper and reset MDP breaker. Zone went to High Voltage without incident. Turned zone over to Ops for RF recovery. Informed Ops cavity #7 needed to be bypassed. Tech: S. Holben

holben

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

Recent Log Entries

21 hours 12 minutes ago

Log Number: 4535676Logbook(s):

ELOG

Tags:

Autolog

Body: System Masking for: BeamLossMonitor
User: janak
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
ILM8T09<

janak

dogCalc V0-14 download

Recent Log Entries

21 hours 14 minutes ago

Log Number: 4535675Logbook(s):

ELOG
BTLOG

Tags:

Autolog

Body: dogCalc V0-14 download

hostname: opsl01
CED workspace: OPS
CED login_key: pro

janak

"1L13 Back in HV. Cav 7 GSET Zero. ReLEMing the NL and Checking Orbits"

Recent Log Entries

21 hours 17 minutes ago

Log Number: 4535674Logbook(s):

HDLOG
HCLOG
HBLOG
ELOG

Entry Makers: bjacobBody:

bjacob

The following cavity histories have been updated: 1L13-7

Recent Log Entries

21 hours 17 minutes ago

Log Number: 4535672Logbook(s):

ELOG
RFLOG

Tags:

Autolog

Body:

The following cavity histories have been updated:
1L13-7
Username: holben
Date/Time: 08-01-26_10:56:11
RF Status: Bad
Tuner Status: Good
Comment: Klystron arced. 50 ohm resistor blown. Pulled jumper.
Special Instructions:

Maintenance Tag: Component: 50 Ohm Resistor

holben

Downtime Incident CLOSED: 1L13 not going into HV after trip

Recent Log Entries

21 hours 19 minutes ago

Log Number: 4535671Logbook(s):

ELOG

Body: IDDescriptionPeriodCause 17568Title:
1L13 not going into HV after trip

Summary:
Seemed to be cav 7 (Kly Cathode Current) which faulted the zone out of HV. Attempt to restore did not prevail. Sending operator out to service building to take a look.

chumphry

HYST AREA 7-0 Cycles Magnets for LEM

Recent Log Entries

21 hours 19 minutes ago

Log Number: 4535670Logbook(s):

ELOG

Body:

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

Area.Linacs.North

Total Time: 3.033 mins

janak

1L13-1 OLT Odd Detune Angle Behavior

Recent Log Entries

21 hours 22 minutes ago

Log Number: 4535669Logbook(s):

ELOG

Entry Makers: bjacobBody:

When bringing back 1L13, cavity 1 was struggling. A quick OLT did the trick.

I did see a weird drop in gradient /jump in detune angle. Specifically, it went from 7 MV/m to 2 MV/m and detune angle jumped from -5.3 to 52.2 with a step change of only 250. Just some odd behavior. It didn't prevent me from bringing the cavity back on but I figured somebody might want to look at this.

bjacob

Shift Information

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CEBAF Program
MCC Crew Chief
MCC Operators
Program Deputy
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Additional Info

Aggregator

Downtime Incident CLOSED: NL05 HV Trip

1L05 Dropped HV

iocsoftnl05rf restored

Downtime Incident CREATED: NL05 HV Trip

Machine update

Autolog save

Pathlength adjustment

Autolog save

RF Health Check MYA

Machine Update

"1L13 Recovery and Tuning complete. CW beam back to B/C/D"

FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor

COMMENT ON RF Maintenance for the week of July 27th through August 2nd, 2026

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

dogCalc V0-14 download

"1L13 Back in HV. Cav 7 GSET Zero. ReLEMing the NL and Checking Orbits"

The following cavity histories have been updated: 1L13-7

Downtime Incident CLOSED: 1L13 not going into HV after trip

HYST AREA 7-0 Cycles Magnets for LEM

1L13-1 OLT Odd Detune Angle Behavior

Shift Information

Access Status

Recent PSS History

Contact Info

Additional Info

Error message

Aggregator

Shift Information

Access Status

Recent PSS History