Aggregator

Log Number: 4504619Logbook(s): 

• ELOG
• SLOG

Tags: 

• Autolog

Body: restorelib 3.0.1 Target restore date was 2026-05-26 10:39:12 The output from the myRestore execution was as follows: iocnl26rffcc1 Rf12Fcc_V2 Pause: 60 second(s) Execute: /cs/opshome/burt/REBOOT/Rf12Fcc/DLOAD_ICAL.csh iocnl26rffcc1 (success) c100_rffcc@2026-05-26 10:39 72(72) restored c100_ecal@2026-05-26 10:39 19(19) restored Execute: myRestore -execute -P c100_ecal -t R1Q1_ECAL -m BLDGNUM=1 ZONE=Q CAV=1 (success) c100_ecal@2025-01-18 09:02 The following have no download value R1Q1AAAMP R1Q1AACAB R1Q1AAJMP R1Q1AAX

Log Number: 4504618Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4504613Logbook(s): 

• ELOG

Entry Makers: chumphryBody: 

Log Number: 4504612Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17021Title:
Hall C: Config Change

Summary:
Config ChangeDuration:
2 hours 54 minutes

Time Down:
26-May-2026 08:30

Time Up:
26-May-2026 11:24

Log Number: 4504608Logbook(s): 

• ELOG

Body: Calibration ParametersHall:CTarget: 10cm DummyPass: 3Note: Calibrated On:2026-May-18 21:39Calibrated By: shrinerFile:C-2026-05-18_2139_10cm_Dummy_Pass-3.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)Compton1,866</t

Log Number: 4504611Logbook(s): 

• ELOG

Entry Makers: janakBody: 

Will come back on10cm Dummy target with 40uA.
During the configuration the hall had a problem with spectrometer rotation and requested an escorted access to reset the driver controller.
Resetting the driver controller didn't work, so they're having their expert come in and have requested a full survey from Radcon.

Log Number: 4504606Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L06-1
Username: kerns
Date/Time: 05-26-26_11:17:41
RF Status: Bad
Tuner Status: Good
Comment: Forgot to uncheck cav1 for cav5 entry. Cav1 will need RFCM replaced per previous entry !
Special Instructions:

Maintenance Tag: Component: RFCM

Log Number: 4504605Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L06-5
Username: kerns
Date/Time: 05-26-26_11:15:56
RF Status: Bad
Tuner Status: Good
Comment: Low filament faults several times dropping HV/filaments. Needs Filament Bd. replaced.
Special Instructions:

Maintenance Tag: Component: Filament Board

Log Number: 4504604Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L06-1
Username: kerns
Date/Time: 05-26-26_11:15:56
RF Status: Bad
Tuner Status: Good
Comment: Low filament faults several times dropping HV/filaments. Needs Filament Bd. replaced.
Special Instructions:

Maintenance Tag: Component: Filament Board

Log Number: 4504603Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L06-1
Username: kerns
Date/Time: 05-26-26_11:14:36
RF Status: Bad
Tuner Status: Good
Comment: Needs RFCM replaced, no RMT5 RF convertor temp. Causing ARC/FSD faults dropping HV/filaments.
Special Instructions:

Maintenance Tag: Component: RFCM

Log Number: 4504599Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: UNMasked Hall C Normal Target FSD

Log Number: 4504598Logbook(s): 

• ELOG

Body: 

Other T/S

RFCM work
1L02-6 (3.4 MV/m)
1L04-4 (12.1 MV/m)
1L12-4 (10.1 MV/m)
1L18-4 (4MV/m)
2L16- 3,4 (or SRF vacuum?)

1L22-8 HV TS

2L11-3 HV TS

Log Number: 4504595Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause 17025Title:
Hall D: Target Change

Summary:
Change target to HydrogenDuration:
2 hours 21 minutes

Time Down:
26-May-2026 08:30

Time Up:

Log Number: 4504594Logbook(s): 

• SRFLOG
• ELOG

Entry Makers: michaelmBody: 

VIP1L06B vacuum started to rise significantly ~10am on 5/24/26, rising by about 2 decades.

Multi-pass X positions shifted from -0.7mm to -2.0 mm, then -3.0 mm in that same period. With it going back to -1.1 mm early this morning.

Y positions were ~ 0.8mm, then 1.3 and 1.7 mm in this same period, shift back to 0.8 at the same time this morning.

SEE pass select seen in Fig. 4. Asked crew chief to return pass to auto-select on BPMs.

Fig. 5: last few hours.

Log Number: 4504591Logbook(s): 

• HCLOG
• ELOG
• RADLOG

Entry Makers: chumphryBody: 

Log Number: 4504582Logbook(s): 

• ELOG
• RFLOG

Body: 

The LLRF system stabilizes the field in the cavity, not the forward power. On the contrary, forward power is used to achieve this task; hence, it often looks "unstable". In the discussed case, there is a small (harmless) detuning angle, running in a sort of" deadband" because xxxDETA was not perfectly zeroed, and forward power follows it. It does not harm DMES!

Log Number: 4504581Logbook(s): 

• ELOG

Body: 

Link relevant PTWs and ensure they are on-issue before proceeding.

Log Number: 4504575Logbook(s): 

• ELOG

Body: 

List of items and suspected causes;

No (low) KCCU
1L15-2
1L18-1,3 no KCCU good resistors, opens MDP/CPS breakers
2L04-3
2L07-2
1L20-5 KCCU AT .65a with KMAV kicking in at 2 kv. 3 Mv/m gradient with reduction for arc faults.
1L23-8 KCCU high faults

Filament board
1L09-6?
1L11-5 ( fil or MA board?)
2L04-3 (both fil and 50 Ohm resistor) (10.4MV/m)
2L07-1 (10.4 MV/m)
2L04-6- Worked on but need more TS as unstable fil voltage (13.7 MV/m)
2L10-8 fil faults, KCCU faults..... (10.4 Mv/m)

Circulator load
1L10-3 failing?

2.5w failed
1L04-7
1l12-3?

Log Number: 4504573Logbook(s): 

• ELOG

Body: 

swapped controller, will monitor.

Log Number: 4504570Logbook(s): 

• ELOG
• RADLOG

Entry Makers: janak