Aggregator

Log Number: 4540606Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L15-7
Username: anthony
Date/Time: 08-10-26_17:33:05
RF Status: Good
Tuner Status: Good
Comment: DRVH=10.000 reflective power high
Previous OPS DRVH: 12.5
Special Instructions:

Log Number: 4540605Logbook(s): 

• HCLOG
• ELOG

Tags: 

• Miscellaneous

Body: 

From the investigation of BE3H05 water leak, we found that there is a pinhole leak in the diode bridge cooling plate. Other components were found needing replacement, specifically the capacitor bank caps.

Log Number: 4540604Logbook(s): 

• ELOG
• CLOG

Tags: 

• Autolog

Body: LEM 9.19.5 was successfully run for the North Linac on 2026-08-10 17:24:59. The application phase took 00:02:33 to complete.

Log Number: 4540603Logbook(s): 

• ELOG

Body: Results where Job # is 1058 {6} CAVITY PHASE ERROR (DEGREES) OUTCOME PHASE (DEGREES) START DATE DURATION (SECONDS) CORRECTION DATE CORRECTION ERROR REASON 1L20-2 -1.17 CORRECTED 108.75 10-Aug-2026 17:17 59<

Log Number: 4540602Logbook(s): 

• ELOG

Entry Makers: shrinerBody: 

When we first sent beam it only made it to 1L06, but after a 69 degree change in GP we were able to reach the 1R dump. Hand-phased and now running phaser on several cavities.

Log Number: 4540599Logbook(s): 

• POLOG
• ELOG

Entry Makers: suleimanBody: 

Ops requested finer control of the Hall B beam current, which is currently running at 3.5 nA.

With the attenuator set to 1000 and the Hall B amplifier at 3 A, we measured 22 mW of laser power (Figures 1 and 2). Reducing the amplifier current to 2 A produced 9 mW, while 1.5 A produced 4.4 mW.

I left the Hall B amplifier at 1.5 A (Figure 3). Previously, the attenuator provided approximately 0.5 nA per step. With this change, the step size should now be approximately 0.1 nA per step, providing significantly finer control of the Hall B beam current.

The only issue is that this change will cause the automated TMG health check for Laser B to fail. Max will need to adjust the settings used for this measurement.

Log Number: 4540598Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: CryoModule
User: chumphry
Areas: SouthLinac

CryoModule Devices:
2L14
2L03
2L02
2L04
2L05
2L07
2L06
2L08
2L11
2L09
2L10
2L12
2L15
2L13
2L16
2L19
2L17
2L18
2L20
2L21
2L22
2L23
2L24
2L25
2L26

Log Number: 4540597Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: All
User: chumphry
Areas: All

Reset FSD Nodes to the Gold masks

The following PVs failed to write:
ISD2L061L
ISD2L072L
ISD2L081L
ISD2L091L
ISD2L071L

Log Number: 4540596Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: CryoModule
User: chumphry
Areas: NorthLinac SouthLinac

CryoModule Devices:
1L14
1L03
1L02
1L04
1L05
1L07
1L06
1L08
1L09
1L10
1L11
1L12
1L15
1L13
1L16
1L19
1L17
1L18
1L20
1L21
1L22
1L23
1L24
1L25
1L26
2L14
2L03
2L02
2L04
2L05
2L07
2L06
2L08
2L11
2L09
2L10
2L12
2L15
2L13
2L16
2L19
2L17
2L18
2L20
2L21
2L22
2L23
2L24
2L25
2L26

Log Number: 4540595Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: BeamLossMonitor
User: lrichard
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
IL

Log Number: 4540594Logbook(s): 

• ELOG

Body: 

Replaced RFCM's in 2L13-2 and 1L06-4 and recovered RF and optimized, Recovered 1L15 and 1L20 and about a half dozen others that I didn't see faults or problems with. Lost 1L15-2 to the klystron resistor, DC Overload again for the eighth time and this will need all HV checked out. 1L15-7 lost about half it's gradient when drive lost. It had been SOSing per OPS during beam so the 2.5 w amp and driveline needs checked on it. Handed machine back to OPS at 1630.

Log Number: 4540585Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The OPS DRVHs for the following cavities have been updated:
1L20-2
Username: kerns
Date/Time: 08-10-26_16:31:55
RF Status: Good
Tuner Status: Good
Comment: DRVH=4.400 Optimized cavity at 4.4 Mv/m without seeing anything wrong. Could be with beam loading though.
Previous OPS DRVH: 3
Special Instructions:

Log Number: 4540582Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

GASK is at 2.5v with 0 RATN at 5Mv/m. Klystron output looks good but drive was running at ~12.4 Mv/m at 550 am this morning before shutdown. Started SOS'ing as someone revovered it to HV/RF after cav 2 repairs. Also looks like cavity 2 blew yet another klystron 50 ohm load and DC overloaded when brought back to HV. No KCCU but I noticed it had momentary KCCU when I saw it go into ramp up.

Log Number: 4540581Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L15-2
Username: kerns
Date/Time: 08-10-26_16:29:16
RF Status: Bad
Tuner Status: Good
Comment: Disregard last drive line check. Cavity blew 50 ohm kly resistor like Alex stated.
Special Instructions:

Maintenance Tag: Component: 50 Ohm Resistor

Log Number: 4540577Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System Masking for: BeamLossMonitor
User: lrichard
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

Log Number: 4540576Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L15-7
Username: kerns
Date/Time: 08-10-26_16:27:26
RF Status: Good
Tuner Status: Good
Comment: Drive lost and running at 5M/vm with 2.5v GASK and 0 RATN. Needs drive line/cable checks
Special Instructions:

Maintenance Tag: Component: 2.5W Amp

Log Number: 4540575Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L15-2
Username: kerns
Date/Time: 08-10-26_16:27:26
RF Status: Good
Tuner Status: Good
Comment: Drive lost and running at 5M/vm with 2.5v GASK and 0 RATN. Needs drive line/cable checks
Special Instructions:

Maintenance Tag: Component: 2.5W Amp

Log Number: 4540573Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: System UN-Masking for: CryoModule
User: lrichard
Areas: NorthLinac SouthLinac

CryoModule Devices:
1L14
1L03
1L02
1L04
1L05
1L07
1L06
1L08
1L09
1L10
1L11
1L12
1L15
1L13
1L16
1L19
1L17
1L18
1L20
1L21
1L22
1L23
1L24
1L25
1L26
2L14
2L03
2L02
2L04
2L05
2L07
2L06
2L08
2L11
2L09
2L10
2L12
2L15
2L13
2L16
2L19
2L17
2L18
2L20
2L21
2L22
2L23
2L24
2L25
2L26

Log Number: 4540568Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavities have been UnGSET 0:
1L13-7
Username: anthony
Date/Time: 08-10-26_16:21:32
RF Status: Good
Tuner Status: Good
Comment: UnGSET 0 - stepped on -100k - 50 ohm resister replaced Elog 4540559
Special Instructions:

Maintenance Tag: Component: 50 Ohm Resistor

Log Number: 4540560Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Humphry
DATE:             08/10/2026
SHIFT:               Swing

The operator has read the following:

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