Aggregator

Log Number: 4474931Logbook(s): 

• ELOG

Body: 

Set quads back to 0. NLC100 total neutron dose rate increased from 6.8 to 15.1 R/hr, but is still down from the previous 19-20 R/hr.

1L23 gradients shown.

Log Number: 4474930Logbook(s): 

• ELOG

Entry Makers: deirBody: 

Fig 1: Cavity 1 - No significant change from 8 MV/m -> 9.5 MV/m

Fig 2: Cavity 2 - Roughly 1R/hr increase in C100 neutron rates going from 10 MV/m to 13 MV/m. An additional 3 R/hr going from 13.0 to 14.8 MV/m. This large increase in neutron dose rate seems to start at 14.0 MV/m.

Log Number: 4474929Logbook(s): 

• ELOG

Entry Makers: samariBody: 

The cavity started SOSing so I walked gradient down and was going to see if it wasn't tuned well. With a GLOD of -1.1 I could only get 0.06 kW of CRFP, and tuning showed we were on resonance. The attenuator is already at 0 dB. GASK has been rising for the past couple days.

Log Number: 4474928Logbook(s): 

• ELOG

Entry Makers: msmithBody: 

Cavity started SOSing. OLT'd and zeroed the detune angle

Log Number: 4474927Logbook(s): 

• ELOG

Entry Makers: samariBody: 

On the 5th around noon the readback went to zero, but no impact on LO or IF in the zone or others downstream of it. No mention of any work on the zone in the logs, and zone was off at the time.

Log Number: 4474926Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

The following cavity histories have been updated:
1L23-8
Username: deir
Date/Time: 03-07-26_00:44:07
RF Status: Bad
Tuner Status: Good
Comment: C100 Bypassed - KCCU High faults dropping zone https://logbooks.jlab.org/entry/4474925
Special Instructions:

Maintenance Tag: Component: Operator Entry - See SME

Log Number: 4474925Logbook(s): 

• ELOG

Entry Makers: deirBody: Very noisy KCCU and KFVM signals. Filament board was replaced recently. Bypassing for now to keep the zone on.

Log Number: 4474924Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Smith
DATE:             03/06/2026
SHIFT:               Owl

The operator has read the following:

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

Log Number: 4474923Logbook(s): 

• ELOG
• LERFLOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Samari
DATE:             03/07/2026
SHIFT:               Owl

The operator has read the following:

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