Aggregator

Log Number: 4515481Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: Masked Hall C Normal Target FSD

Log Number: 4515480Logbook(s): 

• HCLOG
• ELOG

Entry Makers: victorc

Log Number: 4515475Logbook(s): 

• SRFLOG
• ELOG
• RFLOG

Entry Makers: michaelmBody: 

Slow trip point for VIP1L25B presently at 1e-7. Will discuss raising trip point to 5e-7 with AES-IC while troubleshooting of the B-pump activity continues on this zone. Hopefully this will eliminate some of the nuissance trip for operations.

Log Number: 4515474Logbook(s): 

• ELOG
• RFLOG

Tags: 

• Autolog

Body: 

Beam Conditions:
Total Linac Current (R2XXITOT) = 148.32
Hall A Current (IBC1H04CRCUR2) = 0
Hall B Current (IPM2C24A.IENG) = 86.7199
Hall C Current (IBC3H00CRCUR4) = 58.41
Hall D Current (IBCAD00CRCUR6) = 0
BSY Current (IBC4C00CRCUR5) = 0
INJ Energy (MMSINJEGAIN) = 119.615
NL Energy (MMSLIN1EGAIN) = 1060
SL Energy (MMSLIN2EGAIN) = 1060

Gradient Problems:
0L02-7 Klystron Cathode Current (KCCU)=0.00384521 (<=0.7A)
0L03-1 Local Oscillator Power (LOPW)=49.1 (<=70mW)
1L02-6 Gradient Loop Detector Error RMS (GLDER)=163 (<0 or >=80ppm)
1L04-8 GLDER=207 (>=200) with RF OFF - Check Detuning
1L05-5 Kl

Log Number: 4515472Logbook(s): 

• ELOG

Body: 

Once the PTW is on-issue this task is approved.

Log Number: 4515466Logbook(s): 

• ELOG
• LERFLOG

Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 06-23-26
Time : 07:26:51
Day : Tuesday
Shift : Day

Crew Chief : Blackshaw
Program Deputy: Nissen
Team : E
Arm : RadCon
Designated SSO: Janak
LERF Operator:
Operators : Humphry, Janak

This stamp certifies that the above Crew Chief has read/reviewed/received the following:

Log Number: 4515464Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: CW beam to Halls B and C.

Log Number: 4515462Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN OFF (SAM) Planned 8 0 0

Log Number: 4515455Logbook(s): 

• MOLLER
• ELOG

Tags: 

• Moller
• PD

Entry Makers: jonesgaskelldwineskashydougberdnikciprianBody: 

Hall A techs worked on installing cable tray support ramps and plexiglass protection covers, for water cooled leads, on Down Stream Enclosure section of beam line.

Log Number: 4515451Logbook(s): 

• ELOG

Body: 

This task is still being performed, FMO-E will complete today.

Log Number: 4515441Logbook(s): 

• ELOG
• RFLOG

Entry Makers: victorcBody: 

Very shortly after performing a phase offset optimization on cavity 6, it looks like cavity 4 tripped on an arc fault and took some other cavities out with it. Everything recovered fine.

Log Number: 4515437Logbook(s): 

• ELOG
• RFLOG

Entry Makers: victorcBody: 

A few cavities tripped SELAP due to a quench fault somewhere. Cavity 6 needed some help recovering.

Log Number: 4515430Logbook(s): 

• DCLOG
• ELOG

Entry Makers: victorcBody: 

The current on this magnet looks to be getting noisier, sometimes crossing the upper current tolerance threshold and causing an alarm in the MCC. Voltage is steady. Could use a reseat or swap at next opportunity.

Log Number: 4515425Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: jhoward 06-23-26 05:17:43 {A:i B:1 C:3 E:1060 A=BS B=CW C=CW D=BS 0R08=69.96 No dumps in.

Log Number: 4515424Logbook(s): 

• ELOG

Entry Makers: kpriceBody: 

2C line at 5 uA tune up to the dumplet (fig 1) vs 320 nA CW (fig 2) into the hall. They're similar enough that I'd say the 2C BPMs are reliable at this current.

Log Number: 4515423Logbook(s): 

• ELOG

Entry Makers: victorc

Log Number: 4515422Logbook(s): 

• DCLOG
• ELOG

Entry Makers: victorcBody: 

Didn't cycle. Not using the magnet at the moment and didn't want to potentially affect any beam operations in nearby passes.

Log Number: 4515421Logbook(s): 

• ELOG

Entry Makers: kernsBody: 

RFCM loss of comm. prevented zone from going into filaments. Zone was originally GSET 0 for no KCCU after resistor was replaced 06/02/26 and most likely blew again 06/06/26. Tried RD1 and bypassing but that still did not clear the watchdog and HV enable faults. Had to restore comm's by installing a new RFCM just to regain comm's and clear these errors so that we could bypass the cavity and get the rest of the zone restored. RFCM will need RF downloads when we take the zone down for repairs and troubleshooting the "No KCCU problem.

Log Number: 4515420Logbook(s): 

• ELOG

Entry Makers: victorcBody: 

Log Number: 4515417Logbook(s): 

• DCLOG
• ELOG

Entry Makers: victorcBody: