Aggregator
Injector Restoration: picking up where I left off.
Downloaded my AllSave from 2/13 with all Inj magnets, warm RF, and BPM rels. Removed Master Slit and Central Plug from Chopper.
Fig.1: Set H.&V. Wien to -25
Fig.2: Chopper/Buncher/PreBuncher phases
Fig.3: Restored corrector BDLs
Fig.4: As found orbit to FC1. Seems things have shifted a bit. Especially around the H. Wien. Not sure what that is about.
Re-flattening orbits for now.
Fig.5: Flattened orbit to FCup1
Fig.6-11: Beam to 1D.
Taking an AllSave here then continuing on.
HYST AREA 7-0 Cycles Magnets
HYST AREA Version 7-0 has successfully cycled the following:
Area.Injector.PGun
The following magnets were REMOVED from the CYCLING LIST by the user:
MFA0I03
MFA0I05
MFD0I04
MFX0I01
MFX0I05
MFX0I06
MFX0I07
MFX1I03
MFX2I01
MQD5D00
MQD5D01
MFG1I04A
MFG1I04B
Total Time: 1.283 mins
Autolog restore
Autolog save
FSD Masking Tool: Successful System Masking for: BeamLossMonitor
Autolog save
HYST AREA 7-0 Cycles Magnets
Autolog restore
Autolog save
Autolog save
COMMENT ON RF HCO & Gradient Ramp 2026
Zones 2L08, 2L09, 2L10, 2L11, 2L12, 2L14, 2L17, 2L18, 2L19, 2L20, 2L21 reduced to target GSets identified in spreadsheet. LEM Req Heat values updated accordingly.
Updated 1L21-5 and 2L13-5 to checked in SRM. These were repaired and recovered by RF on 2/25/26.
Stepped off many Bypassed/GSET0 cavities +100K:
1L13-5, 2L09-6, 2L10-1, 2L10-7, 2L10-8, 2L14-6, 2L16-3, 2L19-3, 2L19-6.
Operator SIGN IN
2L03 Commissioning Swing Shift
Cryomodule commissioning: completed 1-hour runs on cavity 5 and 6, some work on cavity 7 and 3
Cavity 5:
Q_FPC = 1.67e7, Q_FP = 2.4e12
Emax 21 MV/m, 750 mR/hr, FE Onset 18 MV/m
Cavity 6:
Q_FPC = 1.48e7, Q_FP = 1.5e12
Emax 21 MV/m, 1000 mR/hr, FE Onset 16 MV/m
During 1-hour run, noticed Forward/Reflected power would droop (3.2 -> 2.9 kW) for a few minutes then recover. Caused a 21 -> 20 MV/m droop in cavity gradient.
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-25-26
Time : 23:13:18
Day : Wednesday
Shift : Owl
Crew Chief : Deir
Program Deputy: Schoene
Team : A
Arm : RADCON
Designated SSO: Smith
LERF Operator:
Operators : Smith
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
No Faraday Cup Readbacks
The current readback for the faraday cups does not respond to tune mode beam. We tried rebooting iocinj4 and iocsoftinj1 to no avail. I recall a previous fix that involved switching from autorange to a specific range and back, but this didn't help either. The linked log entry mentions a GPIB controller communicating slowly, diagnosed by way of blinkenlights, and a potential solution. The referenced "talk" LED on said controller is blinking roughly once per second. I am not sure if that is fast or slow.










