Recent Log Entries

Recovering CHL1

Log Number: 3881184Logbook(s): Entry Makers: creelBody: 

Back filling tunnel
Recooling transferlines for SL and LERF
Preparing for a pumpdown

Unable to Open All Injector SRF Slow Valves

Log Number: 3881183Logbook(s): Entry Makers: moserBody: 

Fast valves are open, slow valves (VBVs) on the other hand, not taking any open request. Tried individual valves VBV0L00{A,B}, tried the Open All SRF valves button in the upper right of Figure 1, after resets of botyh 7-cell and 5-cell cavities.

SC1R trip due to miscommunications

Log Number: 3881182Logbook(s): Entry Makers: creelBody: 

We were in the middle of the 200 g/s run required for the ALAT cold compressor performance testing and through a miscommunications the RF was turned on in the South LINAC.

The SC1R has not passed commissioning yet and has only been running at 2K for a few days. It is a long way from prime time.

I have asked the MCC to post a moratorium on putting RF power into the South.

Southern RF problems requiring attention

Log Number: 3881181Logbook(s): Entry Makers: gauthierBody: 

The following problems require attention in the south linac:

- 2L04 not going into HV.
- 2L06-3 not producing forward power.
- 2L07-7 not producing forward power.
- 2L16-4 dropping on KRRP.
- 2L16-5 dropping on KRRP.

All south linac RF zones besides 2L04 are currently in high voltage.

Operator SIGN IN

Log Number: 3881179Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Anthony
DATE:             06/19/2021
SHIFT:               Swing

The operator has read the following:
  • ELOG
  • PD Shift Plan
  • Radiation Surveys for PSS Segments in Controlled Access
  • PSS Log

Don't Turn On These RF Zones

Log Number: 3881178Logbook(s): Entry Makers: moserBody: 

Do not turn on the following RF zones --

* ALL SL zones
* 1L{04, 05, 06, 07, 12, 13, 18, 19, 20}

CREW CHIEF SIGN IN

Log Number: 3881177Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 06-19-21
Time : 15:42:24
Day : Saturday
Shift : Swing

Crew Chief : Moser
Program Deputy: Carlino
Team : X
Arm : RADCON
Designated SSO: Anthony
LERF Operator:
Operators : Anthony

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

SC1R 2K Coldbox Tripped -- DO NOT TURN ON SL RF

Log Number: 3881176Logbook(s): Tags: Entry Makers: moserBody: 

Cryo just called. The new 2K coldbox, supplying the SL w/cryogens, Figure 3, has tripped. Figures 1 and 2: This happened because we were turning on SL RF, Figures 1 and 2 and linked log, per instruction.

This coldbox is not ready.

DO NOT TURN ON SL RF.

Inline Dump Locked In Place

Log Number: 3881175Logbook(s): Tags: Entry Makers: moserBody: 

Inline dump is inserted and locked out such that it cannot be removed. Both RCG1 and CC locks are applied to the airlines.

Orbit drift corrected

Log Number: 3881174Logbook(s): Entry Makers: ywangBody: 

Could not find what caused the orbit drift. Corrected it by some minor steering.

Autolog save

Log Number: 3881172Logbook(s): Tags: Body: saver ran from opsl632

Saved: ywang 06-19-21 15:26:42 {A:1 B:5 C:1 E:1050 A=Tune B=BS C=BS D=BS 0R08=0.00 0R08 dump in.

Autolog restore

Log Number: 3881169Logbook(s): Tags: Body: saver ran from opsl632
Data from: /usr/opdata/burt/allsnap/06-18-21_20:27:58
Restored file: /tmp/06-19-21_15:11:40.snap


2L16-4 tripping on KRRP

Log Number: 3881168Logbook(s): Entry Makers: gauthierBody: 

2L16-4 tripping out out of RF on reflected power while open loop tuning.

NL03-8 tuner error

Log Number: 3881165Logbook(s): Entry Makers: friersonBody: 

Cannot manually tune cavity due to error when tuning in negative direction

Pages