Feed aggregator

Log Number: 3640204Logbook(s): 

• ELOG
• LERFLOG

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

Date : 12-18-18
Time : 23:22:08
Day : Tuesday
Shift : Owl

Crew Chief : Carlino
Program Deputy: Larrieu
Team : X
Arm : Echeverria
Designated SSO: Gauthier
LERF Operator:
Operators : Echeverria, Gauthier

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

Log Number: 3640200Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to B/C/D

Log Number: 3640199Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN

Log Number: 3640177Logbook(s): 

• ELOG

Entry Makers: eformanBody: 

It looks like the Hall D PID lock parameters had been changed at some point and the current was taking an excessive time to ramp. I don't recall what the previous parameters were (and they're not archived), but I have tweaked them to a more reasonable value (figure 1).

Figure 2 shows the excessive ramp time to get to 200 nA. I ended up helping it along manually at the tail end (where the obvious discontinuity is).

Figure 3 (at time 18:48:01) shows the ramp time after entering the PID parameters in fig.1.

Log Number: 3640172Logbook(s): 

• HDLOG
• ELOG

Tags: 

• Beamline

Entry Makers: deurpamBody: 

The shoulder in the x of the harp seem smaller but the beam is very wide. The background seen in the tagger counter still correlates well with the x-position of the beam, see Figure. (black: background, red:5C11-x, pink: 5C11A-x, cyan: 5C11B-x, and green: AD00C-x. Blue is the beam current, which is stable around 9nA).

Log Number: 3640166Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl05

Saved: frierson 12-18-18 18:02:03 {A:5 B:4 C:3 E:805 A=BS B=CW C=CW D=CW 0R08=16.26 No dumps in.

Log Number: 3640164Logbook(s): 

• HDLOG
• ELOG

Tags: 

• HarpScan
• Beamline

Body: 

At nominal 200nA

Log Number: 3640157Logbook(s): 

• HDLOG
• ELOG

Tags: 

• HarpScan
• Beamline

Body: 

10 nA (after Hovanes kindly lowered the threshold to 4nA)

Log Number: 3640152Logbook(s): 

• ELOG

Body: 

HYST AREA Version 5-2 has successfully cycled the following:

Area.Halls.HallD

Total Time: 4.667 mins

Log Number: 3640147Logbook(s): 

• ELOG

Tags: 

• Autolog

Body: saver ran from opsl03

Saved: chumphry 12-18-18 16:38:59 {A:5 B:4 C:3 E:805 A=BS B=CW C=CW D=BS 0R08=15.78 No dumps in.

Log Number: 3640146Logbook(s): 

• ELOG

Body: 

starting to connect 1f05a viewer to 1f05 girder

Log Number: 3640143Logbook(s): 

• ELOG

Body: 

The cryo can end will be closed tomorrow morning. The big
bellows in the middle will be pulled back to retrieve the
instrumentation wires and re-route them. And then the
bellows will be pulled back into place.

Log Number: 3640142Logbook(s): 

• ELOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Humphry
DATE:             12/18/2018
SHIFT:               Swing

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

Log Number: 3640140Logbook(s): 

• ELOG

Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Forman
DATE:             12/18/2018
SHIFT:               Swing

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

Log Number: 3640137Logbook(s): 

• ELOG

Body: 

Resistance and Inductance measurements recorded for all (22)
0F magnets in trim rack FL05B13. Visual inspections
completed for all 0F magnets, no problems found.

Log Number: 3640136Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause5664Title:
Hall D request CA

Summary:
Hall D is doing a short configuration change in preparation for high current running.Duration:
37 minutes

Time Down:
18-Dec-2018 15:27

Log Number: 3640132Logbook(s): 

• ELOG
• LERFLOG

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

Date : 12-18-18
Time : 15:51:46
Day : Tuesday
Shift : Swing

Crew Chief : Frierson
Program Deputy: Larrieu
Team : C
Arm : Forman
Designated SSO: Humphry
LERF Operator:
Operators : Forman, Humphry

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

Log Number: 3640127Logbook(s): 

• ELOG

Body: IDDescriptionPeriodCause5664Title:
Hall D request CA

Summary:
Hall D is doing a short configuration change in preparation for high current running.Duration:
3 minutes

Time Down:
18-Dec-2018 15:27

Log Number: 3640114Logbook(s): 

• ELOG

Tags: 

• ShiftSummary

Body:  CEBAF SHIFT LOG Shift Summary

Start of shift: Beam to B/C/D

Log Number: 3640113Logbook(s): 

• ELOG

Tags: 

• BeamAccounting

Body:  Accelerator PHYSICS STUDIES RESTORE ACC DOWN