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Hall D current response to 1 step in laser attenuator

6 days 3 hours ago
Log Number: 4361487Logbook(s): Entry Makers: mockBody: 

Mostly for Hall D staff.
Fig. 1 is showing how it is difficult to lock exactly on 250nA. By adjusting the attenuator by 1 the current goes from ~256 to 246.

Fig. 2 Shows current remains steady throughout beam delivery despite being slightly higher current than requested.

We do have some Gain / Interval knobs we can try to adjust but idk if they would help us in this situation because the current lock is not telling the attenuator to move.

mock

Operator SIGN IN

6 days 4 hours ago
Log Number: 4361467Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Shenenberger
DATE:             04/20/2025
SHIFT:               Day

The operator has read the following:
alexs

Operator In Training SIGN IN

6 days 4 hours ago
Log Number: 4361461Logbook(s): Body:  ACCELERATOR OPERATOR IN TRAINING SIGN IN FORM OPERATOR:    Shriner
DATE:           04/20/2025
SHIFT:             Day
MENTOR:         Vasilauskis

The operator has read the following:
shriner

Operator SIGN IN

6 days 4 hours ago
Log Number: 4361460Logbook(s): Body:  ACCELERATOR OPERATOR SIGN IN FORM OPERATOR:    Barker
DATE:             04/20/2025
SHIFT:               Day

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

CREW CHIEF SIGN IN

6 days 4 hours ago
Log Number: 4361439Logbook(s): Body: 
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM

Date : 04-20-25
Time : 08:06:09
Day : Sunday
Shift : Day

Crew Chief : Mock
Program Deputy: Nguyen
Team : B
A crew chief in training will be stamping in.
Arm : Shenenberger
Designated SSO: Barker
LERF Operator:
Operators : Barker, Shenenberger

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

Autolog save

6 days 4 hours ago
Log Number: 4361436Logbook(s): Tags: Body: saver ran from opsl632

Saved: mock 04-20-25 08:03:27 {A:3 B:5 C:5 E:1060 A=BS B=BS C=BS D=BS 0R08=0.00 No dumps in. Start of Day shift - After steering corrections.
mock

Owl Shift Beam Chart

6 days 4 hours ago
Log Number: 4361425Logbook(s): Body: 

Channels: IBCAD00CRCUR6, AC:inner:position:y, AC:inner:position:x, IPM5C11B.XPOS, IPM5C11B.YPOS, IPM5C11.XPOS, IPM5C11.YPOS, PSC:coinc:scaler:rate, HD:trig:rate:main

hdops

Shift Information

Shift Day
CEBAF Program Physics!
MCC Crew Chief Blackshaw
MCC Operators Merz, Christian, Shenenberger
Program Deputy Sereno
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