Information for Shift Takers

Quick Links

HOW TOs

Experts on call

Hall A Tools

Shift Checklist How To

CODA

Set HRS magnets

Online analysis How-To

In the process of editing and updating this page. Please contact Juliette Mammei crowder@jlab.org with questions or suggestions.

CREX Main

Important Note for Shift Workers

• Post separate HALOG entry for status changes/events
• Please fill out the Shift Checklist at the beginning of the shift
• Access arrangement should be done through the Run Coordinator
• Documentation of Online Plots
• Documentation of all alarms
• Determining tasks and allocating responsibilities is up to the Shift Leader and shift crew to decide amongst themselves at the beginning of a shift

General Instructions for shift crew for parity running

• watch out for
  • ion chambers
  • collimator temps
  • detector voltages in pengui (usl 5.6 V usr 5.2 V at 70 uA)
  • BPM saturation
  • position locks for > 1 uA: BPMA (x=0.2; y=-0.5) BPME (x=0.2; y=-0.5)
  • raster : 12 by 7.2 in MCC units (width by height) raster synch/unsynced values in the white board outdated?
• make sure
  • Charge feedback is on
  • FFB ON (see FFB GUI: FF ON, FF DAC ON, EnergyModeRF ON)
  • BeamMod ON after beam is established (BPM gains set and stable and FFB ON)

Before your shift

• First!! Please read and sign the safety documentation in the counting house. A readable version can be found here!

• Second!! Please sign up for more shifts

Shift Workers and Their Responsibilities

• Shift Leader - Point of contact between RC/MCC and shift workers; takes data

• Target Operator - Monitors the target, moving it as necessary
• Analysis Shift Worker - Assist shift crew in data taking, makes sure online analysis is up to date
• Weekly Analysis Coordinator (WAC) - Performs the offline analysis checks

• Run Coordinator (RC) - Responsible for safe and efficient running of the experiment