Shift How-To

Overview

This page gives instructions for various aspects of the experiment relating to each of the major subsystems and shift tasks.

Shift Roles

• Shift Leader: Executes the Run Plan according to the Run Coordinator's instructions
• Target Operator: Monitors the target system
• Data Quality Monitor: Starts and stops CODA DAQ runs and monitors the quality of the data that is being recorded

Reporting and Logging

All shift takers should regularly log shift details in HALOG - the Hall A electronic logbook.

• Link to HALOG
• Creating HALOG entries

Shift leaders should fill out Beam Time Accounting (BTA) information during the shift.

• BTA steps

Taking Data

• Using the CODA DAQ
  • GUI Description
  • Starting a Run
  • Stopping a Run

• Monitoring the data
• Online analysis
• Shift checklist

Systems

High Voltage

• SBS EPICS

Beam Line

• Monitoring the Beam Line
• Hall A beam line drawing (to be updated)
• SBS checkout procedure
• SBS spot++ (beam size verification)
• SBS BPM calibration
• SBS HARP scan
• SBS Polarization Measurements
  • Compton: Not Used
  • SBS Moller

Target

• Operational Tasks
• Critical Items to Watch
• How to Establish Beam on Target

Magnets

• BigBite for GMn
• Super BigBite for GMn
• Corrector Magnets
• LHRS for GMn

Detectors

BigBite

• GEMs
• GRINCH
• Timing Hodoscope
• Preshower and Shower
• How to adjust discriminator threshold on HCAL DAC

Super BigBite

• GEMs
• HCAL