Operational Procedures for Hall C

Hall C is one of the three experimental areas at JLab. This manual attempts to describe the experimental equipment that makes up this facility and to provide instructions for the safe and effective use of this equipment. In this operations manual safety is addressed in the sense that proven procedures are provided. Potential hazards associated with the operation of each piece of equipment and responsible personnel are listed for each end station subsystem in the Experiment Safety Assessment Document for Hall C Base Equipment (the ESAD).

• General Issues
  • Oxygen Deficiency Hazard
  • Radiation Safety and the Personnel Safety System
    • Induced Activity
    • Radiation Control Personnel
  • AC Power
    • AC Power Distribution System
    • Loss of Site AC Power
      • System: Cryogenic Target
      • System: Vacuum
      • System: HMS or SOS Slit Collimators
      • System: HMS and SOS Spectrometers
      • System:Møller Polarimeter
      • System: Beamline Raster
  • LCW Operations
    • Loss of site LCW
    • Maintenance
  • Fire
  
  
• Beamline and Targets
  • Beamline
    • Control
    • Monitoring
    • Safety procedures
    • Machine/Beam line protection system
    • Reference documents
  • Special Beam Line Elements
    • Raster Systems
    • Superharp Systems
      • The Superharp Device
      • The superharp interface window
      • Using the Program
      • Beam energy measurement
      • Further Help
    • Møller Polarimeter
      • Polarimeter Description
      • Møller Control Software and Hardware
      • Data acquisition
      • Møller Beam line tuning
    • Bremsstrahlung Radiator
      • Radiator Control
  • Current Measuring Devices
    • Unser Monitor
    • RF-Cavity Monitor
  • The Hall C Scattering Chamber
  • The Solid Target Ladder
    • Special Targets
    • Storage
  • The Cryogenic Target System
    • Target Circulation Fan
    • Target Cells
    • Heat Exchangers
    • Heaters
    • Other Features of the Cryotarget System
  
  
• The Hall C Spectrometers
  • Features Common to Both Spectrometers
    • Vacuum Windows
      • Overview
      • Design and Placement of HMS Large Window
      • Other Windows
      • Window Material Testing
      • Vacuum Window Fabrication and Installation Procedure
    • CAEN High Voltage System
      • Overview
      • General Operation
      • Safety Concerns/Caveats
    • The Gas Mixing System
      • Normal Operation.
      • Operating the MKS 647 Mass Flow Controller.
      • Recalibration and Rezeroing
      • Filtering
    • Hall C Laser Pulser System
      • UV Laser System
      • Laser Operation
  
  
• The High Momentum Spectrometer (HMS)
  • Magnets and Power Supplies
    • Personnel
    • Quadrupole Magnets and Cryogenic Procedures
      • Quadrupole Magnets
      • Cryogenic Procedures
      • First Time Startup Check List.
      • Routine Startup Check List Before Energizing Magnets.
      • Long Term Shutdown - Restart Check List:
      • Annual Check List:
    • Dipole Magnet
    • Operation of the HMS Magnets
      • Introduction
      • Magnet Currents
      • Magnet Selection
      • Selecting a magnet
      • Using the keyboard
      • Checking Cryogenics
      • Magnet Operation
      • Dipole Quench Recovery
      • Sample Magnet Control Screens:
  • HMS Vacuum System
  • HMS Slit System
    • Operation of the HMS Slit System
    • Hazard Identification
      • Magnetic:
      • Mechanical:
    • Hazard Mitigation
      • Magnetic
      • Mechanical
  • HMS Carriage and Rotation System
    • Remote Rotation
    • Personnel Trained for Manual Spectrometer Rotation
  • The HMS Detector Package and Shield House
    • High Voltage Supplies
    • Drift Chambers
      • Overview
      • Gas Flow Operating Procedures
      • Electronics Operating Procedures
      • High Voltage Operating Procedures
    • Scintillator Hodoscopes (HMS and SOS)
    • Gas Cerenkov Detector
      • Operation Procedures
      • e/ Procedures
      • /p Procedures
    • Lead Glass Shower Calorimeter
  
  
• Short Orbit Spectrometer (SOS)
  • SOS Magnets and Power Supplies
    • SOS Magnet - Description
    • SOS Magnets - Operation
    • Setting the SOS Hall Probe Zero Offsets
    • Operating Procedure for SOS and HNSS Power Supplies
      • Operating Procedures
      • Maintenance
      • Special Tooling
      • Safety and Preventative Maintenance
  • SOS Vacuum System
  • SOS Slit Systems
    • SOS Slit Box
    • Hazard Identification
      • Magnetic
      • Mechanical
    • Hazard Mitigation
      • Magnetic
      • Mechanical
  • SOS Carriage and Rotation System
    • Introduction
      • Remote Rotation
      • Manual Local Rotation by Authorized Personnel
    • Carriage
    • Pivot
    • Wheels and Angle Readout
    • Rotation
      • Pre-Rotation Checkout
      • Manual Rotation
    • Out-of-Plane Jacks
  • SOS Detector Package and Shield House
    • Shield House and Shield House Door
    • Opening/Closing SOS Shield House Doors
      • Safety Items
      • Manual Door Operation
    • High Voltage Supplies
    • Drift Chambers
      • Overview
      • Personnel and Troubleshooting
      • Gas Flow Operation Procedures
      • High Voltage Operation Procedures
      • Low Voltage Operation Procedures
      • Threshold System
      • Start-of-Run and End-of-Run Procedures
    • Scintillator Hodoscopes
    • SOS Gas Cerenkov Counter
      • Location and Positioning
      • Gas Handling System
      • Beam Entrance and Exit Windows
      • High Voltage
      • Photomultiplier Tubes and Bases
      • Mirrors
      • Online Issues
    • Lead Glass Shower Calorimeter
    • SOS Aerogel Detector
      • Operation Procedures
  
  
• Counting House
  • Cabling and Electronics
    • Cabling
    • Coincidence Electronics
    • Timing Philosophy
    • Cable Delay Calculation
    • Electronics Operating Procedures
      • Hodoscope, Beginning of Run Hardware Checkout
      • Calorimeter, Beginning of Run Hardware Checkout
      • Cerenkov, Beginning of Run Hardware Checkout
      • Trigger, Beginning of Run Hardware Checkout
  • Changes to Kinematics, Beginning of Run Hardware Checkout
  • Regular Hardware Checks (1 per shift or 1 per day)
  • Data (Software) Checks (1 per day, shift, or run)
  • Hall C Terminal Servers
  • Data Acquisition
    • What Needs To Be Turned On
    • Starting Control Systems
    • Reconfiguring the High Voltage system
    • Setting Data Acquisition (CODA 2.1)
    • Taking data
    • What To Do When Disk Space Runs Out
  
  
• Trouble Shooting Procedures
  • Remotely Rebooting Crashed or Corrupt VME CPUs
  • ROC Login
  • Reprogramming sfihms
  • Rebooting other stuff
  • Online Data Replay