Pol He-3 Target Information GEn
From Hall A Wiki
Contents
- 1 Experiment Information
- 2 Target Operator Instructions
- 3 Checklists
- 4 Target Polarization
- 5 Target Meetings
- 6 Expert Instructions
- 7 Reference Cell Information
- 8 Production Target Cell Information
- 9 Additional Documentation
- 10 Manuals
Experiment Information
The GEn experiment is determining the electric form factor of the neutron to high Q2 by measuring the ratio of the electric form factor of the neutron to proton via recoil polarimetry. The planned kinematic points have changed slightly from the original proposal; however, the impact of these measurements remains intact. The new kinematics are shown Figure 1 along with the expected uncertainty compared to the originally proposed kinematics. These error bars include current estimate of target and datector performance.
Target Operator Instructions
- New PolHe3 Target Training Slides [1]
- Old PolHe3 Target Training Slides [2]
- PNMR Training slides
- How to bring up relevant target GUIs
- Polarized He3 Target Operational Restrictions (raster, beam current limits, etc)
- Procedure for Moving Between Target Cells
- Reference Cell Fill Procedure
- Helmholtz Coils Settings for Different Magnet Configurations
Checklists
- Checklist before starting Target Work inside the Enclosure REVIEW THIS PAGE
- Backout Checklist after Hall Access for Target Work REVIEW THIS PAGE
- Backout Checklist after Target Work inside Enclosure REVIEW THIS PAGE
- Checklist for each shift
Target Polarization
Measurements UPDATE FOR GEn!!
Target Meetings
Expert Instructions
Target Cell
Reference Cell
Cooling Jet Alignment
Pol He3 Field Mapping Data
Pol He3 Field Map from TOSCA simulation
Circular Raster Information
Reset Target Ladder Motion Control
Cable/RTD/Signal Maps
Fiber RTD hardware trip points
PolHe3 Alarm Handler defaults
Reference Cell Information
- Documents from Todd?
Production Target Cell Information
General Specifications for Target Cells
documents from Gordon?
Cells Being Readied for Installation
- Pristine
- Undergoing tests at UVA
- Tiger
- Undergoing tests at UVA
Older Installed Cells
- Ukraine
- Installed in target enclosure: 10/03/2022 to 10/13/2022
- Used for commissioning
- Characterization document: [3]
- Hunter
- Installed in target enclosure: 10/14/2022 to *******
- Installed in target enclosure:
- Used for commissioning
- Used for kinematics points
- Characterization document: [4]
- Windmill
- Installed in target enclosure:
- Used for kinematics points
- Characterization document: [5]
- Fringe
- Installed in target enclosure:
- Used for kinematics points
- Characterization document: [6]
- Chicago
- Installed in target enclosure:
- Used for kinematics points
- Characterization document: [7]
Addition Documentation
information on study of magnetic field alignment in cells?
Additional Documentation
Target CAD Files/Photos
- Document Control Group
- Use 'Advanced Search Options': Category='hall c', Document number='67507'
- Selected Target Shop Drawings
