Target NIM Paper

Introduction

• The History of 3He Target
• Why we use polarized 3He target as a quasi-free polarized neutron target
• Different types of 3He target: pumping techniques and comparison
• The use of high pressure 3he target cell in Jefferson Lab hall A

Overview of 3He target setup in Jefferson Lab

• Setup in EEL Building (Joe)
• Setup in Hall A for E06-010 (Joe)
  • Holding field coil
  • Oven
  • Reference cell

3He cell used in Hall A

• 3He cell manufacture (Joe)
• Cell Characterization (Yi')
  • Density measurement
  • Wall thickness measurement

Polarimetry

• NMR polarimetry (Yi')
  • Water calibration of NMR
  • Internal temperature measurement
• EPR polarimetry (Chiranjib)

Special Techniques

• Optics design (Xiaohui/Chiranjib)
• Automatic spin flip (Jin)
• Optical setup without direct phase compensation (Jin)

Future Upgrage

• Spin flip using field flip
• Modifications to the target cell