Measuring the Neutron and 3He Spin Structure at Low Q2 - PowerPoint PPT Presentation
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Measuring the Neutron and 3He Spin Structure at Low Q2
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... coupled with a septum magnet. ( inclusive reaction) Septum magnet: horizontal bending dipole ... Septum magnet changes optical properties of spectrometer ... – PowerPoint PPT presentation
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Title: Measuring the Neutron and 3He Spin Structure at Low Q2
1
Measuring the Neutron and 3He Spin Structure at
Low Q2 Vincent Sulkosky College of William and
Mary, Williamsburg VA 23187
Polarized 3He Target
Why 3He as an effective n target?
3He
3He n
Effective polarized neutron target
- Optical pumping of Rb atoms
- Spin exchange between Rb atoms and
- 3He nuclei
- Target cells 40 cm, 10 atm
- Highest polarized luminosity in the
- world up to a few x 1036 s-1
- Ptarg 40
- Two independent polarimetries NMR and EPR
3He target cell
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