A large area polarized He-3 neutron spin filter
Type of Work
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
A large area polarized He-3 neutron spin filter has been developed and tested in long-term operation. The polarizer cells have area 50 cm(2) and larger allowing access to a large area neutron beam. Polarization of He-3 up to 57 +/- 1% was measured by monitoring the neutron transmission through the He-3. The polarization was maintained over the course of several weeks, but the maximum attainable polarization declined over the course of a year-long run as the cell degraded, possibly due to long-term exposure to the neutron beam at high temperatures. The resulting neutron polarization and transmission are velocity dependent and are optimized for 5 angstrom. Cell construction, polarizer design, performance, and polarimetry are described in this paper. (C) 2007 Published by Elsevier B.V.
Chupp, T. E.; Coulter, K. P.; Kandes, M.; Sharma, M.; Smith, T. B.; Jones, Gordon L.; Chen, W. C.; Gentile, T. R.; Rich, D. R.; Lauss, B.; Gericke, M. T.; Gillis, R. C.; Page, S. A.; Bowman, J. D.; Penttila, S. I.; Wilburn, W. S.; Dabaghyan, M.; Hersman, F. W.; and Mason, M., "A large area polarized He-3 neutron spin filter" (2007). Hamilton Digital Commons.
Hamilton Areas of Study