High Intensity Neutron Spin Flip Chopper

Article type: Research Article

Authors: Ebisawa, T. | Soyama, K. | Yamazaki, D. | Tasaki, S. | Sakai, K. | Oku, T. | Maruyama, R. | Hino, M.

Affiliations: Neutron Science Research Center, JAERI, Tokai, Ibaraki 319-1195, Japan | Department of Nuclear Engineering, Kyoto University, Kyoto 606-8501, Japan | Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan | Advanced Science Research Center, JAERI, Tokai, Ibaraki 319-1195, Japan | Research Reactor Institute, Kyoto University, Kumatori 590-0494, Osaka Japan

Note: [] Corresponding author. Address: 2-4 Shirakata-Shirane, Tokai-mura, Ibaraki 319-1195, Japan. Fax: +81-72-297-6529. E-mail: ebisawa@sakai.zaq.ne.jp

Abstract: We have proposed multi-stage spin flip chopper system to realize very high S/N ratio. Very high S/N ratios of about 3000 and 105 have been demonstrated for double and triple spin flip chopper systems, respectively. We here describe a double neutron spin flip chopper system applicable to pulsed source using polarizing bent guide tubes instead of simple magenetic mirrors, in order to obtain a high intensity and high S/N ratio. Simulation results show that it will realize spin flip chopper of high neutron intensity and S/N ratios.

Keywords: Neutron spin flip chopper, Polarizing bent guide tube, Pulsed flipper, Pulsed neutron source

DOI: 10.1080/02781070412331298822

Journal: Journal of Neutron Research, vol. 13, no. 1-3, pp. 103-106, 2005