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Proceedings Paper

Development of a magnetic lens and prism for cold neutrons and their application to neutron scattering experiments
Author(s): Takayuki Oku; Tomohiro Adachi; Hiromi Sato; Chico Otani; Yoshiyuki Takizawa; Kenji Sakai; Hirohiko M. Shimizu; Keita Sasaki; Hirokatsu Iwasa; Takashi Kamiyama; Yoshiaki Kiyanagi; Takashi Ino; Michihiro Furusaka; Junichi Suzuki; Masahiro Hino; Seiji Tasaki; Tohru Ebisawa
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Paper Abstract

We have been developing a neutron lens and prism based on neutron refractive optics. As a neutron has a magnetic dipole moment, it is accelerated in a magnetic field gradient. Thus, we can control a neutron beam free from beam attenuation using the magnetic field gradient. Moreover, its spin dependence of the acceleration is profitable in the case of using the polarized neutron beam. The sextupole magnetic field functions as a focusing or defocusing lens for neutrons depending on the neutron spin states. The focusing and defocusing effects of a prototype sextupole magnet was experimentally studied. By combining focusing and defocusing functions of the sextupole magnet, we can control the neutron beam shape and divergence more flexibly. Adiabatic and nonadiabatic field connections make it possible to realize the magnetic doublet system. A quadrupole magnetic field functions as a neutron prism, which were experimentally confirmed. The neutron spin and energy dependence of the refracting power is applicable to an analysis of the neutron spin and energy. In this paper, the details of the experimental results of the magnetic devices are described and their applications in the neutron scattering experiment are discussed.

Paper Details

Date Published: 8 November 2001
PDF: 10 pages
Proc. SPIE 4509, Neutron Optics, (8 November 2001); doi: 10.1117/12.448064
Show Author Affiliations
Takayuki Oku, RIKEN-The Institute of Physical and Chemical Research (Japan)
Tomohiro Adachi, RIKEN-The Institute of Physical and Chemical Research (Japan)
Hiromi Sato, RIKEN-The Institute of Physical and Chemical Research (Japan)
Chico Otani, RIKEN-The Institute of Physical and Chemical Research (Japan)
Yoshiyuki Takizawa, RIKEN-The Institute of Physical and Chemical Research (Japan)
Kenji Sakai, RIKEN-The Institute of Physical and Chemical Research and Tokyo Institute of Technology (Japan)
Hirohiko M. Shimizu, RIKEN-The Institute of Physical and Chemical Research (Japan)
Keita Sasaki, Hokkaido Univ. (Japan)
Hirokatsu Iwasa, Hokkaido Univ. (Japan)
Takashi Kamiyama, Hokkaido Univ. (Japan)
Yoshiaki Kiyanagi, Hokkaido Univ. (Japan)
Takashi Ino, High Energy Accelerator Research Organization (Japan)
Michihiro Furusaka, High Energy Accelerator Research Organization (Japan)
Junichi Suzuki, Japan Atomic Energy Research Institute (Japan)
Masahiro Hino, Kyoto Univ. (Japan)
Seiji Tasaki, Kyoto Univ. (Japan)
Tohru Ebisawa, Kyoto Univ. (Japan)


Published in SPIE Proceedings Vol. 4509:
Neutron Optics
James L. Wood; Ian S. Anderson, Editor(s)

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