Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole

Yasushi Arimoto; Yoshihisa Iwashita; Tamaki Yoshioka; Masaaki Kitaguchi; Sohei Imajo; Hirohiko M. Shimizu; Koichiro Asahi; Takashi Ino; Yoshio Kamiya; Kenji Mishima; Suguru Muto; Kenji Sakai; Tatsushi Shima; Kaoru Taketani; Satoru Yamashita; Akihiro Yoshimi

doi:10.1109/TASC.2012.2183569

Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole

Yasushi Arimoto, Yoshihisa Iwashita, Tamaki Yoshioka, Masaaki Kitaguchi, Sohei Imajo, Hirohiko M. Shimizu, Koichiro Asahi, Takashi Ino, Yoshio Kamiya, Kenji Mishima, Suguru Muto, Kenji Sakai, Tatsushi Shima, Kaoru Taketani, Satoru Yamashita, Akihiro Yoshimi

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Ultra-cold neutron (UCN) is attractive for a search of the neutron electric dipole moment (nEDM). It is crucial to store UCNs with high density in a bottle for nEDM measurement apparatus. To increase the density, time focusing technique can be useful, where slow neutrons are accelerated and fast neutrons are decelerated by using magnetic potential. This device is called rebuncher. The rebuncher consists of a gradient magnet, RF coil, and neutron guide. The magnet generates a field gradient of 3.5 T/m (from 1 T to 0.2 T within 24 cm) in the longitudinal direction. By using anisotropic inter-poles, the magnet is compact and keeps the gradient uniform. The fabricated magnet showed good performance as designed.

Original language	English
Article number	6156745
Journal	IEEE Transactions on Applied Superconductivity
Volume	22
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2012.2183569
Publication status	Published - Jun 25 2012

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Keywords

Gradient magnet
rebuncher
time focusing
ultra-cold neutron

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Cite this

Arimoto, Y., Iwashita, Y., Yoshioka, T., Kitaguchi, M., Imajo, S., Shimizu, H. M., Asahi, K., Ino, T., Kamiya, Y., Mishima, K., Muto, S., Sakai, K., Shima, T., Taketani, K., Yamashita, S., & Yoshimi, A. (2012). Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole. IEEE Transactions on Applied Superconductivity, 22(3), [6156745]. https://doi.org/10.1109/TASC.2012.2183569

Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole. / Arimoto, Yasushi; Iwashita, Yoshihisa; Yoshioka, Tamaki; Kitaguchi, Masaaki; Imajo, Sohei; Shimizu, Hirohiko M.; Asahi, Koichiro; Ino, Takashi; Kamiya, Yoshio; Mishima, Kenji; Muto, Suguru; Sakai, Kenji; Shima, Tatsushi; Taketani, Kaoru; Yamashita, Satoru; Yoshimi, Akihiro.

In: IEEE Transactions on Applied Superconductivity, Vol. 22, No. 3, 6156745, 25.06.2012.

Research output: Contribution to journal › Article

Arimoto, Y, Iwashita, Y, Yoshioka, T, Kitaguchi, M, Imajo, S, Shimizu, HM, Asahi, K, Ino, T, Kamiya, Y, Mishima, K, Muto, S, Sakai, K, Shima, T, Taketani, K, Yamashita, S & Yoshimi, A 2012, 'Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole', IEEE Transactions on Applied Superconductivity, vol. 22, no. 3, 6156745. https://doi.org/10.1109/TASC.2012.2183569

Arimoto, Yasushi ; Iwashita, Yoshihisa ; Yoshioka, Tamaki ; Kitaguchi, Masaaki ; Imajo, Sohei ; Shimizu, Hirohiko M. ; Asahi, Koichiro ; Ino, Takashi ; Kamiya, Yoshio ; Mishima, Kenji ; Muto, Suguru ; Sakai, Kenji ; Shima, Tatsushi ; Taketani, Kaoru ; Yamashita, Satoru ; Yoshimi, Akihiro. / Development of longitudinal-gradient magnet for time focusing of ultra-cold neutron with anisotropic inter-pole. In: IEEE Transactions on Applied Superconductivity. 2012 ; Vol. 22, No. 3.

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abstract = "Ultra-cold neutron (UCN) is attractive for a search of the neutron electric dipole moment (nEDM). It is crucial to store UCNs with high density in a bottle for nEDM measurement apparatus. To increase the density, time focusing technique can be useful, where slow neutrons are accelerated and fast neutrons are decelerated by using magnetic potential. This device is called rebuncher. The rebuncher consists of a gradient magnet, RF coil, and neutron guide. The magnet generates a field gradient of 3.5 T/m (from 1 T to 0.2 T within 24 cm) in the longitudinal direction. By using anisotropic inter-poles, the magnet is compact and keeps the gradient uniform. The fabricated magnet showed good performance as designed.",

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AB - Ultra-cold neutron (UCN) is attractive for a search of the neutron electric dipole moment (nEDM). It is crucial to store UCNs with high density in a bottle for nEDM measurement apparatus. To increase the density, time focusing technique can be useful, where slow neutrons are accelerated and fast neutrons are decelerated by using magnetic potential. This device is called rebuncher. The rebuncher consists of a gradient magnet, RF coil, and neutron guide. The magnet generates a field gradient of 3.5 T/m (from 1 T to 0.2 T within 24 cm) in the longitudinal direction. By using anisotropic inter-poles, the magnet is compact and keeps the gradient uniform. The fabricated magnet showed good performance as designed.

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10.1109/TASC.2012.2183569