Polarization of very cold neutron using a permanent magnet quadrupole

Tamaki Yoshioka, Kenji Mishima, Takashi Ino, Kaoru Taketani, Suguru Muto, Takahiro Morishima, Hirohiko M. Shimizu, Takayuki Oku, Junichi Suzuki, Takenao Shinohara, Kenji Sakai, Hiromi Sato, Katsuya Hirota, Yoshie Otake, Masaaki Kitaguchi, Masahiro Hino, Yoshichika Seki, Yoshihisa Iwashita, Masako Yamada, Masahiro IchikawaTakanori Sugimoto, Shinsuke Kawasaki, Sachio Komamiya, Hidetoshi Otono, Yoshio Kamiya, Satoru Yamashita, Peter Geltenbort

Research output: Contribution to journalArticle

Abstract

For the future fundamental physics experiments by using cold neutrons, we are developing a device which can measure the neutron polarization degree by accuracy significantly below 10-3. A quadrupole magnet is one of the promising candidate to measure the neutron polarization degree by such extremely high precision. We have performed a polarization experiment by using the quadrupole magnets at the Very Cold Neutron (VCN) port of the PF-2 in the Institute Laue-Langevin (ILL). As a result, we obtained the polarization degree P with very high accuracy P=0.9994±0.0001(stat.)±0.0003(syst.), which meet our requirement significantly.

Original languageEnglish
Pages (from-to)S17-S20
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume634
Issue number1 SUPPL.
DOIs
Publication statusPublished - 2011 Apr 1

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Keywords

  • Neutron polarizer
  • Polarized neutron
  • Quadrupole magnet

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

Yoshioka, T., Mishima, K., Ino, T., Taketani, K., Muto, S., Morishima, T., Shimizu, H. M., Oku, T., Suzuki, J., Shinohara, T., Sakai, K., Sato, H., Hirota, K., Otake, Y., Kitaguchi, M., Hino, M., Seki, Y., Iwashita, Y., Yamada, M., ... Geltenbort, P. (2011). Polarization of very cold neutron using a permanent magnet quadrupole. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 634(1 SUPPL.), S17-S20. https://doi.org/10.1016/j.nima.2010.05.029