Measurement of the neutron beam polarization of BL05/NOP beamline at J-PARC

T. Ino, Y. Arimoto, T. Yoshioka, K. Mishima, K. Taketani, S. Muto, H. M. Shimizu, H. Kira, Y. Sakaguchi, T. Oku, K. Sakai, T. Shinohara, J. Suzuki, H. Otono, H. Oide, S. Yamashita, S. Imajo, H. Funahashi, M. Yamada, Y. IwashitaM. Kitaguchi, M. Hino, Z. Suzuki, T. Sanuki, T. Seki, K. Hirota, K. Ikeda, H. Sato, Y. Otake, H. Ohmori, Takahiro Morishima, T. Shima

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We measured the neutron beam polarization of the BL05/NOP (Neutron Optics and Physics) beamline at J-PARC with an accuracy of less than 10-3 using polarized 3He gas as a neutron spin analyzer. Precise polarimetry of the neutron beam is necessary to understand the beamline optics as well as for the asymmetry measurements of the neutron beta decay, which are planned in this beamline.

Original languageEnglish
Pages (from-to)2424-2428
Number of pages5
JournalPhysica B: Condensed Matter
Issue number12
Publication statusPublished - 2011 Jun


  • He polarization
  • J-PARC
  • Neutron beta decay
  • Neutron spin filter
  • Polarized neutron
  • Spin-exchange optical pumping

ASJC Scopus subject areas

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


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