Magnetic shield design of in-situ SEOP polarized 3He neutron spin filter system

H. Kira, Y. Sakaguchi, J. Suzuki, T. Oku, M. Nakamura, M. Arai, K. Kakurai, Y. Endo, Y. Arimoto, T. Ino, H. M. Shimizu, T. Kamiyama, K. Ohoyama, H. Hiraka, K. Tsutsumi, K. Yamada, L. J. Chang

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


A polarized 3He neutron spin filter requires a suitably homogeneous magnetic environment to avoid depolarization of 3He nuclear spin. In the present study, we discussed the required performance of the magnetic shield for an in-situ spin exchange optical pumping neutron spin filter system and designed a magnetic shield with T1mag > 100 h under a magnetic field of 3.5 mT perpendicular to the guide field. We then constructed the magnetic shield and confirmed its performance. Finally, we succeeded in developing a magnetic shield for a polarized 3He neutron spin filter system for J-PARC.

Original languageEnglish
Pages (from-to)200-205
Number of pages6
JournalPhysics Procedia
Publication statusPublished - 2013
Externally publishedYes
Event9th International Workshop on Polarised Neutrons in Condensed Matter Investigations, PNCMI 2012 - Paris, France
Duration: 2012 Jul 22012 Jul 5


  • Magnetic shield
  • Neutron spin filter
  • Spin exchange optical pumping

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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