Design of neutron beamline for fundamental physics at J-PARC BL05

Kenji Mishima, Takashi Ino, Kenji Sakai, Takenao Shinohara, Katsuya Hirota, Kazuaki Ikeda, Hiromi Sato, Yoshie Otake, Hitoshi Ohmori, Suguru Muto, Norio Higashi, Takahiro Morishima, Masaaki Kitaguch, Masahiro Hino, Haruhiko Funahashi, Tatsushi Shima, Jun ichi Suzuki, Koji Niita, Kaoru Taketani, Yoshichika SekiHirohiko M. Shimizu

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


A new beamline for a fundamental physics experiment is under construction at BL05 port in the Materials and Life Science Facility (MLF) at Japan Proton Accelerator Research Complex (J-PARC); this beamline is designed using novel techniques of neutron optics and it is termed "Neutron Optics and Physics." The beam from the moderator is deflected by multi-channel supermirrors and split into three branches for individual experiments. In this study, we have optimized the design of the beam optics and shields using the Monte Carlo simulation package PHITS. The neutron fluxes of beams are expected to be 9.2×105 /cm2/μstr/s/MW, 1.2×109 /cm2/s/MW, and 4.0×108 /cm2/s/MW, with polarization of 99.8%.

Original languageEnglish
Pages (from-to)342-345
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1
Publication statusPublished - 2009 Feb 21
Externally publishedYes


  • Fundamental physics
  • Neutron optics
  • Pulsed neutron

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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