Development of a compact in-situ 3He neutron spin filter at J-PARC
This study developed a compact and portable in-situ 3 He neutron spin filter ( in-situ 3 He NSF) utilizing spin-exchange optical pumping at Materials and Life Science Experimental Facility (MLF) of Japan Proton Accelerator Research Complex (J-PARC). This polarizing device aims to enhance the utilization of polarized pulsed neutrons. The length of the in-situ 3 He NSF was 320 mm, making it well-suited for installation in a wide range of neutron instruments, including those with space constraints. Its performance as an incident neutron polarizer was evaluated at MLF, where it achieved a 3 He polarization exceeding 0.6, corresponding to a neutron polarization greater than 0.8 at 1.8 Å. Notably, the in-situ 3 He NSF demonstrated stable operation for 110 h. These outcomes signify that the developed in-situ 3 He NSF facilitates and promotes polarized pulsed neutron experiments.
Authors
- S. Takada (ORCID: https://orcid.org/0000-0001-9259-7737)
- Kazuhisa Kakurai (ORCID: https://orcid.org/0000-0001-5899-7657)
- Masafumi Fujita (ORCID: https://orcid.org/0009-0005-9041-8981)
- Yoichi Ikeda (ORCID: https://orcid.org/0000-0001-5266-5512)
- Ryoji Kiyanagi (ORCID: https://orcid.org/0000-0002-8636-1258)
- Ryosaku Kobayashi
- Kenichi Oikawa (ORCID: https://orcid.org/0000-0003-4913-626X)
- Takashi Ino (ORCID: https://orcid.org/0000-0002-0318-8219)
- Y. Tsuchikawa (ORCID: https://orcid.org/0000-0002-7339-1642)
- Takuya Okudaira (ORCID: https://orcid.org/0000-0002-5150-9275)
- Masahide Harada (ORCID: https://orcid.org/0000-0003-4689-716X)
- Takashi Ohhara (ORCID: https://orcid.org/0000-0002-1215-6032)
- Takayuki Oku (ORCID: https://orcid.org/0000-0001-8042-6113)
- Jirô Suzuki (ORCID: https://orcid.org/0000-0001-7424-3222)
- M. Okuizumi (ORCID: https://orcid.org/0009-0009-0944-3645)
- S. Takahashi (ORCID: https://orcid.org/0000-0003-1609-557X)
- K. Asai
Institutions
- Japan Atomic Energy Agency (JP)
- High Energy Accelerator Research Organization (JP)
- Tohoku University (JP)
- Japan Proton Accelerator Research Complex (JP)
- Comprehensive Research Organization for Science and Society (JP)
- Nagoya University (JP)
- Ibaraki University (JP)
Publication Details
- Journal
- Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
- Published
- 2025-03-16
- DOI
- https://doi.org/10.1016/j.nima.2025.170410
- Citations
- 1
- Primary Topic
- Atomic and Subatomic Physics Research
- Type
- article
- Field-Weighted Citation Impact
- 1.25
Funders
- Japan Society for the Promotion of Science
- Japan Science and Technology Agency