Development and application of a 3He Neutron Spin Filter at J-PARC

• Okudaira, T.

• Oku, T.

• Ino, T.

• Hayashida, H.

• Kira, H.

• Sakai, K.

• Hiroi, K.

• Takahashi, S.

• Aizawa, K.

• Endo, H.

• Endo, S.

• Hino, M.

• Hirota, K.

• Honda, T.

• Ikeda, K.

• Kakurai, K.

• Kambara, W.

• Kitaguchi, M.

• Oda, T.

• Ohshita, H.

• Otomo, T.

• Shimizu, H.M.

• Shinohara, T.

• Suzuki, J.

• Yamamoto, T.

Bibliographic Information

Other Title

• Development and application of a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e550" altimg="si44.svg"><mml:msup><mml:mrow /><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:math>He Neutron Spin Filter at J-PARC

Abstract

We are developing a neutron polarizer with polarized He gas, referred to as a He spin filter, based on the Spin Exchange Optical Pumping (SEOP) for polarized neutron scattering experiments at Materials and Life Science Experimental Facility (MLF) of Japan Proton Accelerator Research Complex (J-PARC). A He gas-filling station was constructed at J-PARC, and several He cells with long spin relaxation times have been fabricated using the gas-filling station. A laboratory has been prepared in the MLF beam hall for polarizing He cells, and compact pumping systems with laser powers of 30 W and 110 W, which can be installed onto a neutron beamline, have been developed. A He polarization of 85% was achieved at a neutron beamline by using the pumping system with the 110 W laser. Recently, the first user experiment utilizing the He spin filter was conducted, and there have been several more since then. The development and utilization of He spin filters at MLF of J-PARC are reported.

Journal

• Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

  Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 977 164301-, 2020-10-11

  Elsevier BV

Keywords

• Pulsed neutron beam
• Neutron polarization device

Details

• CRID: 1050567175245218688
• NII Article ID: 120006882449
• ISSN: 01689002
• DOI: 10.1016/j.nima.2020.164301
• HANDLE: 2433/254191
• Web Site: https://api.elsevier.com/content/article/PII:S0168900220306975?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S0168900220306975?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
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