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

被引：19

作者：

Okudaira, T. ^{[1
]}

Oku, T. ^{[1
,2
]}

Ino, T. ^{[3
]}

Hayashida, H. ^{[4
]}

Kira, H. ^{[4
]}

Sakai, K. ^{[1
]}

Hiroi, K. ^{[1
]}

Takahashi, S. ^{[1
,2
]}

Aizawa, K. ^{[1
]}

Endo, H. ^{[3
]}

Endo, S. ^{[5
,6
]}

Hino, M. ^{[7
]}

Hirota, K. ^{[6
]}

Honda, T. ^{[3
]}

Ikeda, K. ^{[3
]}

Kakurai, K. ^{[4
]}

Kambara, W. ^{[1
]}

Kitaguchi, M. ^{[6
,8
]}

Oda, T. ^{[7
]}

Ohshita, H. ^{[3
]}

Otomo, T. ^{[2
,3
]}

Shimizu, H. M. ^{[6
]}

Shinohara, T. ^{[1
]}

Suzuki, J. ^{[4
]}

Yamamoto, T. ^{[6
]}

机构：

[1] Japan Atom Energy Agcy, J PARC Ctr, 2-1 Shirakata, Tokai, Ibaraki 3191195, Japan

[2] Ibaraki Univ, Grad Sch Sci & Engn, 2-1-1 Bunkyo, Mito, Ibaraki 3108512, Japan

[3] High Energy Accelerator Res Org, Inst Mat Struct Sci, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan

[4] Comprehens Res Org Sci & Soc CROSS, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan

[5] Japan Atom Energy Agcy, Nucl Sci & Engn Ctr, 2-1 Shirane, Tokai, Ibaraki 3191195, Japan

[6] Nagoya Univ, Dept Phys, Chikusa Ku, Nagoya, Aichi 4648602, Japan

[7] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, Kumatori, Osaka 5900494, Japan

[8] Nagoya Univ, Kobayashi Maskawa Inst, Chikusa Ku, Nagoya, Aichi 4648601, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2020年 / 977卷

关键词：

Pulsed neutron beam; Neutron polarization device; POLARIZATION; DESIGN; SPECTROMETERS; SYSTEM; GAS;

D O I：

10.1016/j.nima.2020.164301

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We are developing a neutron polarizer with polarized He-3 gas, referred to as a He-3 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-3 gas-filling station was constructed at J-PARC, and several He-3 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-3 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-3 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-3 spin filter was conducted, and there have been several more since then. The development and utilization of He-3 spin filters at MLF of J-PARC are reported.

引用

页数：8

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