Development and demonstration of in-situ SEOP 3He spin filter system for neutron spin analyzer on the SHARAKU polarized neutron reflectometer at J-PARC

International Workshop on Neutron Optics and Detectors

Hayashida, H.^1 ; Oku, T.^1 ; Kira, H.^2 ; Sakai, K.^1 ; Takeda, M.^1,3 ; Sakaguchi, Y.^2 ; Ino, T.^4 ; Shinohara, T.^1 ; Ohoyama, K.^5 ; Suzuki, J.^2 ; Kakurai, K.^3 ; Mizusawa, M.^2 ; Miyata, N.^2 ; Yamazaki, D.^1 ; Maruyama, R.^1 ; Soyama, K.^1 ; Arai, M.^1

J-PARC Center, Japan Atomic Energy Agency, Tokyo, Ibaraki 319-1195, Japan^1

Comprehensive Research Organization for Science and Society, Tokyo, Ibaraki 319-1106, Japan^2

Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokyo, Ibaraki 319-1195, Japan^3

High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan^4

Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan^5

关键词: 3He spin filter;    Compact lasers;    Life-sciences;    Neutron spins;    Plane geometry;    Polarized neutrons;    Solid angle;    Supermirrors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/528/1/012020/pdf
DOI  :  10.1088/1742-6596/528/1/012020

来源: IOP

【 摘 要 】

A new neutron reflectometer, SHARAKU, with a vertical sample-plane geometry was installed at beam line 17 at J-PARC Materials and Life Science Facility. Although a polarizing supermirror was previously installed as a neutron spin analyzer on SHARAKU, a3He spin filter is advantageous because it can cover a large solid angle. An in-situ SEOP3He spin filter system using a new compact laser unit has been developed for the analyzer. In this paper, we report a successful off-specular measurement with the new compact in-situ SEOP analyzer at SHARAKU.