Construction of Polarized Inelastic Neutron Spectrometer in J-PARC

1st Conference on Light and Particle Beams in Materials Science 2013

物理学;材料科学

Yokoo, T.^1,2 ; Ohoyama, K.^3 ; Itoh, S.^1,2 ; Suzuki, J.^4 ; Nanbu, M.^5 ; Kaneko, N.^1,2 ; Iwasa, K.^6 ; Sato, T.J.^7 ; Kimura, H.^7 ; Ohkawara, M.^3

IMSS, High Energy Accelerator Research Organization (KEK), Ibaraki 305-0801 Tsukuba, Japan^1

J-PARC Center, Ibaraki 319-1195, Tokyo, Japan^2

IMR, Tohoku University, Sendai 980-8577, Japan^3

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

Center of Neutron Science for Advanced Materials, IMR, Tohoku University, Sendai 980-8577, Japan^5

Department of Physics, Tohoku University, Sendai 980-8578, Japan^6

IMRAM, Tohoku University, 980-8577, Sendai, Japan^7

关键词: Elastic and inelastic scattering;    Instrumental design;    Japan proton accelerator research complexes;    Materials research;    Polarization analysis;    Polarized neutrons;    Shielding capability;    Spallation neutron sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/502/1/012046/pdf
DOI  :  10.1088/1742-6596/502/1/012046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The instrumental design of the Polarization Analysis Neutron Spectrometer with Correlation Method (POLANO) is almost ready for its construction, although some discussion on the design still remains. POLANO is a new inelastic neutron spectrometer in the Japan Proton Accelerator Research Complex (J-PARC) utilizing polarized neutrons for comprehensive materials research, focusing on the use of quasi-elastic and inelastic scattering techniques. For instrumental construction, the basic shield design is complete and the shielding capability against radiation has been assessed. Additionally, the designs of the beam transport section using 4 Qc supermirror guide tube are almost complete. Also, detecting section and a large vacuum chamber is now under designing. The development of polarization and chopper devices are the key to the success for the very first application of polarization analysis to inelastic scattering at spallation neutron source. High performance Fermi and T0 choppers are now under manufacturing.