Final design of the Energy-Resolved Neutron Imaging System "RADEN" at J-PARC

6th European Conference on Neutron Scattering

Shinohara, T.^1 ; Kai, T.^1 ; Oikawa, K.^1 ; Segawa, M.^1 ; Harada, M.^1 ; Nakatani, T.^1 ; Ooi, M.^1 ; Aizawa, K.^1 ; Sato, H.^2 ; Kamiyama, T.^2 ; Yokota, H.^3 ; Sera, T.^4 ; Mochiki, K.^5 ; Kiyanagi, Y.^1,6

J-PARC Center, Japan Atomic Energy Agency, Tokai

319-1195, Japan^1

Faculty of Engineering, Hokkaido University, Sapporo

060-8628, Japan^2

Center for Advanced Photonics, RIKEN, Wako

351-0198, Japan^3

Faculty of Engineering, Kyushu University, Fukuoka

819-0395, Japan^4

Faculty of Engineering, Tokyo City University, Tokyo

319-1195, Japan^5

Graduate School of Engineering, Nagoya University, Nagoya

464-8603, Japan^6

关键词: Experimental facilities;    High-energy neutron;    Life-sciences;    Neutron imaging;    Neutron imaging systems;    Pulsed neutron;    State of the art;    Wavelength resolution;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/746/1/012007/pdf
DOI  :  10.1088/1742-6596/746/1/012007

来源: IOP

【 摘 要 】

A new pulsed-neutron instrument, named the Energy-Resolved Neutron Imaging System "RADEN", has been constructed at the beam line of BL22 in the Materials and Life Science Experimental Facility (MLF) of J-PARC. The primary purpose of this instrument is to perform energy-resolved neutron imaging experiments through the effective utilization of the pulsed nature of the neutron beam, making this the world's first instrument dedicated to pulsed neutron imaging experiments. RADEN was designed to cover a broad energy range: from cold neutrons with energy down to 1.05 meV (or wavelength up to 8.8 Å) with a good wavelength resolution of 0.20% to high-energy neutrons with energy of several tens keV (or wavelength of 10-3Å). In addition, this instrument is intended to perform state-of-the-art neutron radiography and tomography experiments in Japan. Hence, a maximum beam size of 300 mm square and a high L/D value of up to 7500 are provided.