High-intensity and versatile chopper spectrometer project for J-PARC

被引：1

作者：

Sato, T. J. ^{[1
,2
]}

Yamamuro, O. ^{[1
]}

Hirota, K. ^{[1
]}

Shibayama, M. ^{[1
]}

Yoshizawa, H. ^{[1
]}

Itoh, S. ^{[3
]}

Watanabe, S. ^{[1
]}

Asami, T. ^{[1
]}

Kindo, K. ^{[4
]}

Uwatoko, Y. ^{[4
]}

Kanaya, T. ^{[5
]}

机构：

[1] Univ Tokyo, ISSP, Neutron Sci Lab, Tokai, Ibaraki 3191106, Japan

[2] SORST Japan Sci & Technol Agcy, Kawaguchi, Saitama, Japan

[3] High Energy Accelerator Res Org KEK, Neutron Sci Lab, Tsukuba, Ibaraki 3050801, Japan

[4] Univ Tokyo, ISSP, Chiba 2778581, Japan

[5] Kyoto Univ, ICR, Uji, Kyoto 6110011, Japan

来源：

JOURNAL OF NEUTRON RESEARCH | 2008年 / 16卷 / 3-4期

关键词：

Chopper spectrometer; Neutron scattering; Direct geometry;

D O I：

10.1080/10238160903361082

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

We have proposed a versatile inelastic neutron spectrometer (VINS) for the spallation neutron source at the Materials and Life Science Facility, Japan Proton Accelerator Research Complex. This is a directgeometry Fermi chopper spectrometer, aimed at realizing a very high neutron flux with reasonable energy and Q resolutions. A wide energy-transfer range of 0.5 < E < 1000 meV will be covered with two energy-resolution modes, Delta E/E-i similar to 5 and 2.5%. Q range will also be considerably large as up to 40 angstrom(-1) at E-i = 1000 meV, enabled by an array of detectors covering -30 < 2 theta < 130 degrees (2.8 Sr). Preliminary Monte Carlo simulation predicts the maximum flux of 10 6 neutrons/cm(2)/s at the sample position for E-i = 10 meV (assuming that the neutron source is running at 1 MW). With the remarkably high neutron flux, VINS will be a unique tool for various types of condensed matter research, in particular, those which have never been explored by inelastic neutron scattering due to sample size restriction.

引用

页码：113 / 119

页数：7

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