A DESIGN STUDY FOR A NEW NEUTRON COUNTER BASED ON AN ANNULAR TUBE-TYPE 3He DETECTOR THROUGH A MONTE CARLO SIMULATION

被引：0

作者：

Shin, H. S. ^{[1
]}

Joo, J. S. ^{[1
]}

Park, K. J. ^{[1
]}

Lee, T. H. ^{[1
]}

Jung, J. H. ^{[1
]}

Lee, C. Y. ^{[1
]}

Kim, H. D. ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Taejon, South Korea

来源：

NUCLEAR TECHNOLOGY | 2009年 / 168卷 / 01期

关键词：

multiplicity neutron counter; annular tube-type He-3 detector; MCNPX simulation;

D O I：

10.13182/NT09-A9100

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：

A new well-type neutron counter that is composed of a double-layered annular tube He-3 detector, a polyethylene moderator, and a lead gamma shield has been conceptually designed through an MCNPX simulation. A computer program that generates MCNPX input simulating neutron counter performance has been developed with 28 parameters to describe the geometrical structure of the neutron counter and source position. The neutron counter has been optimized to have 72.0-cm, diameter x 68.3-cm height with a double-layered annular tube He-3 detector of 50-cm length and 2.5-cm thickness through repeated MCNPX simulation with the computer program. The neutron counting efficiency appeared to be >42.4%, and the spatial variance in the sample cavity of the counter was estimated to be <3% for its available space.

引用

页码：50 / 54

页数：5