Monte Carlo study of the neutron time emission spectra at the Manuel Lujan Jr. Neutron Scattering Center

被引：9

作者：

Mocko, M. ^{[1
]}

Muhrer, G. ^{[1
]}

Ino, T. ^{[2
]}

Ooi, M. ^{[3
]}

Daemen, L. L. ^{[1
]}

Kiyanagi, Y. ^{[3
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] High Energy Accelerator Res Org, Inst Mat Struct Sci, Neutron Sci Lab, Tsukuba, Ibaraki 3050801, Japan

[3] Hokkaido Univ, Sapporo, Hokkaido 0608628, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 594卷 / 03期

关键词：

neutron moderator; neutron time emission spectrum; MCNPX validation; Monte Carlo simulation;

D O I：

10.1016/j.nima.2008.07.034

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A campaign of neutron-beam characterization measurements was carried out in 2001-2002 at the Manuel Lujan Jr. Neutron Scattering Center (Lujan Center) at the Los Alamos Neutron Science Center (LANSCE), Los Alamos National Laboratory. These experiments provided a valuable comprehensive data set to define the neutron-beam characteristics of the Lujan Center's target-moderator-reflector-shield assembly. To validate the current computer models of the target assembly, we carried out multiple Monte Carlo calculations of the neutron time emission pulses. The results of our simulations are directly compared with the experimental data characterizing five of the six moderators installed in the Lujan target-moderator-reflector-shield system. Our results not only present an important benchmark test of the MCNPX Monte Carlo transport model of the target assembly, but also show the capabilities of the MCNPX code in designing upgrade and future spallation neutron sources. Published by Elsevier B.V.

引用

页码：373 / 381

页数：9

共 12 条

[1] CALCULATION OF THE ORELA NEUTRON MODERATOR SPECTRUM AND RESOLUTION FUNCTION [J].