Design of a pre-collimator system for neutronics benchmark experiment

CAI Xinggang1; 2 NIE Yangbo2 BAO Jie2 LU Yanxia1 LIU Jiantao1; 2 RUAN Xichao2 1

doi:10.11889/j.0253-3219.2013.hjs.36.010201

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Design of a pre-collimator system for neutronics benchmark experiment

更新时间：2021-06-03

- Design of a pre-collimator system for neutronics benchmark experiment
- NUCLEAR TECHNIQUES Vol. 36, Issue 1, Article number: 010201(2013)
- 作者机构：
  
  1. 南华大学
  2. 中国原子能科学研究院核数据重点实验室
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2013.hjs.36.010201
  CLC： O571.5-33
- Published：2013
- 稿件说明：
移动端阅览
[1]蔡兴钢,聂阳波,鲍杰,鲁彦霞,刘剑韬,阮锡超.中子学积分实验前级准直系统的设计[J].核技术,2013,36(01):8-13.

CAI Xinggang1, 2 NIE Yangbo2 BAO Jie2 LU Yanxia1 LIU Jiantao1, 2 RUAN Xichao2 1. Design of a pre-collimator system for neutronics benchmark experiment[J]. Nuclear techniques, 2013, 36(1): 010201
[1]蔡兴钢,聂阳波,鲍杰,鲁彦霞,刘剑韬,阮锡超.中子学积分实验前级准直系统的设计[J].核技术,2013,36(01):8-13. DOI： 10.11889/j.0253-3219.2013.hjs.36.010201.

CAI Xinggang1, 2 NIE Yangbo2 BAO Jie2 LU Yanxia1 LIU Jiantao1, 2 RUAN Xichao2 1. Design of a pre-collimator system for neutronics benchmark experiment[J]. Nuclear techniques, 2013, 36(1): 010201 DOI： 10.11889/j.0253-3219.2013.hjs.36.010201.

摘要

积分实验是检验评价中子核数据可靠性和精准度的重要手段

效应/本底比是衡量积分实验数据品质的重要参数。为了获得更高的效应/本底比

对中国原子能科学研究院积分实验使用的前级准直系统进行了设计

该系统主要由前级准直器和阴影锥组成。利用MCNP-4C程序对不同条件下的本底谱进行了模拟

结果显示

加上前级准直系统之后

效应/本底比有非常明显的改善。

Abstract

Benchmark experiment is an important means to inspect the reliability and accuracy of the evaluated nuclear data

the effect/background ratios are the important parameters to weight the quality of experimental data.In order to obtain higher effect/background ratios

a pre-collimator system was designed for benchmark experiment.This system mainly consists of a pre-collimator and a shadow cone.The MCNP-4C code was used to simulate the background spectra under various conditions

from the results we found that with the pre-collimator system have a very marked improvement in the effect / background ratios.

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