...
首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment >Simulation of a high energy neutron irradiation facility at beamline 11 of the China Spallation Neutron Source
【24h】

Simulation of a high energy neutron irradiation facility at beamline 11 of the China Spallation Neutron Source

机译:中国散裂中子源束线11处高能中子辐照设施的模拟

获取原文
获取原文并翻译 | 示例
           

摘要

The China Spallation Neutron Source (CSNS) will accommodate 20 neutron beamlines at its first target station. These beamlines serve different purposes, and beamline 11 is designed to analyze the degraded models and damage mechanisms, such as Single Event Effects in electronic components and devices for aerospace electronic systems. This paper gives a preliminary discussion on the scheme of a high energy neutron irradiation experiment at the beamline 11 shutter based on the Monte Carlo simulation method. The neutron source term is generated by calculating the neutrons scattering into beamline 11 with a model that includes the target-moderator-reflector area. Then, the neutron spectrum at the sample position is obtained. The intensity of neutrons with energy of hundreds of MeV is approximately 1E8 neutron/cm~2/s, which is useful for experiments. The displacement production rate and gas productions are calculated for common materials such as tungsten, tantalum and SS316. The results indicate that the experiment can provide irradiation dose rate ranges from 1E-5 to 1E-4 dpa per operating year. The residual radioactivity is also calculated for regular maintenance work. These results give the basic reference for the experimental design.
机译:中国散裂中子源(CSNS)将在其第一个目标站容纳20条中子束线。这些束线用于不同的目的,束线11设计为分析退化的模型和损坏机制,例如航空电子系统的电子组件和设备中的单事件效应。本文对基于蒙特卡罗模拟方法的高能中子束线11快门辐照实验方案进行了初步探讨。中子源项是通过使用包括目标-减速器-反射器面积的模型计算散射到束线11中的中子来生成的。然后,获得样品位置处的中子光谱。能量为数百MeV的中子强度约为1E8中子/ cm〜2 / s,可用于实验。计算出了钨,钽和SS316等常见材料的置换生产率和产气量。结果表明,该实验可以提供每个操作年1E-5至1E-4 dpa的辐射剂量率。还计算出剩余放射性,以进行常规维护工作。这些结果为实验设计提供了基本的参考。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号