Transport simulation and energy spectra analysis about neutrons in TMR system in spallation neutron source

ZHOU Shuo HU Yating MA Xiaolan LI Hua

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Transport simulation and energy spectra analysis about neutrons in TMR system in spallation neutron source

更新时间：2021-03-05

- Transport simulation and energy spectra analysis about neutrons in TMR system in spallation neutron source
- NUCLEAR TECHNIQUES Vol. 34, Issue 12, (2011)
- 作者机构：
  
  暨南大学物理系
- 作者简介：
- 基金信息：
- DOI：
  CLC： O571.53
- Published：01 December 2011
- 稿件说明：
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[1]周硕,胡雅婷,马晓兰,李华.散裂中子源TMR系统内中子输运模拟及其能谱分析[J].核技术,2011,34(12):921-925.

ZHOU Shuo HU Yating MA Xiaolan LI Hua. Transport simulation and energy spectra analysis about neutrons in TMR system in spallation neutron source[J]. Nuclear techniques, 2011, 34(12): 921-925.
[1]周硕,胡雅婷,马晓兰,李华.散裂中子源TMR系统内中子输运模拟及其能谱分析[J].核技术,2011,34(12):921-925. DOI：

ZHOU Shuo HU Yating MA Xiaolan LI Hua. Transport simulation and energy spectra analysis about neutrons in TMR system in spallation neutron source[J]. Nuclear techniques, 2011, 34(12): 921-925. DOI：

摘要

为了解中国散裂中子源（CSNS）及其输出中子的能量分布等相关信息

利用MCNP程序模拟中子的慢化和输运过程

计算不同情形下的输出中子能谱。结果表明

在退耦合窄化氢（DPHM）中的窄化片向下束流方向（downstream）偏移5 mm时能有效窄化输出的能谱峰

并最大限度减少退耦合氢慢化器的输出中子对退耦合水慢化器输出中子的干扰。

Abstract

Neutron moderation and neutron transport in target-moderator-reflector(TMR) system of China spallation neutron source(CSNS) were simulated by using MCNP code.Neutron energy spectra and angular distributions were calculated using different sets of parameters.The results show that placing the poison in the center of decoupled poisoned hydrogen moderator(DPHM) with a deviation of 5 mm to the downstream window can optimize the design.

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