Design and simulation of a space-adjustable chopper

LI Xinxi WANG Yan HUANG Chaoqiang CHEN Bo

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Design and simulation of a space-adjustable chopper

更新时间：2021-03-05

- Design and simulation of a space-adjustable chopper
- NUCLEAR TECHNIQUES Vol. 33, Issue 3, (2010)
- 作者机构：
  
  中国工程物理研究院核物理与化学研究所
- 作者简介：
- 基金信息：
  
  中国工程物理研究院科学技术发展基金(2007B02002)资助
- DOI：
  CLC： O435.1
- Published：01 March 2010
- 稿件说明：
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[1]李新喜,王燕,黄朝强,陈波.盘间距可调斩波器设计及模拟[J].核技术,2010,33(03):192-196.

LI Xinxi WANG Yan HUANG Chaoqiang CHEN Bo. Design and simulation of a space-adjustable chopper[J]. Nuclear techniques, 2010, 33(3): 192-196.
[1]李新喜,王燕,黄朝强,陈波.盘间距可调斩波器设计及模拟[J].核技术,2010,33(03):192-196. DOI：

LI Xinxi WANG Yan HUANG Chaoqiang CHEN Bo. Design and simulation of a space-adjustable chopper[J]. Nuclear techniques, 2010, 33(3): 192-196. DOI：

摘要

不同实验样品精度需求对中子反射谱仪的分辨要求不同。为实现反射谱仪中的中子斩波器的斩波特性可调

斩波器设计采用四斩盘结构。设计原理主要是变换使用第三和第四斩盘

利用第三盘和第四盘与第二盘间距的不同

结合斩盘转速的调节

实现斩波特性可调。运用Mcstas程序软件模拟计算

获得客观物理条件下相关物理参数对脉冲注量率及脉冲水平发散度的影响曲线。计算结果可为水平散射几何中子反射谱仪中四盘斩波器的理论设计及相关物理参数的选择提供理论参考。

Abstract

Different samples need different resolution requirements of a neutron reflectometer.To achieve this

a space-adjustable neutron chopper with four disks was designed.The principle is adjusting the disk rotation frequency

according to the space difference from the 2# disk to the 3# and 4# disks.The new design was simulated with Mcstas codes

and the intensity and horizontal divergence as function of different physical parameters in given conditions were obtained.The results provide theoretical basis for designing the four-disk chopper of a horizontal geometry scattering neutron reflectometer.

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陈波

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LI Xinxi HUANG Chaoqiang WANG Yan CHEN Bo

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Related Institution

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus

University of Chinese Academy of Sciences

Shanghai Key Lab of Cryogenics & Superconducting RF Technology

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China) 2

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