Numerical simulation of cold conduction structure thermal performance in Hall probe cryogenic calibration system

ZHONG Yi; ZHANG Wei; ZHANG Jidong; WANG Shuhua; HE Yongzhou; ZHOU Qiaogen

doi:10.11889/j.0253-3219.2014.hjs.37.040101

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Numerical simulation of cold conduction structure thermal performance in Hall probe cryogenic calibration system

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- Numerical simulation of cold conduction structure thermal performance in Hall probe cryogenic calibration system
  封面论文
- NUCLEAR TECHNIQUES Vol. 37, Issue 4, Article number: 040101(2014)
- 作者机构：
  
  1. 中国科学院上海应用物理研究所嘉定园区,上海,201800
  2. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.040101
  CLC：
- Published：11 April 2014
- 稿件说明：
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ZHONG Yi, ZHANG Wei, ZHANG Jidong, et al. Numerical simulation of cold conduction structure thermal performance in Hall probe cryogenic calibration system[J]. Nuclear techniques, 2014, 37(4): 040101
DOI：

ZHONG Yi, ZHANG Wei, ZHANG Jidong, et al. Numerical simulation of cold conduction structure thermal performance in Hall probe cryogenic calibration system[J]. Nuclear techniques, 2014, 37(4): 040101 DOI： 10.11889/j.0253-3219.2014.hjs.37.040101.

摘要

霍尔探头低温标定装置是对霍尔探头进行低温下磁测性能标定的实验工具。标定装置内，探头的导冷结构的温度分布以及低温下的冷缩变形对霍尔探头标定的准确性有直接的影响。本文运用有限元模拟软件对霍尔探头低温标定装置的导冷结构进行了稳态热分析和冷缩变形分析；对低温下霍尔探头的焦耳效应进行了模拟，研究了霍尔探头的焦耳效应对其标定温度的影响。当制冷机二级冷头温度为4.42 K时，霍尔探头温度模拟结果为6.75 K，霍尔探头轴向冷缩量模拟结果为1.11 mm，实验结果霍尔探头温度6.55 K，模拟结果可靠。

Abstract

Background: The cryogenic calibration system of Hall probe is an important tool for high precision magnetic measurement at low temperature. Purpose: In order to setup the calibration system

simulations are performed to study the temperature distribution and thermal deformation of the conduction components which have a direct impact on the Hall probe calibration. Methods: Finite element method was used to the steady thermal analysis and cold deformation analysis. Joule effect of the Hall sensor at low temperature was simulated

and temperature differences from the Joule effect were then figured out. Results: When the temperature of the secondary cold head is 4.42 K

the simulated temperature of the Hall probe is 6.75 K

and the simulation result of Hall probe axial deformation is 1.11 mm. Experimental result of the temperature of hall probe is 6.44 K. Conclusion: The simulation result is reliable and can provide the basis for Hall probe temperature correction.Cited

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Related Author

ZHONG Yi

ZHANG Wei

ZHANG Jidong

WANG Shuhua

HE Yongzhou

ZHOU Qiaogen

HONG Shijin ZHOU Qiaogen WANG Hongfei

周巧根

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Shanghai Institute of Applied Physics, Chinese Academy of Science

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