Study On Thermal Analysis Of Low Temperature Calibration Device Of Hall Probe

The cryogenic calibration system of Hall probe is an important tool for highprecision magnetic measurement at low temperature. In the calibration system,temperature distribution and thermal deformation of the conduction components havea direct impact on the Hall probe calibration. In this paper, finite element method wasused to carry out the steady thermal analysis and cold deformation analysis. Jouleeffect of the Hall sensor at low temperature was also simulated, temperaturedifferences from the Joule effect were then figured out. Finally, we simulated thetemperature of cryogenic permanent magnet measurement system,and carried out thedifference between the actual temperature of Hall probe and the temperature oftemperature probe.When the temperature of the secondary cold head is4.42K, thetemperature simulation result of the Hall probe is6.75K, the simulation result of Hallprobe axial deformation is1.11mm. Experimental result of the temperature of hallprobe is6.44K. The simulation result is reliable and we can provide the basis for Hallprobe temperature correction.In this paper the first chapter briefly introduces the development history ofsynchrotron radiation light source,the development situation of cryogenic magneticfield measurement technology abroad, the related principle of Hall effect.The secondchapter gives a brief introduction of ANSYS finite element analysis software, anddiscussed the basic principle and method of thermal analysis.In the fourth chapter, wecarried out the thermal analysis of the cryogenic calibration system of Hall probe.Inthe Fifth chapter we conclude the whole article, and put forward the problem forfurther study.At last,we scopes future works.