[1] Wang Chao, Yuan Bin, Mao Junfa, Zhang Shuang, et al. Design and implementation of square Helmholtz coilfor uniform magnetic field generation [J]. Journal of Southeast University (English Edition), 2019, 35 (1): 16-21. [doi:10.3969/j.issn.1003-7985.2019.01.003]

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Design and implementation of square Helmholtz coilfor uniform magnetic field generation()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

35

Issue:

2019 1

Page:

16-21

Research Field:

Electromagnetic Field and Microwave Technology

Publishing date:

2019-03-30

Info

Title:

Design and implementation of square Helmholtz coilfor uniform magnetic field generation

Author(s):

Wang Chao¹;  Yuan Bin¹;  Mao Junfa¹;  Zhang Shuang²

¹School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
²College of Electronic Science and Engineering, Jilin University, Changchun 130021, China

Keywords:

proton magnetometer;  square Helmholtz coils;  space utilization rate;  uniform magnetic field

PACS:

TN80

DOI:

10.3969/j.issn.1003-7985.2019.01.003

Abstract:

In order to calibrate electrical instruments and generate a constant magnetic field, a novel design method for square Helmholtz coil is proposed. According to the superposition principle in electromagnetics, the theory of the square Helmholtz coil is established, and the design method is verified by Matlab calculation. Compared with conventional circular Helmholtz coil, the novel square one is with a larger uniform region. Simulation work is conducted in Maxwell, and the distribution of the magnetic field is obtained. The results demonstrate the validation of the applied calculation method of the proposed Helmholtz model. The space utilization rate η is used to make a comparison between the square and circular coils for the uniform region. The square Helmholtz coil is fabricated, the length of a single square coil is 1.5 m, and the amplitude of the magnetic field is controlled by the current. The GSM-19T proton magnetometer is used to measure the amplitude of the magnetic field generated by the square Helmholtz coil. Experimental results indicate that a wide-range variable uniform magnetic field from 0 to 120 μT is generated in the center of Helmholtz coils.

References:

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Memo

Memo:

Biographies: Wang Chao(1990—), male, Ph.D. candidate; Yuan Bin(corresponding author), male, doctor, professor, yuanbin@sjtu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No.61327803).
Citation: Wang Chao, Yuan Bin, Mao Junfa, et al.Design and implementation of square Helmholtz coil for uniform magnetic field generation[J].Journal of Southeast University(English Edition), 2019, 35(1):16-21.DOI:10.3969/j.issn.1003-7985.2019.01.003.

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