|Table of Contents|

[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]

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

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

2019 1
Research Field:
Electromagnetic Field and Microwave Technology
Publishing date:


Design and implementation of square Helmholtz coilfor uniform magnetic field generation
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
proton magnetometer square Helmholtz coils space utilization rate uniform magnetic field
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.


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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.
Last Update: 2019-03-20