Simulation and Experimentation of Flux Jump in SQUID Magnetometer Under the Geomagnetic Field

Simulation and Experimentation of Flux Jump in SQUID Magnetometer Under the Geomagnetic Field
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地磁场下SQUID磁力计磁通跳变仿真与实验

DOI:
10.1109/tasc.2020.3040200
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发表时间:
2021-04
影响因子:
1.8
通讯作者:
Xiaoming Xie
Xiaoming Xie
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhengwei Song;Yongliang Wang;Guofeng Zhang;Longqing Qiu;Jun Wu;Liangliang Rong;Shulin Zhang;Xiaoming Xie

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研究发现,超导量子干涉装置磁强计在地磁场环境下工作时,其输出偶尔会随着外加磁场的变化而出现微小的瞬时跳变,严重影响地磁场的测量精度,需要消除。建立了一个称为寄生超导环模型的磁通跳跃模型来解释这些小跳跃的原因,并建立了亥姆霍兹线圈来研究这种跳跃并在实验室中验证了该模型。实验结果表明,跳跃的位置和幅度与模型一致。相信该模型可以指导超导芯片在地球物理应用中的设计。
It has been found that when superconducting quantum interference device magnetometers operate in a geomagnetic field environment, its output will occasionally show small momentary jumps with the change of the external magnetic field, which seriously affects the measurement accuracy of the geomagnetic field and needs to be eliminated. A magnetic flux jump model called the parasitic superconducting ring model was built to explain the causes of these small jumps, and Helmholtz coils were set up to study the jump and verify this model in the laboratory. The experimental results showed that the position and amplitude of the jumps were consistent with the model. It is believed that this model can guide the design of superconducting chips in geophysical applications.
DOI: 10.1063/1.1655898
发表时间: 1968-10
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