Practical aspects for SQUID applications |
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| Institution: | 1. Institute of Information Optics, Zhejiang Normal University, Jinhua 321004, China;2. Joint Research Laboratory of Optics of Zhejiang Normal University and Zhejiang University, Hangzhou 310058, China;1. Petrobras SA, Rio de Janeiro, Brazil;2. Electrical Engineering Program and Nanotechnology Engineering Program, COPPE, Universidade, Federal do Rio de Janeiro, Brazil;1. School of Science, Chongqing University of Technology, Chongqing 400054, China;2. School of Electronics and Iot Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China;3. Chongqing Key Laboratory of Green Energy Materials Technology and Systems, Chongqing 400054, China |
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| Abstract: | Classical applications of superconducting quantum interference devices (SQUIDs), like biomagnetic measurements or precision voltage and current measurements have in almost all cases been carried out in a magnetically and electrically well shielded environment. Recently, the demonstration of highly sensitive HTS SQUIDs has increased the interest in SQUIDs for a broader range of applications like geophysical measurements or nondestructive materials evaluation. The operation of SQUIDs in an unshielded environment, however, leads in many cases to a significant reduction in their sensitivity due to numerous sources of interference and excess noise. The paper reviews recent work on aspects related to the operation of SQUIDs in unshielded environments. |
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