Numerical studies on dc-SQUID sensors with tightly coupled input coil


Pleikies, J. and Usenko, O. and Flokstra, J. (2008) Numerical studies on dc-SQUID sensors with tightly coupled input coil. Journal of physics: Conference series, 97 (1). 012254. ISSN 1742-6588

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Abstract:We investigated the behavior of two low-Tc direct current superconducting quantum interference device (dc-SQUID) sensors with integrated input coil. A model including the capacitance of the Josephson junctions, thermal noise of the integrated shunt- and damping-resistors as well as a frequency dependent inductance of the SQUID loop was determined and numerically simulated. The SQUID inductance is found to be mainly influenced by parasitic elements introduced by the integrated coils. The simulated characteristics of the examined SQUIDs show many features also seen in experiments, including a hysteresis due to the frequency dependent washer impedance. The measured sensitivity of one of the designs fits well to the simulated value.
Item Type:Article
Additional information:8th European Conference on Applied Superconductivity, EUCAS 2007, September 16-20, 2007, Brussels, Belgium
Copyright:© 2008 Institute of Physics
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