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

J. Pleikies; O. Usenko; J. Flokstra

doi:10.1088/1742-6596/97/1/012254

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

J. Pleikies, O. Usenko, J. Flokstra

Faculty of Science and Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

2 Citations (Scopus)

1 Downloads (Pure)

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.

Original language	English
Title of host publication	8th European Conference on Applied Superconductivity
Publisher	Institute of Physics (IOP)
Number of pages	6
DOIs	https://doi.org/10.1088/1742-6596/97/1/012254
Publication status	Published - 16 Sept 2008
Event	8th European Conference on Applied Superconductivity, EUCAS 2007 - Brussels, Belgium Duration: 16 Sept 2007 → 20 Sept 2007 Conference number: 8

Publication series

Name
Publisher	IOP Publishing
Number	1
Volume	97
ISSN (Print)	1742-6588
ISSN (Electronic)	1742-6596

Conference

Conference	8th European Conference on Applied Superconductivity, EUCAS 2007
Abbreviated title	EUCAS
Country/Territory	Belgium
City	Brussels
Period	16/09/07 → 20/09/07

Keywords

METIS-254711
IR-61499

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10.1088/1742-6596/97/1/012254

Cite this

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title = "Numerical studies on dc-SQUID sensors with tightly coupled input coil",

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.",

keywords = "METIS-254711, IR-61499",

author = "J. Pleikies and O. Usenko and J. Flokstra",

note = "8th European Conference on Applied Superconductivity, EUCAS 2007, September 16-20, 2007, Brussels, Belgium ; 8th European Conference on Applied Superconductivity, EUCAS 2007, EUCAS ; Conference date: 16-09-2007 Through 20-09-2007",

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doi = "10.1088/1742-6596/97/1/012254",

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TY - GEN

T1 - Numerical studies on dc-SQUID sensors with tightly coupled input coil

AU - Pleikies, J.

AU - Usenko, O.

AU - Flokstra, J.

N1 - Conference code: 8

PY - 2008/9/16

Y1 - 2008/9/16

N2 - 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.

AB - 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.

KW - METIS-254711

KW - IR-61499

U2 - 10.1088/1742-6596/97/1/012254

DO - 10.1088/1742-6596/97/1/012254

M3 - Conference contribution

BT - 8th European Conference on Applied Superconductivity

PB - Institute of Physics (IOP)

T2 - 8th European Conference on Applied Superconductivity, EUCAS 2007

Y2 - 16 September 2007 through 20 September 2007

ER -

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

Abstract

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Keywords

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