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PUBLICATIONS

Demonstration of a Meissner-Effect Transition Edge Sensor

Published

Author(s)

Solomon I. Woods, Stephen M. Carr, Timothy M. Jung, Adriaan C. Carter, Raju V. Datla

Abstract

We have built and tested a transition edge sensor which monitors temperature change by measuring magnetic flux expulsion from a superconducting element. Flux change is sensed by a dc SQUID coupled to the element using a flux transformer in a gradiometer arrangement. The operating temperature of the sensor can be varied by application of moderate magnetic fields to the superconducting core, using an integrated solenoid. With a Sn core at 3.58 K, the thermometer has demonstrated a noise level of 2.25 nK/rtHz. We estimate that such a sensor will allow femtowatt sensitivity of an absolute cryogenic radiometer presently under development.
Citation
Journal of Applied Physics
Volume
108
Pub Type
Journals

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Keywords

absolute cryogenic radiometer, paramagnetic salt thermometer, radiometry, SQUID readout, transition edge sensor

Citation

Woods, S. , Carr, S. , Jung, T. , Carter, A. and Datla, R. (2010), Demonstration of a Meissner-Effect Transition Edge Sensor, Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904199 (Accessed December 15, 2024)

Issues

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Created July 26, 2010, Updated February 19, 2017