Development of a superconducting angular accelerometer

Peter J. Shirron; Vol Moody; Ed Canavan

doi:10.1117/12.254141

14 October 1996 Development of a superconducting angular accelerometer

Peter J. Shirron, Vol Moody, Ed Canavan

Proceedings Volume 2814, Cryogenic Optical Systems and Instruments VII; (1996) https://doi.org/10.1117/12.254141
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A novel monolithic device is described which has the capability of resolving angular accelerations in a single axis to 10^-10 rad s^-2 Hz^-1/2. The device consists of a niobium proof mass attached to a housing via a torsional spring, and is operated at a temperature below 9.2 K so that the niobium is superconducting. Angular accelerations cause proportional angular displacements of the proof mass and, because of the Meissner effect in superconductors, changes in the inductance of superconducting coils located near the proof mass. Changes in inductance are sensed by a superconducting quantum interference device through the modulation of persistent currents. The angular accelerometer is being designed for use at frequencies below 1 Hz, so the resonant frequency of the proof mass is on the order of 10Hz. It is intended for use with the University of Maryland's superconducting gravity gradiometer to allow removal of angular and centrifugal acceleration-induced errors. Design parameters, assembly techniques and performance testing are discussed.

Citation Download Citation

Peter J. Shirron, Vol Moody, and Ed Canavan "Development of a superconducting angular accelerometer", Proc. SPIE 2814, Cryogenic Optical Systems and Instruments VII, (14 October 1996); https://doi.org/10.1117/12.254141

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