Numerical analysis of the performance of a resonant gravity-wave detector

Bu Xin Xu, Louisiana State University
W. O. Hamilton, Louisiana State University
W. W. Johnson, Louisiana State University
N. D. Solomonson, Louisiana State University
O. D. Aguiar, Louisiana State University

Abstract

This paper presents the results of a detailed numerical calculation of the performance of a resonant gravitational radiation detector which uses an inductive transducer and a superconducting quantum interference device amplifier. We demonstrate the correctness of the calculations by comparing them to the present performance of the Louisiana State University antenna. We show that a standard cryogenic resonant bar detector operating at 4 K is capable of a noise temperature of less than 0.75 mK, corresponding to an rms gravitational-wave amplitude of 1.9×10-19. © 1989 The American Physical Society.