MiniGRAIL, A 65 cm spherical antenna | Zendy

A. de Waard | Zendy

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MiniGRAIL, A 65 cm spherical antenna

Author(s) -

A. de Waard

Publication year - 2000

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1291867

Subject(s) - ligo , physics , astronomical interferometer , gravitational wave , neutron star , sensitivity (control systems) , bandwidth (computing) , galaxy , rotational symmetry , gravitation , interferometry , astrophysics , optics , astronomy , telecommunications , computer science , mechanics , electronic engineering , engineering

We intend to build a 65 cm diameter spherical, cryogenic gravitational wave antenna made of the CuAl(6%) alloy with a mass of 1168 Kg, a resonance frequency of 3.7kHz and a bandwidth around 300 Hz. The quantum-limited strain sensitivity δL/L would be 2.2x10-21 at 10 mK. We believe that a sensitivity around 5x10-20 could be reached within the duration of th e project, which is (at that frequency) comparable to that of the large interferometers LIGO and VIRGO presently being built. The sources we are aiming at are for instance non-axisymmetric dynamical instabilities of rotating neutron stars within our galaxy , where 108 neutron stars are expected to exist.

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