Abstract
In order to investigate the behavior of gravitational signals while travelling through a medium anexperiment was designed, aimed at measuring the speed of these signals over short distances. Theexperiment contains 2 sapphire devices that behave as a detector, which are suspended in vacuumand cooled down to 4.2 K. The amplitude of the detecting device is measured by an ultralow, phase-noise microwave signal that uses resonance in the whispering gallery modes. Since sapphire hasa quite high mechanical Q, the detection band is expected to be small, thus reducing the detectionsensitivity. A new shape for the detecting device is presented in this work, yielding a detection bandof several hundred Hertz. With the aid of a Finite Element Program the normal mode frequencies ofthe detector are determined.
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