Abstract
A spherical gravitational wave (GW) detector has a heavy ball-shaped mass which vibrates when a GW passes through it. Such motion is monitored by transducers and the respective electronic signal is digitally analyzed. One of such detectors, SCHENBERG, will have resonant frequencies around 3.2 kHz with a bandwidth near 200 Hz. The frequencies of other resonant-mass detectors typically lay below 1 kHz, making the transducer development for this higher frequency detector somewhat more complex. In this work we present a series of finite element studies of a sphere coupled to resonant mushroom shaped resonators that will work as mechanical impedance matchers between the sphere and the transducer. We describe the search for a shape of the impedance matcher that might improve the performance of the detector. We find that the normal modes of the coupled system are not exactly degenerate, while theoretical calculations predict that they should be.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.