Abstract:
In order to investigate the behavior of gravitational signals while travelling through a medium an experiment was designed, aimed at measuring the speed of these signals over short distances. The experiment contains 2 sapphire vibrating devices that emit a signal and one sapphire device that behave as a detector, which are suspended in vacuum and 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 has a quite high mechanical Q, the detection band is expected to be small, thus reducing the detection sensitivity. A new shape for the detecting device is presented in this work, yielding a detection band of several hundred Hertz. With the aid of a Finite Element Program the normal mode frequencies of the detector are determined assuming the detector as a spring-mass system. The results show that the detection is achievable then the best operational frequency is determined.
Reference:
3. FABRÍCIO JUNIOR, Carlos Alberto; SANCHEZ, Eduardo; FRAJUZA, Carlos; BORTOLI, Fabio Silva; MAGALHÃES, Nadja Simão; MARGARIDO, Gustavo Neves; SILVA, Davilson Mariano da. Modeling an experiment to measure the speed of gravity in short distances using vibration masses: frequency optimization. International Journal of Advanced Engineering Research and Science, v.8, n.1, p.6–11, Jan.-Feb., 2021.
Access to the article on the Journal website:
https://ijaers.com/detail/modeling-an-experiment-to-measure-the-speed-of-gravity-in-short-distances-using-vibrating-masses-frequency-optimization/
In order to investigate the behavior of gravitational signals while travelling through a medium an experiment was designed, aimed at measuring the speed of these signals over short distances. The experiment contains 2 sapphire vibrating devices that emit a signal and one sapphire device that behave as a detector, which are suspended in vacuum and 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 has a quite high mechanical Q, the detection band is expected to be small, thus reducing the detection sensitivity. A new shape for the detecting device is presented in this work, yielding a detection band of several hundred Hertz. With the aid of a Finite Element Program the normal mode frequencies of the detector are determined assuming the detector as a spring-mass system. The results show that the detection is achievable then the best operational frequency is determined.
Reference:
3. FABRÍCIO JUNIOR, Carlos Alberto; SANCHEZ, Eduardo; FRAJUZA, Carlos; BORTOLI, Fabio Silva; MAGALHÃES, Nadja Simão; MARGARIDO, Gustavo Neves; SILVA, Davilson Mariano da. Modeling an experiment to measure the speed of gravity in short distances using vibration masses: frequency optimization. International Journal of Advanced Engineering Research and Science, v.8, n.1, p.6–11, Jan.-Feb., 2021.
Access to the article on the Journal website:
https://ijaers.com/detail/modeling-an-experiment-to-measure-the-speed-of-gravity-in-short-distances-using-vibrating-masses-frequency-optimization/
