Compact inertial sensors for measuring external disturbances of physics experiments.

ABSTRACT: Compact, high-precision inertial sensors are needed in the control schemes of many modern physics experiments to isolate them from disturbances caused by seismic motion. We present an inertial sensor whose mechanical oscillator fits on a one-inch diameter optic. The oscillators achieve a mechanical Quality factor of a fundamental oscillation mode of 600,000 and a resonance frequency of 50 Hz, giving them a suspension thermal noise floor lower than all commercially available inertial sensors. The motion of this fundamental mode is suitable to encode inertial motion into the sensor readout. The oscillator is combined with an optical resonator readout scheme that achieves a displacement noise of 100 fm/ Hz above 0.2 Hz. We validate the sensors' noise floor using a huddle test. Below 20 Hz, th

SUBMITTER: Carter JJ 

PROVIDER: S-EPMC11294580 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature