A Vacuum-compatible Cylindrical Inertial Rotation Sensor with Picoradian Sensitivity

Overview

Journal Rev Sci Instrum

Publisher American Institute of Physics

Specialties Biomedical Engineering
Biophysics

Date 2023 Sep 22

PMID 37737699

Authors

M P Ross

J van Dongen

Y Huang

H Zhou

Y Chowdhury

S K Apple

C M Mow-Lowry

A L Mitchell

N A Holland

B Lantz

E Bonilla

A Engl

A Pele

D Griffith

E Sanchez

E A Shaw

C Gettings

J Gundlach

Affiliations

Soon will be listed here.

Abstract

We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from a pair of 14 μm thick BeCu flexures. The angle between the proof-mass and support structure is measured with a pair of homodyne interferometers, which achieve a noise level of ∼5prad/Hz. The sensor is entirely made of vacuum compatible materials, and the center of mass can be adjusted remotely.