A Vacuum-Compatible Cylindrical Inertial Rotation Sensor with Picoradian Sensitivity
- Resource Type
- Working Paper
- Authors
- Ross, M. P.; van Dongen, J.; Huang, Y.; Zhou, P.; Chowdhury, Y.; Apple, S. K.; Mow-Lowry, C. M.; Mitchell, A. L.; Holland, N. A.; Lantz, B.; Bonilla, E.; Engl, A.; Pele, A.; Griffith, D.; Sanchez, E.; Shaw, E. A.; Gettings, C.; Gundlach, J. H.
- Source
- Subject
- Physics - Instrumentation and Detectors
- Language
We describe an inertial rotation sensor with a 30-cm cylindrical proof-mass suspended from a pair of 14-${\mu}$m 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 $\sim 5\ \text{prad}/\sqrt{\text{Hz}}$. The sensor is entirely made of vacuum compatible materials and the center of mass can be adjusted remotely.