Papers › A Vacuum-Compatible Cylindrical Inertial Rotation Sensor with Picoradian Sensitivity
A Vacuum-Compatible Cylindrical Inertial Rotation Sensor with Picoradian Sensitivity
M. P. Ross, J. van Dongen, Y. Huang, P. 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. H. Gundlach
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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.
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