Gravitation Physics at BGPL
P. E. Boynton, R. M. Bonicalzi, A. M. Kalet, A. M. Kleczewski, J. K., Lingwood, K. J. McKenney, M. W. Moore, J. H. Steffen (University of, Washington, Seattle) E. C. Berg, W. D. Cross, R. D. Newman (University of, California
TL;DR
This paper reports progress on gravitational physics experiments using cryogenic torsion pendula at BGPL, focusing on testing the inverse square law and weak equivalence principle with high sensitivity in a low-vibration environment.
Contribution
It presents ongoing experimental efforts to detect inverse-square-law violations at very small strengths using advanced torsion pendula at BGPL.
Findings
Search for inverse-square-law violation down to 10^{-5} of gravity
Utilization of low-vibration environment for high-precision measurements
Progress in gravitational physics experiments with cryogenic torsion pendula
Abstract
We report progress on a program of gravitational physics experiments using cryogenic torsion pendula undergoing large-amplitude torsion oscillation. This program includes tests of the gravitational inverse square law and of the weak equivalence principle. Here we describe our ongoing search for inverse-square-law violation at a strength down to of standard gravity. The low-vibration environment provided by the Battelle Gravitation Physics Laboratory (BGPL) is uniquely suited to this study.
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