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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Optimization of immunity to helium tidal influences for the STEP experiment test masses

Lockerbie, N.A. and Xu, X. and Veryaskin, A.V. and Hosey, M.A. (1994) Optimization of immunity to helium tidal influences for the STEP experiment test masses. Classical and Quantum Gravity, 11 (6). pp. 1575-1590. ISSN 0264-9381

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Abstract

This paper describes an optimization strategy for the design of the three pairs of test masses in the STEP (satellite test of the equivalence principle) experiment. Using these designs, the allowable helium tidal amplitude is calculated for a STEP accelerometer sensitivity of , based on a worst case distribution of the liquid helium in the satellite's dewar. It is found that the hybrid belted/straight-cylinder geometry can be dimensioned such that the quadrupole moment and differential hexadecapole moment are identically zero. The resulting test mass designs are technically feasible. Some practical problems relating to their manufacture are discussed.