Test masses for the G-POEM test of the weak equivalence principle

Details Test masses for the G-POEM test of the weak equivalence principle Test masses for the G-POEM test of the weak equivalence principle

Nov 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011cqgra..28v5001r&link_type=abstract

Classical and Quantum Gravity, Volume 28, Issue 22, pp. 225001 (2011).

Physics

Scientific paper

We describe the design of the test masses that are used in the ‘ground-based principle of equivalence measurement’ test of the weak equivalence principle. The main features of the design are the incorporation of corner cubes and the use of mass removal and replacement to create pairs of test masses with different test substances. The corner cubes allow for the vertical separation of the test masses to be measured with picometer accuracy by SAO's unique tracking frequency laser gauge, while the mass removal and replacement operations are arranged so that the test masses incorporating different test substances have nominally identical gravitational properties.

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