[1206.0028] Design and characteristics of a WEP test in a sounding-rocket payload

Authors: Robert D. Reasenberg, Biju R. Patla, James D. Phillips, Rajesh Thapa

Date: 31 May 2012

Abstract: We describe SR-POEM, a Galilean test of the weak equivalence principle that is to be conducted during the free fall portion of the flight of a sounding rocket payload. This test of a single pair of substances will have a measurement uncertainty of {\sigma}({\eta}) < 2 10ˆ17 after averaging the results of eight separate drops, each of 120 s duration. The entire payload is inverted between successive drops to cancel potential sources of systematic error. The weak equivalence principle measurement is made with a set of four of the SAO laser gauges, which have achieved an Allan deviation of 0.04 pm for an averaging time of 30 s. We discuss aspects of the current design with an emphasis on those that bear on the accuracy of the determination of {\eta}. The discovery of a violation ({\eta} \neq 0) would have profound implications for physics, astrophysics and cosmology.

abs pdf

Jun 04, 2012

1206.0028 (/preprints)
2012-06-04, 02:11 [edit]


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