Prospects for terrestrial equivalence principle tests with a cryogenic torsion pendulum

Details Prospects for terrestrial equivalence principle tests with a cryogenic torsion pendulum Prospects for terrestrial equivalence principle tests with a cryogenic torsion pendulum

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cqgra..18.2407n&link_type=abstract

Classical and Quantum Gravity, Volume 18, Issue 13, pp. 2407-2415 (2001).

Physics

9

Scientific paper

A torsion pendulum may be used to measure effective differential accelerations of test masses in the field of sources on distance scales below those accessible in a space experiment such as STEP. Operation of a torsion pendulum at low temperature (2 K) offers many benefits, notably: low thermal noise, high fibre stability, highly effective superconducting magnetic shielding and excellent temperature control. With such an instrument it should be possible to detect differential accelerations as small as 10-14 cm s-2, or fractional differential accelerations in the field of the Earth as small as η = 10-14. This paper discusses the sources of noise and systematic error that limit a cryogenic torsion pendulum in such measurements.

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