LABORATORY SEARCHES FOR PREFERRED FRAME EFFECTS: ONGOING WORK AND RESULTS AT BIRMINGHAM

摘要

In this article we give an overview of our torsion-strip balance facility including the setting up and commissioning of the apparatus. We present some major technical upgrades which make it sufficiently sensitive to explore a number of suggested Lorentz violating interactions. We also give details of an experiment which performs continuous measurements of the Newtonian constant making it sensitive to temporal signatures in G over sidereal time scales and providing upper-limits at the ppm level.