Static phase improvements in the LNE watt balance

This paper describes the mechanical and electrical modifications carried out on the LNE watt balance to reduce the noise level associated with thestatic phase. The mechanical improvements concern the home-made balance beam using flexure hinges as pivots of the forcecomparator. The electrical improvements involve the source used to servo-control the equilibrium position of the beam during thestatic phase. All these modifications have led to a significant improvement of the repeatability and reproducibility of the results ofstatic phase measurements.

Source: Review of Scientific Instruments - October 11, 2016 Category: Physics Authors: P. Pinot, P. Espel, Y. Liu, M. Thomas, D. Ziane, M.-A. Palacios-Restrepo and F. Piquemal Source Type: research