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Characterization of the distributed cavity phase shift in LNE-SYRTE FO2 fountain

Jocelyne Guéna, P. Rosenbusch, Philippe Laurent, Michel Abgrall, Daniele Rovera, Giorgio Santarelli, Michael Edmund Tobar, Kurt Gibble, S. Bize, Andr  Clairon

Published Jun 1, 2010• 0 citations
Publisher

Abstract

We will report on the work performed with LNE-SYRTE fountain ensemble, focusing on characterization of the distributed cavity phase shift and on extensive comparison between the three fountains FO1, FO2 and FOM.
DOI
10.1109/cpem.2010.5543350

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This paper describes several recent improvements of the BNM-SYRTE fountain ensemble. A new method for controlling the cold collision shift with improved accuracy has been proposed and demonstrated. A thorough investigation of some cold collision properties of133Cs is presented, including the observation of molecular Feshbach resonances. Finally, a new microwave synthesis scheme based on a fully operational cryogenic oscillator is presented. With this, a fractional frequency instability below 2 times 10-14tau-frac12is obtained routinely