Systematics effects of the Mexican cesium atomic fountain CENAM-CsF1

The configuration of the cesium atomic fountain, CENAM-CsF
₁
at the Centro Nacional de Metrología (CENAM) in Mexico, along with a preliminary evaluation procedure of the systematics frequency shifts and their uncertainties are presented. Not only do we consider the main contributions of frequency shifts such as Second-order Zeeman (C-Field), collisions, blackbody radiation (BBR), gravity potential, light shifts, cavity pulling, and so forth, but also, we present a novel model to fit the velocity distribution of the cooled atoms.