The high C-field Cs beam resonator at the Politecnico di Torino

Cesium atomic frequency standard is under development at the Politecnico di Torino. The whole resonator is conceived to reduce a number of systematic effects which are difficult to evaluate at the 10/sup -14/ accuracy level in traditional schemes. Some new solutions such as C-field value, cylindrical microwave cavity design and state selection method have been introduced in order to meet this goal. The overall design guidelines and the first results are reported and discussed.