Stefanucci, C.Bandi, T.Merli, F.Pellaton, M.Affolderbach, C.Mileti, G.Skrivervik, A. K.2012-10-172012-10-172012-10-17201210.1063/1.4759023https://infoscience.epfl.ch/handle/20.500.14299/86187WOS:000311562500047The design, realization, and characterization of a compact magnetron-type microwave cavity operating with a TE011-like mode are presented. The resonator works at the rubidium hyperfine ground-state frequency (i.e., 6.835 GHz) by accommodating a glass cell of 25 mm diameter containing rubidium vapor. Its design analysis demonstrates the limitation of the loop-gap resonator lumped model when targeting such a large cell, thus numerical optimization was done to obtain the required performances. Microwave characterization of the realized prototype confirmed the expected working behavior. Double-resonance and Zeeman spectroscopy performed with this cavity indicated an excellent microwave magnetic field homogeneity: the performance validation of the cavity was done by achieving an excellent short-term clock stability as low as 2.4 x 10(-13) tau(-1/2). The achieved experimental results and the compact design make this resonator suitable for applications in portable atomic high-performance frequency standards for both terrestrial and space applications. c 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759023]text::journal::journal article::research article