  The NO{\nu}A Experiment will construct a detector optimized for electron
neutrino detection in the existing Neutrino at Main Injector (NuMI) beamline.
This beamline is capable of operating at 400 kW of primary beam power and the
upgrade will allow up to 700 kW. The cavities will operate at 53 MHz and three
of them will be installed in the Recycler beamline. Thermal stability of the
cavities is crucial since this affects the tuning. Results of finite element
thermal and structural analysis involving the copper RF cavity will be
presented.
