Articles techniques et présentations

The ITER-ECE transmission lines consist of smooth-wall circular waveguides, including miter bends and other components. The performance of the TL is crucial to ensuring that the requirements for the diagnostic to measure the plasma parameters are met. COMSOL Multiphysics® has a finite element method with a built-in Eigenmode matrix solver. The accuracy of COMSOL solutions depends on the size of the free triangular mesh size with respect to wavelength at the frequency being solved for. In this paper, we launched TE01 mode, which is a low attenuated mode in a smooth wall circular waveguide, and validate the transmission of TE01 results with the analytical results. The details of the model, numerical approach, and analysis results will be presented in this paper.