“…In computational electromagnetics, there are generally three kinds of uncertainties: those on the source terms, those on the material behavior and those on the dimensions of the apparatus under study. In [3,4,5,6,7,8,9], some methods using polynomial chaos expansions were proposed to quantify the effect of uncertainties on the behavior laws on the outputs of the model. For problems with random domains (the dimensions are uncertain), discontinuities can appear on the field distribution in the "random dimension"…”