Fig. 3
af(x) is the dose-profile fitting function for each pulse beam, and the position of the center axis of the field is the origin of coordinates. bg(x) is comprised of Dirac delta function δ(x). The figure shows the graph of g(x) when n = 5 and ton = 0. c Convolution of f(x) with g(x), which reveals the basis of the dose-profile fitting by superimposing the dose at different points to obtain the final film dose profile