• N.P. Sobenin, M. Gusarova, V.I. Kaminsky, S.V. Kutsaev, M.V. Lalayan
  MEPhI, Moscow
• L.V. Kravchuk, S.G. Tarasov
  RAS/INR, Moscow

A new computer code for 3D simulation of multipacting phenomenon in axisymmetric and non-axisymmetric rf structures is presented. The goal of the simulation is to determine resonant electron trajectories and electron multiplication in rf structure. Both SW and TW structures of normal- and superconductivity have been studied. Simulation results are compared with theoretical calculations and experimental measurements.