G2DEM: A parallel two-dimensional electromagnetic PIC code for the study of electron-cyclotron instabilities of relativistic electron beams in cylindrical cavities
Description
Abstract A two-dimensional PIC code aimed at the investigation of electron-cyclotron beam instabilities in gyrotrons and their effects on the beam quality is presented. The code is based on recently developed techniques for handling charge conservation and open boundaries and uses all electromagnetic field which is decomposed in its transverse magnetic (TM) and electric (TE) components. The code has been implemented on the massively parallel computer CRAY T3D, but can also be run on a single processor... Title of program: G2DEM Catalogue Id: ADGD_v1_0 Nature of problem G2DEM (Gyrotron 2 Dimensions ElectroMagnetic) solves Maxwell's equations and the relativistic equations of motion for an annular electron beam in an axisymmetric cylindrical cavity (r,z) open at both ends. This program is used to determine the effects of electron-cyclotron instabilities (electrostatic and electromagnetic) on the velocity distribution of the beam. This is of practical interest, because the best gyrotron efficiency is obtained with monochromatic beams and any beam degradation, lea ... Versions of this program held in the CPC repository in Mendeley Data ADGD_v1_0; G2DEM; 10.1016/S0010-4655(97)00057-X This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)