Author/Authors :
Haber، نويسنده , , Anatoly I. and Feldman، نويسنده , , D. and Fiorito، نويسنده , , R. and Friedman، نويسنده , , A. and Grote، نويسنده , , D.P. and Kishek، نويسنده , , R.A. and Quinn، نويسنده , , Andreas B. and Reiser، نويسنده , , M. and Rodgers، نويسنده , , J. and O’Shea، نويسنده , , P.G. and Stratakis، نويسنده , , D. and Tian، نويسنده , , K. and Vay، نويسنده , , J.-L. and Walter، نويسنده , , M.، نويسنده ,
Abstract :
Control of the time-dependent characteristics of the beam pulse, beginning when it is born from the source, is important for obtaining adequate beam intensity on a target. Recent experimental measurements combined with the new mesh-refinement capability in WARP have improved the understanding of time-dependent beam characteristics beginning at the source, as well as the predictive ability of the simulation codes. The University of Maryland Electron Ring (UMER), because of its ease of operation and flexible diagnostics has proved particularly useful for benchmarking WARP by comparing simulation to measurement.
urce of significant agreement has been in the ability of three-dimensional WARP simulations to predict the onset of virtual cathode oscillations in the vicinity of the cathode grid in the UMER gun, and the subsequent measurement of the predicted oscillations.
