Author/Authors :
Lund، نويسنده , , S.M. and Barnard، نويسنده , , J.J. and Craig، نويسنده , , G.D and Friedman، نويسنده , , A. and Grote، نويسنده , , D.P. and Hopkins، نويسنده , , H.S. and Sangster، نويسنده , , T.C. and Sharp، نويسنده , , W.M and Eylon، نويسنده , , S. and Fessenden، نويسنده , , T.J. and Henestroza، نويسنده , , E. and Yu، نويسنده , , S. and Haber، نويسنده , , I.، نويسنده ,
Abstract :
We present intense-beam simulations with the WARP code that are being carried out in support of the Heavy-Ion Fusion experimental programs at Lawrence Livermore National Laboratory (LLNL) and Lawrence Berkeley National Laboratory (LBNL). The WARP code is an electrostatic particle-in-cell code with an extensive hierarchy of simulation capabilities. Two experiments are analyzed. First, simulations are presented on an 80 keV, 2 mA K+ bent transport channel at LLNL that employs an alternating-gradient lattice of magnetic quadrupoles for beam focusing and electric dipoles for beam bending. Issues on dispersion-induced changes in beam quality on the transition from straight- to bent-lattice sections are explored. The second experiment analyzed is a 2 MeV, 800 mA, driver-scale injector and matching section at LBNL that is based on a K+ source and an alternating-gradient lattice of electrostatic quadrupoles biased to accelerate, focus, and match the beam. Issues on beam quality, space-charge waves, and beam hollowing are explored.
