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Space Charge Simulations of Photoemission Using the Differential Algebra-based Multiple-Level Fast Multipole Algorithm

Abstract

A grid-free algorithm based on the multiple level fast multipole algorithm and differential algebra is developed to calculate the electrostatic field of an ensemble of charged particles and its high order derivatives. The efficiency of the algorithm scales linearly with the number of particles for any arbitrary distribution. The algorithm is parallelized to further improve its efficiency. Simulation results on photo-emission process using this algorithm are presented.

H. Zhang, Z. Tao, C.-Y. Ruan, M. Berz, Advances in Imaging and Electron Physics 191 (2015) 56-66

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