TE/TM alternating direction scheme for wake field calculation in 3D

被引：0

作者：

Zagorodnov, I ^{[1
]}

Weiland, T ^{[1
]}

机构：

[1] Tech Univ Darmstadt, TEMF, D-64289 Darmstadt, Germany

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 558卷 / 01期

关键词：

Maxwell's equations; FDTD; ADI; finite integration; conformal; wake field;

D O I：

10.1016/j.nima.2005.11.019

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In the future, accelerators with very short bunches will be used. It demands developing new numerical approaches for long-time calculation of electromagnetic fields in the vicinity of relativistic bunches. The conventional FDTD scheme, used in MAFIA, ABCI and other wake and PIC codes, suffers from numerical grid dispersion and staircase approximation problem. As an effective cure of the dispersion problem, a numerical scheme without dispersion in longitudinal direction can be used as it was shown by Novokhatski et al. [Transition dynamics of the wake fields of ultrashort bunches, TESLA Report 2000-03, DESY, 2000] and Zagorodnov et al. [J. Comput. Phys. 191 (2003) 525]. In this paper, a new economical conservative scheme for short-range wake field calculation in 3D is presented. As numerical examples show, the new scheme is much more accurate on long-time scale than the conventional FDTD approach. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：95 / 99

页数：5

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