PAC09 - List of Authors (Enders, J.)

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Enders, J.

Paper	Title	Page
FR5PFP090	Handling Overlapping Fields within the V-Code Beam Dynamics Simulation Tool	4513
	S. Franke, W. Ackermann, T. Weiland TEMF, TU Darmstadt, Darmstadt J. Enders, C. Heßler, Y. Poltoratska TU Darmstadt, Darmstadt
	Funding: This work was supported by DFG through SFB 634. Based on the moment approach a fast tracking code named V-Code has been implemented at TEMF. Instead of using the particle distribution itself this method applies a discrete set of moments of the particle distribution. The time evolution of each moment can be deduced from the Vlasov equation when all essential external forces are known. These forces are given by the Lorentz equation in combination with the distribution of electric and magnetic fields. For efficiency reasons the 3D fields in the vicinity of the bunch trajectory are reconstructed in V-Code from one-dimensional field components by means of proper multipole expansions for the individual beam line elements. The entire beam line is represented in the code as a successive alignment of separate independent beam line elements. The proximity of some beam forming elements may lead to overlapping fringe fields between consecutive elements. In order to simulate even such beam lines with the V-Code, its database of disjunctive beam line elements has to be enhanced to deal also with superposed fields. In this paper a summary of issues regarding the implementation complemented with simulation results will be provided.

Paper

Title

Page

FR5PFP090

Handling Overlapping Fields within the V-Code Beam Dynamics Simulation Tool

4513

S. Franke, W. Ackermann, T. Weiland
TEMF, TU Darmstadt, Darmstadt
J. Enders, C. Heßler, Y. Poltoratska
TU Darmstadt, Darmstadt

Funding: This work was supported by DFG through SFB 634.

Based on the moment approach a fast tracking code named V-Code has been implemented at TEMF. Instead of using the particle distribution itself this method applies a discrete set of moments of the particle distribution. The time evolution of each moment can be deduced from the Vlasov equation when all essential external forces are known. These forces are given by the Lorentz equation in combination with the distribution of electric and magnetic fields. For efficiency reasons the 3D fields in the vicinity of the bunch trajectory are reconstructed in V-Code from one-dimensional field components by means of proper multipole expansions for the individual beam line elements. The entire beam line is represented in the code as a successive alignment of separate independent beam line elements. The proximity of some beam forming elements may lead to overlapping fringe fields between consecutive elements. In order to simulate even such beam lines with the V-Code, its database of disjunctive beam line elements has to be enhanced to deal also with superposed fields. In this paper a summary of issues regarding the implementation complemented with simulation results will be provided.