Initial Value Problem Formulation of Time Domain BEM and Application to Wake Field Analysis

Prof. Hideki Kawaguchi, Muroran Institute of Technology, Muroran, Japan

18 Jan 2010, 16:00; Location: S2|17-103

Although Boundary Element Method (BEM) requires us heavy calculation cost and large required memory, it givs us some remarkable advantages due to property of surface mesh such as in open bounary problems, moving boundary problems, optimized shape design problems, inverse problems, coupling problems with moving charged particles, and so on.

This means that BEM should be applied for specialized problems considering its advantages. Especially Time Domain BEM (TDBEM) has also special advantages of grid dispersion free property, treatment of electron bunch with curved trajectory, etc. in wake field analysis. Indeed, it was shown that the TDBEM can be applied to wake field analysis for very long accelerator structure and curved trajectory beam to use moving window technique. However these TDBEM wake field analysis still have practical problems such as computation time. In this talk, a new formulation of the TDBEM, an initial value problem formulation is presented. To use the initial value problem formulation of the TDBEM, a new type of moving window scheme, which can be applied to curved trajectory or electron motion with smaller velocity than the speed of light, will be introduced.

Category: CE Seminar


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