The concept of coupling impedance in the self-consistent plasma wake field excitation

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• 作者：R. Fedele^a ; ^b ; ; T. Akhter^a ; ^b ; S. De Nicola^a ; ^b ; ^c ; M. Migliorati^d ; ^e ; A. Marocchino^d ; ^e ; F. Massimo^d ; ^e ; L. Palumbo^d ; ^e
• 关键词：Coupling impedance ; Plasma wake field excitations ; Vlasov&ndash ; Maxell system of equations ; Stability analysis
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：1 September 2016
• 年：2016
• 卷：829
• 期：Complete
• 页码：397-402
• 全文大小：515 K

文摘

Within the framework of the Vlasov–Maxwell system of equations, we describe the self-consistent interaction of a relativistic charged-particle beam with the surroundings while propagating through a plasma-based acceleration device. This is done in terms of the concept of coupling (longitudinal) impedance in full analogy with the conventional accelerators. It is shown that also here the coupling impedance is a very useful tool for the Nyquist-type stability analysis. Examples of specific physical situations are finally illustrated.