Calculation of the Coherent Synchrotron Radiation Impedance from a Wiggler.

Wu, J. ; Raubenheimer, T. ; Stupakov, G.

Technical Information Center Oak Ridge Tennessee

关键词: Synchrotron radiation;    Coherent radiation;    Impedance;    Wiggler magnets;    Calculation methods;   

RP-ID  :  DE2003812614

学科分类：工程和技术（综合）

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来源: National Technical Reports Library

【 摘 要 】

Most studies of Coherent Synchrotron Radiation (CSR) have only considered the radiation from independent dipole magnets. However, in the damping rings of future linear colliders, a large fraction of the radiation power will be emitted in damping wigglers. In this paper, the longitudinal wakefield and impedance due to CSR in a wiggler are derived in the limit of a large wiggler parameter K. After an appropriate scaling, the results can be expressed in terms of universal functions, which are independent of K. Analytical asymptotic results are obtained for the wakefield in the limit of large and small distances, and for the impedance in the limit of small and high frequencies.