Coherent instabilities of ILC damping rings
نویسندگان
چکیده
1 Parameters The paper presents the first attempt to estimates the ILC damping ring impedance and compare thresholds of the classical instabilities for several designs initially proposed for the DR. The work was carried out in the spring of 2006. Since then the choice of the DR is narrowed. Nevertheless, the analysis described below may be useful for the next iterations of the beam stability. We use parameters for the damping rings vacuum chamber from A. Wolsky's paper [1]. They are summarized in the following Table I1 where τ l,y are the SR longitudinal and vertical damping times, respectively.
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