Speaker
Description
Elettra 2.0 [1], is a diffraction-limited upgrade of the Elettra storage ring, where beam stability requires an accurate evaluation of the machine impedance. An initial impedance budget was previously derived from analytical models and simplified geometries [2]. As the design evolves, a refined assessment including realistic components and numerical simulations becomes necessary. In this work, we present an updated impedance budget including key vacuum chamber elements such as flanges, beam position monitors (BPMs), the scraper system, and resistive wall (RW) effects. Numerical simulations are performed using CST Studio Suite [3] and the WAKIS solver [4], and are benchmarked against semi-analytical models (IW2D) [5] and theoretical expressions. Particular attention is given to the scraper system, identified as a relevant localized impedance source, in agreement with previous observations in Elettra [6]. Good agreement is found among the different approaches, providing increased confidence in the updated impedance model. These results support ongoing beam dynamics studies for Elettra 2.0.
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