Speaker
Description
Asterix project a worldwide collaboration involving SLAC, CERN, INFN-LNF, KEK, and Tsinghua University, focused on the study and optimization of advanced X-band (11–12 GHz) accelerating structures. These structures, made of hard copper to ensure better high-gradient performance compared to soft copper, employ various geometries such as open-type cells and use alternative, braze-free joining techniques like TIG welding. The study is driven by the demand for high-gradient accelerating structures capable of sustaining gradients above 100 MV/m, which are essential for the next generation of linear accelerators used in research, industrial, and medical applications. An important part of this work is the numerical investigation of multipacting (MP) under different accelerating gradients and geometrical parameters of the quarter– cell model. Simulations performed using CST Studio Suite provided detailed information on how variations in the electromagnetic field amplitude and geometry influence the possible occurrence of MP, allowing for optimization of the structure design and ensuring reliable high-power operation.
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