Speaker
Description
The proposed muon collider complex is designed to accelerate high-intensity muon bunches to energies of several TeV. Due to the muon's short rest-frame lifetime, acceleration must be performed quickly. Thousands of superconducting cavities are required for the chain of rapid-cycling synchrotrons. Such large RF systems in this high-energy acceleration section pose the challenge of a very high fundamental-mode impedance. The resulting beam loading must be mitigated to preserve beam stability. The high-energy chain features a very short acceleration time of a few milliseconds and a high bunch population of $2.7\times10^{12}$. The feedback therefore faces particular challenges, as the RF system operates in a regime between those typically encountered in linear accelerators and synchrotrons. Additionally, both counter-rotating bunches are accelerated by the same RF system, causing the fields to interact in the cavities. This contribution presents the initial modelling of the cavity feedback system using the longitudinal beam dynamics code BLonD.
| Abstract Classification | Control Loop Modeling, Tuning and Optimization |
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