Speaker
Description
Muon colliders promise an efficient path to a multi-TeV energy collider facility. The final stage of the acceleration chain is planned to be a series of four rapid-cycling synchrotrons (RCS), in which the RF systems are divided into several sections and shared by the two counter-rotating muon bunches. The accelerator requirements are driven by the need to preserve the muon lifetime by taking advantage of time dilation. Therefore, maintaining a high voltage throughout the acceleration is essential. The high bunch intensity of up to 2.7 x 10¹² and the 1.3 GHz TESLA cavity’s small aperture will result in induced voltages in the MV range. This contribution presents the calculation of the beam's impact on the cavity voltage in the transient regime, with the induced voltage of the counter-rotating bunch also affecting the cavity voltage. The impact of this effect depends on the difference in the arrival times of the bunches at each station. Finally, different measures to control the deviation of the cavity voltage from its setpoint are studied. Changing the phase or amplitude of the cavity voltage can significantly affect both beam loss and stability.
Funding Agency
This work has been sponsored by the Wolfgang Gentner Programme of the German Federal Ministry of Education and Research (grant no. 13E18CHA) and is endorsed by the IMCC.
| Region represented | Europe |
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| Paper preparation format | LaTeX |
