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Description
The Future Circular Collider – electron–positron (FCC-ee) is a proposed high-luminosity collider to be installed in a about 91 km circumference underground tunnel. Among the various collective effects that may challenge its operation, the electron cloud phenomenon is expected to be particularly critical. The most severe conditions arise in the Z-pole operating mode, where the very small bunch spacing required to reach the target luminosity strongly favours the build-up of a dense electron population in the vacuum chamber. Such an electron cloud can severely degrade machine performance, for example by driving transverse beam instabilities. This paper presents a detailed investigation of e-cloud–driven beam instabilities in FCC-ee and evaluates the performance of several mitigation strategies. In particular, we assess, through dedicated simulations, the combined effects of different mitigation measures and identify the conditions under which instability suppression can be achieved.
| In which format do you inted to submit your paper? | LaTeX |
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