HOM damping options for the Z-Pole operatingscenario of FCC-ee
S.G. Zadeh1, T. Flisgen2, R. Calaga3 and U. van Rienen1
Published in:
J. Phys. Conf. Ser., vol. 21350, no. 1, 012007, DOI: 10.1088/1742-6596/1350/1/012007 (2019).
Abstract:
The Z-pole option of FCC-ee is an Ampere class machine with a beam current of 1.39 A. Due to high HOM power and strong HOM damping requirements, the present baseline of FCC-ee considers a single-cell cavity at 400 MHz. In this paper, different HOM damping schemes are compared for the Z-pole operating scenario with the aim of lowering the parasitic longitudinal and transverse impedance. The HOM power for each damping scheme is also calculated.
1 University of Rostock, Rostock, Germany
2 Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, Berlin, Germany
3 CERN, Geneva, Switzerland
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