Effects of an Asymmetric Chamber on the Beam Coupling Impedance

The wake function of an accelerator device appears to have a constant term if the geometry of the device is asymmetric or when the beam passes off axis in a symmetric geometry. Its contribution can be significant and has to be taken into account. In this paper a generalized definition of the impedance/wake is presented to take into account also this constant term. An example of a device where the constant term appears is analyzed. Moreover, the impact of a constant wake on the beam dynamics is discussed and illustrated by a HEADTAIL simulation.


Published in:
IPAC2012 Proceedings
Presented at:
IPAC2012, New Orleans, Louisiana, USA, May 20 - 25, 2012
Year:
2012
Keywords:
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 Record created 2012-10-03, last modified 2018-10-07

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