Comments on the Impedances of the SSC Shielded Bellows at Low Frequencies Due to the Truncation of the Wake Fields

摘要

The behavior of the longitudinal impedance of the SSC shielded bellow at low frequencies depends very much on the length of the wake field used in the Fourier transformation. We show analytically and numerically that, regardless of the difference, single-bunch effects are independent of the actual shape of the impedance when the length of the wake used is bigger than the bunch length. (ERA citation 11:056889)