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Calculation of Impedance from Multibunch Synchronous Phases: Theory and Experimental Results
[report]
1998
unpublished
A novel beam-based method for measuring the longitudinal impedance spectrum is demonstrated using experimental data from the PEP-II High Energy Ring (HER). The method uses a digital longitudinal feedback system from which the charge and synchronous phase are measured for every bucket. Calculation of the transfer function from fill shape to synchronous phase yields the impedance seen by the beam at revolution harmonics. The experimentallyderived longitudinal impedance function and lab
doi:10.2172/9945
fatcat:sjdnwk3txfdmdbyaqptusltisi