Calculations of collimator wakefield phenomena

The thesis will describe the state of the art in calculations, simulations and measurement of wakefields in collimators. I will present a wide ranging summary of work completed over t he last five years. I will introduce improved methods for the analytical calculation of wakefields and I will apply...

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Bibliographic Details
Main Author: Smith, Jonathan D. A.
Published: Lancaster University 2011
Subjects:
Online Access:http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.651306
Description
Summary:The thesis will describe the state of the art in calculations, simulations and measurement of wakefields in collimators. I will present a wide ranging summary of work completed over t he last five years. I will introduce improved methods for the analytical calculation of wakefields and I will apply these to calculate higher order corrections to taper profiles in the inductive regime. I will outline a prescription for calculating wakefield kick factors, including estimates of errors normally unavailable with the FDTD method, and will demonstrate this using the GdfidL software. I will perform an optimisation of the electromagnetic properties of a complete collimator and its structure. I will compare these calculations with experimental data taken at End Station A at SLAC, and discuss the limitations of these and non beam-based experimental measurements