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Persistent URL http://purl.org/net/epubs/work/43977
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Record Id 43977
Title Transverse Resistive Wall Wakefields of the ILC Positron Undulator Beam Tube and their Effects on an Orbit Dependant Emittance Growth1
Abstract Previous work has calculated the longitudinal wakefields for the different bunch distributions, ILC parameters, vessel materials and DC, AC and anomalous skin effect impedances [1]. From these longitudinal wakes the transverse wakes can be simply be calculated via integration. The peak transverse kick is found to be 0.27 eV μm-1 m-1 for a 5.85 mm diameter copper vessel at 77 K. This has been used along with particle tracking in MAD and a simple Single Value Decomposition based correction algorithm to estimate an emittance growth of the electron beam caused by the undulator line. It was found that the emittance increase is due to the optics of the line, with the resistive wall wakefields being a negligible effect.
Organisation CCLRC , ASTeC-AP , ASTeC-MaRS , CI
Keywords Physics
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report CI Preprints 07-02. 2007. Cockcroft-07-02.pdf 2007