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Full Record Details
Persistent URL
http://purl.org/net/epubs/work/43973
Record Status
Checked
Record Id
43973
Title
Longitudinal resistive wall wakefields for the ILC positron undulator vessel
Contributors
DJ Scott (STFC)
Abstract
The DC, AC and anomalous skin effect longitudinal resistive wall wakefields of a round vessel have been computed for the ILC positron source undulator vessel. They have been calculated as a function of vessel radius for copper, aluminium, gold, iron and stainless steel materials and for the minimum, nominal and maximum ILC parameters. Gaussian, trapezium and 'Linac Coherent Light Source type' charge distributions have been modelled as examples. To assess the effects of cryogenic temperatures (the undulator is a superconducting helical device) the wakes have been calculated at 273K and 77K. For an undulator aperture of 5.6mm the increase in energy spread is 2% for gold at 273K with a Gaussian bunch profile and the minimum ILC parameters. The induced energy spread decreases with temperature and at 77K is 1.3% for gold and a Gaussian bunch.
Organisation
CCLRC
,
ASTeC
,
ASTeC-MaRS
,
CI
Keywords
Physics
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Report
CI Preprints
06-11. 2006.
Cockcroft-06-11.pdf
2006
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