Beams Document 2167-v2

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Some Notes on Low Emittance Flat Beam Generation

Document #:
Beams-doc-2167-v2
Document type:
Note
Submitted by:
Michael J. Syphers
Updated by:
Michael J. Syphers
Document Created:
22 Feb 2006, 15:50
Contents Revised:
23 Feb 2006, 15:44
Metadata Revised:
23 Feb 2006, 15:44
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Beams-doc-2167-v1
22 Feb 2006, 15:56
Beams-doc-2167-v0
22 Feb 2006, 15:50
Abstract:
A method is described in which one generates a spiral pattern onto a photo-cathode and passes the resulting beam through a flat-beam transformation. While the vertical phase space area becomes very small, the horizontal phase space will result in a corresponding spiral pattern. Using a magnetic focusing channel with suitable non-linear fields, this spiral pattern can be ``unwound'' in order to group the particles into a smaller region of horizontal phase space.
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Notes and Changes:
Fixed typo in Table 1 (thanks, Ray!).
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