NDLI: Space charge dominated envelope dynamics of asymmetric beams in RF photoinjectors

Content Provider	IEEE Xplore Digital Library
Author	Rosenzweig, J.B. Anderson, S. Serafini, L.
Copyright Year	1997
Description	Author affiliation: Dept. of Phys. & Astron., California Univ., Los Angeles, CA, USA (Rosenzweig, J.B.)
Abstract	While it has been proposed for several years that strongly asymmetric ((/spl sigma//sub x//spl Gt//spl sigma//sub y/)) beams can be employed in RF photoinjectors to obtain asymmetric emittances for linear collider applications, it is known that the emittances obtained directly from RF photocathode guns are not suitably small for this purpose. Because of this, simulation work has been performed in an attempt to apply the principle of emittance compensation to recover the small and asymmetric emittances after suitable focusing and acceleration of photoinjector beams. In order to guide this difficult three-dimensional analysis, we present an extension of a previous theoretical model of the emittance compensation process in axisymmetric photoinjectors. In the extended model, we first analyze the general quadrupolar oscillations in a symmetric accelerating system, and then proceed to examine a propagation mode under asymmetric focusing. This mode is a generalization of the previously analyzed axisymmetric invariant envelope, allowing an optimization of the compensation process. Design philosophies, including RF cavity considerations, are included in the discussion.
Starting Page	1965
Ending Page	1967
File Size	331664
Page Count	3
File Format	PDF
ISBN	078034376X
DOI	10.1109/PAC.1997.751076
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-05-16
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space charge Radio frequency Acceleration Particle beams Colliding beam devices Equations US Department of Energy Physics Astronomy Cathodes
Content Type	Text
Resource Type	Article

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