NDLI: Influence of the photoinjector exit aperture on the wakefield driven by an intense electron beam pulse: a theoretical approach

Content Provider	IEEE Xplore Digital Library
Author	Dolique, J.-M.
Copyright Year	1995
Description	Author affiliation: Univ. Joseph Fourier, Grenoble, France (Dolique, J.-M.)
Abstract	The wakefield generated in the cylindrical cavity of an RF photoinjector, by the strongly accelerated electron beam, has been analytically calculated under the assumption that the perturbation of the field map by the exit hole is negligible as long as the ratio: exit hole radius/cavity radius is lower than approximately 1/3. Shown experimentally in the different context of a long accelerating structure formed by a sequence of bared pill-box cavities, this often quoted result must be checked for the wakefield map excited in a photoinjector cavity. Further, in the latter case, the empirical rule in question can be broken more easily because, due to the causality, the cavity radius to be considered is not the physical radius but that of the part of the anode wall around the exit hole reached by the beam electromagnetic influence. We present an analytical treatment of the wakefield driven in a photoinjector by the accelerated electron beam which takes this hole effect into account, whatever the hole radius may be.
Starting Page	3248
Ending Page	3250
File Size	268697
Page Count	3
File Format	PDF
ISBN	0780329341
DOI	10.1109/PAC.1995.505844
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Apertures Electron beams Acceleration Anodes Laser beams Electromagnetic fields Space charge Particle beams Cathodes Radio frequency
Content Type	Text
Resource Type	Article

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