Wake Fields Excited in a Semi-Infinite Rectangular Dielectric Waveguide by a Train of Electron Bunches

Journal Article · Tue Dec 07 04:00:00 EST 2004 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1842611· OSTI ID:20655273

Marshall, Thomas C ^[1]; Onishchenko, Nikolay I; Sotnikov, Gennadij V ^[2]

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1. Columbia University, New York City 1002 (United States)
2. NSC 'Kharkov Institute of Physics and Technology', Academic Str. 1, Kharkov 61108 (Ukraine)

Wake fields set up in a dielectric having planar rectangular geometry by the passage of relativistic electron bunches (Vavilov-Cherenkov radiation) can be described by a summation of a 2D set of equally-spaced radial harmonics. This differs from the case of cylindrical geometry where the harmonics are not equally-spaced. We study peculiarities of excitation at the entrance boundary, namely the appearance of a 'quenching wave' and transition radiation. The former cancels Vavilov-Cherenkov radiation in the region between the entrance and a front moving with the group velocity, while the latter distorts the wake field. Exact expressions for transition and Vavilov-Cherenkov radiation are obtained, and the spatial profile of the field excited by an electron bunch of finite size is computed numerically. Wake field excitation by a train of equally-spaced short bunch is investigated.

• OSTI ID: 20655273
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 737; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
CHERENKOV RADIATION
CYLINDRICAL CONFIGURATION
DIELECTRIC MATERIALS
ELECTRON BEAMS
EXCITATION
HARMONICS
QUENCHING
RELATIVISTIC RANGE
TRANSITION RADIATION
VELOCITY
WAKEFIELD ACCELERATORS
WAVEGUIDES