Coherent Electromagnetic Effects in High-Current Particle Accelerators: [Part] 3. Electromagnetic-Coupling Instabilities in a Coasting Beam Page: 4 of 18
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UCRL-9328
COHERENT ELECTROMAGNETIC EFFECTS IN HIGH-CURRENT
PARTICLE ACCELERATORS:
III. ELECTROMAGNETIC-COUPLING INSTABILITIES IN A COASTING BEAM
L. Jackson Laslett
Ames Laboratory, Iowa State University, Ames, Iowa, and
Midwestern Universities Research Association, Madison, Wisconsin
and
V. Kelvin Neil and Andrew M. Sessler t
Lawrence Radiation Laboratory
University of California
Berkeley, California
July 1960
I. INTRODUCTION
In the second article (Part II) of this series it was shown that a resonance
can occur between a beam of particles in an accelerator and the characteristic
electromagnetic modes of the vacuum tank. It is possible that this resonance could
lead to instabilitites in an intense relativistic coasting beam. This problem is
distinguished from the longitudinal instabilities investigated previously by a
number of authors 2, 3 because resonance can occur only with modes characterized
by short wavelengths in the azimuthal direction. Thus we shall be dealing with
perturbation frequencies that are very high harmonics of the particle circulation
frequency.
This work was done under the auspices of the U. S. Atomic Energy Commission.
tPermenent address: Ohio State University, Columbus, Ohio.-2-
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Laslett, L. J.; Neil, V. Kelvin & Sessler, A. M. Coherent Electromagnetic Effects in High-Current Particle Accelerators: [Part] 3. Electromagnetic-Coupling Instabilities in a Coasting Beam, article, August 4, 1960; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc900687/m1/4/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.