Author:
HABER I.,BIENIOSEK F.M.,CELATA C.M.,FRIEDMAN A.,GROTE D.P.,HENESTROZA E.,VAY J.-L.,BERNAL S.,KISHEK R.A.,O'SHEA P.G.,REISER M.,HERRMANNSFELDT W.B.
Abstract
For the intense beams in heavy ion fusion accelerators, details
of the beam distribution as it emerges from the source region
can determine the beam behavior well downstream. This occurs
because collective space-charge modes excited as the beam is
born remain undamped for many focusing periods. Traditional
studies of the source region in particle beam systems have
emphasized the behavior of averaged beam characteristics, such
as total current, rms beam size, or emittance, rather than the
details of the full beam distribution function that are necessary
to predict the excitation of the collective modes. Simulations
of the beam in the source region and comparisons to experimental
measurements at Lawrence Berkeley National Laboratory and the
University of Maryland are presented to illustrate some of the
complexity in beam characteristics that has been uncovered as
increased attention has been devoted to developing a detailed
understanding of the source region. Also discussed are methods
of using the simulations to infer characteristics of the beam
distribution that can be difficult to measure directly.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Cited by
5 articles.
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