Actions for Elliptic distribution in longitudinal phase space (supplement to TM-1381, ''The beam and the bucket'') [electronic resource].
Elliptic distribution in longitudinal phase space (supplement to TM-1381, ''The beam and the bucket'') [electronic resource].
Published
Batavia, Ill. : Fermi National Accelerator Laboratory, 1986. Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
As an alternative to either the uniform distribution (which is not really physical) or the Gaussian distribution (which is not finite), a finite distribution called ''elliptic'' is proposed and its main properties are presented. With canonical variables q triple bonded phi-phi/sub s/,y proportional to ..delta..p/p), this distribution takes the form rho(q,y) proportional to ..sqrt..y/sub B//sup 2/(q) - y/sup 2/ where y/sub B/(q) defines the boundary of a finite bunch in (q,y) space. It is assumed that the boundary is determined by the condition ''Hamiltonian in (q,y) = constant'' so that the shape is in general not symmetric in phase. This report is intended as a supplement to the previous one, ''The Beam and the Bucket'' and, as such, it is primarily for people working in the accelerator control rooms.