Effect of betatron motion on the spetum flux in superslow extraction at the SSC.

摘要

A scheme for the superslow extraction of protons from SSC rings for high energy test beam or precision fixed-target B physics is currently being investigated. The flux onto the extraction septum (a curved Si crystal) is to be general diffusion produced by noise injected into the RF system. The extraction rate depends on both the diffusion of the closed orbit (due to dispersion at the crystal) and the horizontal betatron amplitude of the diffusing protons. The diffusion of the closed orbit has previously been described by the one-dimension longitudinal diffusion theory of Dome and Krinsky and Wang. In this paper, we extend this theory to include effect of the betatron motion. Comparisons with Monte Carlo tracking simulations are made. (ERA citation 18:024420)