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Title: Adiabatic Focuser

Theoretical analysis is made of an intense relativistic electron beam. such as would be available from a linear collider, moving through a plasma of increasing density, but density always less than that of the beam (underdense). In this situation. the plasma electrons are expelled from the beam channel and the electrons are subject to an ever-increasing focusing force provided by the channel ions. Analysis is made on the beam radiation energy loss in the classical, the transition, and the quantum regimes. It is shown that the focuser is insensitive to the beam energy spread due to radiation loss. Furthermore, because of the different scaling behaviors in the nonclassical regimes, the radiation limit on lenses (the Oide limit) can be exceeded. The sensitivity of the system to the optic mismatch and the nonlinearity is also analyzed. Examples are given with SLC-type and TLC-type parameters.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
937207
Report Number(s):
LBL-27608
TRN: US200819%%40
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: XIV International Conference on High Energy Accelerators, Tsukuba,Japan, August 22-26, 1989
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
Accelerator& Fusion Research Division
Country of Publication:
United States
Language:
English
Subject:
99; ACCELERATORS; ELECTRON BEAMS; ELECTRONS; FOCUSING; LENSES; LINEAR COLLIDERS; OPTICS; PLASMA; RADIATIONS; SENSITIVITY