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Title: A continuous plasma final focus

Conference ·
OSTI ID:7020088

Scaling laws are set down for a plasma cell used for transport, focusing and current neutralization of fine, intense, relativistic electron beams. It is found that there exists a minimum beam spot size, {sigma}{sub min} {approximately} {var epsilon}{sub n}(I{sub A}/{gamma}I){sup 1/2}, in such a focusing system. Propagation issues, including channel formation, synchrotron radiation, beam ionization and instabilities, are discussed. Numerical examples are given for a proof-of-principle experiment at KEK, an application for luminosity enhancement at the SLC, and a hypothetical TeV electron-positron collider. For a TeV collider, it is found that the effect of ion-motion on focusing, and the effect of Buneman instability on current neutralization must be considered. 3 figs., 1 tab.

Research Organization:
Lawrence Berkeley Lab., CA (USA)
Sponsoring Organization:
DOE/ER; KEK
DOE Contract Number:
AC03-76SF00098
OSTI ID:
7020088
Report Number(s):
LBL-27965; CONF-8908209-1; ON: DE90006096; TRN: 90-007109
Resource Relation:
Conference: Workshop on the role of plasmas in accelerators, Tsukuba (Japan), 28 Aug - 1 Sep 1989
Country of Publication:
United States
Language:
English