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Plasma lens focusing and plasma channel transport for heavy ion fusion

Abstract

The final focus lens in an ion beam driven inertial confinement fusion reactor is important since it sets limiting requirements for the quality of the driver beam. Improvements of the focusing capabilities can facilitate the construction of the driver significantly. A focusing system that is of interest both for heavy ion and for light ion drivers is an adiabatic, current carrying plasma lens. This lens is characterized by the fact that it can slowly (adiabatically) reduce the envelope radius of a beam over several betatron oscillations by increasing the focusing magnetic field along a tapered high current discharge. A reduction of the beam diameter by a factor of 3 to 5 seems feasible with this focusing scheme. Such a lens can be used for an ignition test facility where it can be directly coupled to the fusion target. For use in a repetitively working reactor chamber the lens has to be located outside of the reactor and the tightly focused but strongly divergent beam must be confined in a high current transport channel from the end of the lens into the immediate vicinity of the target. Laser preionization of a background gas is an efficient means to direct and stabilize  More>>
Authors:
Tauschwitz, A; Yu, S S; Bangerter, R O [1] 
  1. Lawrence Berkeley Lab., CA (United States); and others
Publication Date:
Dec 31, 1996
Product Type:
Conference
Report Number:
INIS-CZ-0002; CONF-960610-
Reference Number:
SCA: 700411; PA: AIX-28:056087; EDB-97:114614; SN: 97001835066
Resource Relation:
Journal Volume: 32-33; Conference: BEAMS `96: 11. international conference on high-power particle beams, Prague (Czech Republic), 10-14 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Beams `96. Proceedings of the 11th international conference on high power particle beams. Vol. I; Jungwirth, K.; Ullschmied, J. [eds.]; PB: [684] p.
Subject:
70 PLASMA PHYSICS AND FUSION; ION BEAM FUSION REACTORS; FOCUSING; ION BEAMS; BEAM OPTICS; BEAM TRANSPORT; ELECTROMAGNETIC LENSES; HEAVY IONS; INERTIAL FUSION DRIVERS; LASER-PRODUCED PLASMA; POTASSIUM IONS
OSTI ID:
511279
Research Organizations:
Ceskoslovenska Akademie Ved, Prague (Czech Republic). Ustav Fyziky Plazmatu
Country of Origin:
Czech Republic
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0920-3796; Other: ON: DE97637662; ISBN 80-902250-3-9; TRN: CZ9726693056087
Availability:
INIS; OSTI as DE97637662
Submitting Site:
INIS
Size:
pp. 91-94
Announcement Date:

Citation Formats

Tauschwitz, A, Yu, S S, and Bangerter, R O. Plasma lens focusing and plasma channel transport for heavy ion fusion. Czech Republic: N. p., 1996. Web. doi:10.1016/S0920-3796(96)00505-4.
Tauschwitz, A, Yu, S S, & Bangerter, R O. Plasma lens focusing and plasma channel transport for heavy ion fusion. Czech Republic. doi:10.1016/S0920-3796(96)00505-4.
Tauschwitz, A, Yu, S S, and Bangerter, R O. 1996. "Plasma lens focusing and plasma channel transport for heavy ion fusion." Czech Republic. doi:10.1016/S0920-3796(96)00505-4. https://www.osti.gov/servlets/purl/10.1016/S0920-3796(96)00505-4.
@misc{etde_511279,
title = {Plasma lens focusing and plasma channel transport for heavy ion fusion}
author = {Tauschwitz, A, Yu, S S, and Bangerter, R O}
abstractNote = {The final focus lens in an ion beam driven inertial confinement fusion reactor is important since it sets limiting requirements for the quality of the driver beam. Improvements of the focusing capabilities can facilitate the construction of the driver significantly. A focusing system that is of interest both for heavy ion and for light ion drivers is an adiabatic, current carrying plasma lens. This lens is characterized by the fact that it can slowly (adiabatically) reduce the envelope radius of a beam over several betatron oscillations by increasing the focusing magnetic field along a tapered high current discharge. A reduction of the beam diameter by a factor of 3 to 5 seems feasible with this focusing scheme. Such a lens can be used for an ignition test facility where it can be directly coupled to the fusion target. For use in a repetitively working reactor chamber the lens has to be located outside of the reactor and the tightly focused but strongly divergent beam must be confined in a high current transport channel from the end of the lens into the immediate vicinity of the target. Laser preionization of a background gas is an efficient means to direct and stabilize such a channel. Experiments have been started to test both, the principle of adiabatic focusing, and the stability of laser preionized high current discharge channels. (author). 4 figs., 7 refs.}
doi = {10.1016/S0920-3796(96)00505-4}
volume = {32-33}
place = {Czech Republic}
year = {1996}
month = {Dec}
}