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Title: Helically linked mirror arrangement

Abstract

A scheme is described for helical linking of mirror sections, which endeavors to combine the better features of toroidal and mirror devices by eliminating the longitudinal loss of mirror machines, having moderately high average ..beta.. and steady state operation. This scheme is aimed at a device, with closed magnetic surfaces having rotational transform for equilibrium, one or more axisymmetric straight sections for reduced radial loss, a simple geometrical axis for the links and an overall positive magnetic well depth for stability. We start by describing several other attempts at linking of mirror sections, made both in the past and the present. Then a description of our helically linked mirror scheme is given. This example has three identical straight sections connected by three sections having helical geometric axes. A theoretical analysis of the magnetic field and single-particle orbits in them leads to the conclusion that most of the passing particles would be confined in the device and they would have orbits independent of pitch angle under certain conditions. Numerical results are presented, which agree well with the theoretical results as far as passing particle orbits are concerned.

Authors:
Publication Date:
Research Org.:
Lawrence Berkeley Lab., CA (USA)
OSTI Identifier:
7008679
Report Number(s):
LBL-22233
ON: DE87001883
DOE Contract Number:
AC03-76SF00098
Resource Type:
Technical Report
Resource Relation:
Other Information: Thesis. Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; MAGNETIC MIRROR CONFIGURATIONS; HELICAL CONFIGURATION; EQUILIBRIUM; MAGNETIC SURFACES; PLASMA CONFINEMENT; ROTATIONAL TRANSFORM; CONFIGURATION; CONFINEMENT; MAGNETIC FIELD CONFIGURATIONS; OPEN CONFIGURATIONS; 700200* - Fusion Energy- Fusion Power Plant Technology

Citation Formats

Ranjan, P. Helically linked mirror arrangement. United States: N. p., 1986. Web. doi:10.2172/7008679.
Ranjan, P. Helically linked mirror arrangement. United States. doi:10.2172/7008679.
Ranjan, P. Fri . "Helically linked mirror arrangement". United States. doi:10.2172/7008679. https://www.osti.gov/servlets/purl/7008679.
@article{osti_7008679,
title = {Helically linked mirror arrangement},
author = {Ranjan, P.},
abstractNote = {A scheme is described for helical linking of mirror sections, which endeavors to combine the better features of toroidal and mirror devices by eliminating the longitudinal loss of mirror machines, having moderately high average ..beta.. and steady state operation. This scheme is aimed at a device, with closed magnetic surfaces having rotational transform for equilibrium, one or more axisymmetric straight sections for reduced radial loss, a simple geometrical axis for the links and an overall positive magnetic well depth for stability. We start by describing several other attempts at linking of mirror sections, made both in the past and the present. Then a description of our helically linked mirror scheme is given. This example has three identical straight sections connected by three sections having helical geometric axes. A theoretical analysis of the magnetic field and single-particle orbits in them leads to the conclusion that most of the passing particles would be confined in the device and they would have orbits independent of pitch angle under certain conditions. Numerical results are presented, which agree well with the theoretical results as far as passing particle orbits are concerned.},
doi = {10.2172/7008679},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 01 00:00:00 EDT 1986},
month = {Fri Aug 01 00:00:00 EDT 1986}
}

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