Studies of Enhanced confinement in the columbia non-neutral torus

P. W. Brenner; T. Sunn Pedersen; M. Hahn; J. W. Berkery; R. G. Lefrancois; Q. R. Marksteiner

doi:10.1063/1.3122295

Studies of Enhanced confinement in the columbia non-neutral torus

P. W. Brenner, T. Sunn Pedersen, M. Hahn, J. W. Berkery, R. G. Lefrancois, Q. R. Marksteiner

Research output: Contribution to journal › Conference article › peer-review

Abstract

Recently the measured confinement time in the Columbia Non-neutral Torus (CNT) has been increased by nearly an order of magnitude to 190 ms. Previously, enhanced transport caused in part by the mismatch of constant potential and magnetic surfaces limited confinement times to 20 ms. A conducting boundary conforming to the last closed magnetic flux surface has been installed to minimize potential variation along magnetic surfaces, provide new methods to influence the plasma, and act as an external diagnostic. A summary of new results with the conducting boundary installed will be presented, including discussion of how confinement is influenced by neutral pressure, magnetic field strength, and the effect of biasing individual sectors of the mesh.

Original language	English (US)
Pages (from-to)	75-80
Number of pages	6
Journal	AIP Conference Proceedings
Volume	1114
DOIs	https://doi.org/10.1063/1.3122295
State	Published - 2009
Externally published	Yes
Event	9th International Workshop on Non-Neutral Plasma Physics - New York, NY, United States Duration: Jun 16 2008 → Jun 20 2008

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Keywords

Magnetic confinement
Neoclassical transport
Non-neutral plasmas
Plasma confinement
Pure electron plasmas
Stellarators

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10.1063/1.3122295

Cite this

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title = "Studies of Enhanced confinement in the columbia non-neutral torus",

abstract = "Recently the measured confinement time in the Columbia Non-neutral Torus (CNT) has been increased by nearly an order of magnitude to 190 ms. Previously, enhanced transport caused in part by the mismatch of constant potential and magnetic surfaces limited confinement times to 20 ms. A conducting boundary conforming to the last closed magnetic flux surface has been installed to minimize potential variation along magnetic surfaces, provide new methods to influence the plasma, and act as an external diagnostic. A summary of new results with the conducting boundary installed will be presented, including discussion of how confinement is influenced by neutral pressure, magnetic field strength, and the effect of biasing individual sectors of the mesh.",

keywords = "Magnetic confinement, Neoclassical transport, Non-neutral plasmas, Plasma confinement, Pure electron plasmas, Stellarators",

author = "Brenner, \{P. W.\} and Pedersen, \{T. Sunn\} and M. Hahn and Berkery, \{J. W.\} and Lefrancois, \{R. G.\} and Marksteiner, \{Q. R.\}",

year = "2009",

doi = "10.1063/1.3122295",

language = "English (US)",

volume = "1114",

pages = "75--80",

journal = "AIP Conference Proceedings",

issn = "0094-243X",

publisher = "American Institute of Physics",

note = "9th International Workshop on Non-Neutral Plasma Physics ; Conference date: 16-06-2008 Through 20-06-2008",

}

TY - JOUR

T1 - Studies of Enhanced confinement in the columbia non-neutral torus

AU - Brenner, P. W.

AU - Pedersen, T. Sunn

AU - Hahn, M.

AU - Berkery, J. W.

AU - Lefrancois, R. G.

AU - Marksteiner, Q. R.

PY - 2009

Y1 - 2009

N2 - Recently the measured confinement time in the Columbia Non-neutral Torus (CNT) has been increased by nearly an order of magnitude to 190 ms. Previously, enhanced transport caused in part by the mismatch of constant potential and magnetic surfaces limited confinement times to 20 ms. A conducting boundary conforming to the last closed magnetic flux surface has been installed to minimize potential variation along magnetic surfaces, provide new methods to influence the plasma, and act as an external diagnostic. A summary of new results with the conducting boundary installed will be presented, including discussion of how confinement is influenced by neutral pressure, magnetic field strength, and the effect of biasing individual sectors of the mesh.

AB - Recently the measured confinement time in the Columbia Non-neutral Torus (CNT) has been increased by nearly an order of magnitude to 190 ms. Previously, enhanced transport caused in part by the mismatch of constant potential and magnetic surfaces limited confinement times to 20 ms. A conducting boundary conforming to the last closed magnetic flux surface has been installed to minimize potential variation along magnetic surfaces, provide new methods to influence the plasma, and act as an external diagnostic. A summary of new results with the conducting boundary installed will be presented, including discussion of how confinement is influenced by neutral pressure, magnetic field strength, and the effect of biasing individual sectors of the mesh.

KW - Magnetic confinement

KW - Neoclassical transport

KW - Non-neutral plasmas

KW - Plasma confinement

KW - Pure electron plasmas

KW - Stellarators

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DO - 10.1063/1.3122295

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AN - SCOPUS:65549108796

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VL - 1114

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EP - 80

JO - AIP Conference Proceedings

JF - AIP Conference Proceedings

T2 - 9th International Workshop on Non-Neutral Plasma Physics

Y2 - 16 June 2008 through 20 June 2008

ER -

Studies of Enhanced confinement in the columbia non-neutral torus

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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