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Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta Prime

1997
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Release : 1997
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Book Synopsis Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta Prime by :

Download or read book Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta Prime written by . This book was released on 1997. Available in PDF, EPUB and Kindle. Book excerpt: Tearing type modes are observed in most high-confinement operation regimes in TFTR. Three different methods are used to measure the magnetic island widths: external magnetic coils, internal temperature fluctuation from electron cyclotron emission (ECE) diagnostic and an experiment where the plasma major radius is rapidly shifted ('Jog' experiments). A good agreement between the three methods is observed. Numerical and analytic calculations of delta prime (the tearing instability index) are compared with an experimental measurement of delta prime using the tearing mode eigenfunction mapped from the Jog data. The obtained negative delta prime indicates that the observed tearing modes cannot be explained by the classical current-gradient-driven tearing theory.

Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part 1. Measurements of Magnetic Islands and Delta Prime

1997
Download Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part 1. Measurements of Magnetic Islands and Delta Prime PDF Online Free

Author :
Release : 1997
Genre :
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part 1. Measurements of Magnetic Islands and Delta Prime by :

Download or read book Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part 1. Measurements of Magnetic Islands and Delta Prime written by . This book was released on 1997. Available in PDF, EPUB and Kindle. Book excerpt: Tearing-type modes are observed in most high-confinement operation regimes in TFTR. Three different methods are used to measure the magnetic island widths: external magnetic coils, internal temperature fluctuation from the electron cyclotron emission (ECE) diagnostic, and an experiment where the plasma major radius is rapidly shifted ("Jog" experiments). A good agreement between the three methods is observed. Numerical and analytic calculations of delta prime (the tearing instability index) are compared with an experimental measurement of delta prime using the tearing-mode eigenfunction mapped from the jog data. The obtained negative delta prime indicates that the observed tearing modes cannot be explained by the classical current-gradient-driven tearing theory.

Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta

1997 Tokamaks
Download Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta PDF Online Free

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Release : 1997
Genre : Tokamaks
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Book Synopsis Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta by : Zuoyang Chang

Download or read book Neoclassical Tearing Modes in Tokamak Fusion Test Reactor Experiments Part I. Measurements of Magnetic Islands and Delta written by Zuoyang Chang. This book was released on 1997. Available in PDF, EPUB and Kindle. Book excerpt:

Mode Coupling Trigger of Neoclassical Magnetohydrodynamic Tearing Modes in Tokamaks

2001
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Release : 2001
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Book Synopsis Mode Coupling Trigger of Neoclassical Magnetohydrodynamic Tearing Modes in Tokamaks by :

Download or read book Mode Coupling Trigger of Neoclassical Magnetohydrodynamic Tearing Modes in Tokamaks written by . This book was released on 2001. Available in PDF, EPUB and Kindle. Book excerpt: Numerical studies of the nonlinear evolution of coupled magnetohydrodynamic - type tearing modes in three-dimensional toroidal geometry with neoclassical effects are presented. The inclusion of neoclassical physics introduces an additional free-energy source for the nonlinear formation of magnetic islands through the effects of a bootstrap current in Ohm's law. The neoclassical tearing mode is demonstrated to be destabilized in plasmas which are otherwise[Delta][prime] stable, albeit once a threshold island width is exceeded. A possible mechanism for exceeding or eliminating this threshold condition is demonstrated based on mode coupling due to toroidicity with a pre-existing instability at the q= 1 surface.

Computational Modeling of Neoclassical and Resistive MHD Tearing Modes in Tokamaks

1996
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Release : 1996
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Book Synopsis Computational Modeling of Neoclassical and Resistive MHD Tearing Modes in Tokamaks by : Thomas A. Gianakon

Download or read book Computational Modeling of Neoclassical and Resistive MHD Tearing Modes in Tokamaks written by Thomas A. Gianakon. This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt:

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