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Self-organization of hot plasmas = t...

Dnestrovskij, Yu.N.

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Self-organization of hot plasmas = the canonical profile transport model /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Self-organization of hot plasmas/ by Yu.N. Dnestrovskij.
Reminder of title:	the canonical profile transport model /
Author:	Dnestrovskij, Yu.N.
Published:	Cham :Springer International Publishing : : 2015.,
Description:	xii, 134 p. :ill., digital ;24 cm.
[NT 15003449]:	Preface to the English Edition -- Preface to the Russian Edition -- 1 Introduction -- 2 Variational principles for canonical profiles in a tokamak -- 3 A possible approach to the canonical profiles in stellarators -- 4 Theoretical limitations for scaling laws and transport coefficients -- 5 Linear version of the Canonical profiles transport model (CPTM) -- 6 Nonlinear version of the canonical profiles transport model (CPTM) for improved confinement regimes.
Contained By:	Springer eBooks
Subject:	High temperature plasmas. -
Online resource:	http://dx.doi.org/10.1007/978-3-319-06802-2
ISBN:	9783319068022 (electronic bk.)

Self-organization of hot plasmas = the canonical profile transport model /
Dnestrovskij, Yu.N.

Self-organization of hot plasmasthe canonical profile transport model /[electronic resource] :by Yu.N. Dnestrovskij. - Cham :Springer International Publishing :2015. - xii, 134 p. :ill., digital ;24 cm.

Preface to the English Edition -- Preface to the Russian Edition -- 1 Introduction -- 2 Variational principles for canonical profiles in a tokamak -- 3 A possible approach to the canonical profiles in stellarators -- 4 Theoretical limitations for scaling laws and transport coefficients -- 5 Linear version of the Canonical profiles transport model (CPTM) -- 6 Nonlinear version of the canonical profiles transport model (CPTM) for improved confinement regimes.

This book is devoted to the problem of confinement of energy and particles in tokamak plasmas. The author presents the Canonical Profile Transport Model or CPTM as a rather general mathematical framework to simulate plasma discharges. The description of hot plasmas in a magnetic fusion device is a very challenging task and many plasma properties still lack a physical explanation. One important property is plasma self-organization. It is well known from experiments that the radial profile of the plasma pressure and temperature remains rather unaffected by changes of the deposited power or plasma density. The attractiveness of the CPTM is that it includes the effect of self-organization in the mathematical model without having to recur to particular physical mechanisms. The CPTM model contains one dimensional transport equations for ion and electron temperatures, plasma density and toroidal rotation velocity. These equations are well established but the expressions for the energy, particle and momentum fluxes, including corresponding critical gradients, are new. These critical gradients can be determined using the concept of canonical profiles for the first time formulated in great detail in the book. This concept represents a totally new approach to the description of transport in plasmas. Mathematically, the canonical profiles are formulated as a variational problem. To describe the temporal evolution of the plasma profiles, the Euler equation defining the canonical profiles is solved together with the transport equations at each time step. The author shows that in this way it is possible to describe very different operational scenarios in tokamaks (L-Mode, H-Mode, Advanced Modes, Radiating Improved Modes etc, using one unique principle. The author illustrates the application of this principle to the simulation of plasmas on leading tokamak devices in the world (JET, MAST, T-10, DIII-D, ASDEX-U, JT-60U). In all cases the small differences between the calculated profiles for the ion and electron temperatures and the experimental is rather confirm the validity of the CPTM. In addition, the model also describes the temperature and density pedestals in the H-mode and non steady-state regimes with current and density ramp up. The proposed model therefore provides a very useful mathematical tool for the analysis of experimental results and for the prediction of plasma parameters in future experiments.

ISBN: 9783319068022 (electronic bk.)

Standard No.: 10.1007/978-3-319-06802-2doiSubjects--Topical Terms:

673860
High temperature plasmas.

LC Class. No.: QC718.5.H5

Dewey Class. No.: 621.484

Self-organization of hot plasmas = the canonical profile transport model /
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100 1 $a Dnestrovskij, Yu.N. $3 2132598
245 1 0 $a Self-organization of hot plasmas $h [electronic resource] : $b the canonical profile transport model / $c by Yu.N. Dnestrovskij.
260 $a Cham : $b Springer International Publishing : $b Imprint: Springer, $c 2015.
300 $a xii, 134 p. : $b ill., digital ; $c 24 cm.
505 0 $a Preface to the English Edition -- Preface to the Russian Edition -- 1 Introduction -- 2 Variational principles for canonical profiles in a tokamak -- 3 A possible approach to the canonical profiles in stellarators -- 4 Theoretical limitations for scaling laws and transport coefficients -- 5 Linear version of the Canonical profiles transport model (CPTM) -- 6 Nonlinear version of the canonical profiles transport model (CPTM) for improved confinement regimes.
520 $a This book is devoted to the problem of confinement of energy and particles in tokamak plasmas. The author presents the Canonical Profile Transport Model or CPTM as a rather general mathematical framework to simulate plasma discharges. The description of hot plasmas in a magnetic fusion device is a very challenging task and many plasma properties still lack a physical explanation. One important property is plasma self-organization. It is well known from experiments that the radial profile of the plasma pressure and temperature remains rather unaffected by changes of the deposited power or plasma density. The attractiveness of the CPTM is that it includes the effect of self-organization in the mathematical model without having to recur to particular physical mechanisms. The CPTM model contains one dimensional transport equations for ion and electron temperatures, plasma density and toroidal rotation velocity. These equations are well established but the expressions for the energy, particle and momentum fluxes, including corresponding critical gradients, are new. These critical gradients can be determined using the concept of canonical profiles for the first time formulated in great detail in the book. This concept represents a totally new approach to the description of transport in plasmas. Mathematically, the canonical profiles are formulated as a variational problem. To describe the temporal evolution of the plasma profiles, the Euler equation defining the canonical profiles is solved together with the transport equations at each time step. The author shows that in this way it is possible to describe very different operational scenarios in tokamaks (L-Mode, H-Mode, Advanced Modes, Radiating Improved Modes etc, using one unique principle. The author illustrates the application of this principle to the simulation of plasmas on leading tokamak devices in the world (JET, MAST, T-10, DIII-D, ASDEX-U, JT-60U). In all cases the small differences between the calculated profiles for the ion and electron temperatures and the experimental is rather confirm the validity of the CPTM. In addition, the model also describes the temperature and density pedestals in the H-mode and non steady-state regimes with current and density ramp up. The proposed model therefore provides a very useful mathematical tool for the analysis of experimental results and for the prediction of plasma parameters in future experiments.
650 0 $a High temperature plasmas. $3 673860
650 1 4 $a Physics. $3 516296
650 2 4 $a Plasma Physics. $3 1074160
650 2 4 $a Mathematical Methods in Physics. $3 890898
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950 $a Physics and Astronomy (Springer-11651)