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Author : Bernd Kurzan
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (832 download)
Download or read book Investigation of the Dynamics of Runaway Electrons in the Magnetic Field of a Tokamak written by Bernd Kurzan and published by . This book was released on 1995 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B. Kurzan
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (476 download)
Download or read book Investigation of the dynamics of runaway electrons in themagnetic field of a tokamak written by B. Kurzan and published by . This book was released on 1995 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Steward Jay Zweben
Publisher :
ISBN 13 :
Total Pages : 578 pages
Book Rating : 4.E/5 ( download)
Download or read book An Investigation of High Energy Runaway Electron Confinement in the Oak Ridge Tokamak written by Steward Jay Zweben and published by . This book was released on 1977 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sadrilla Abdullaev
Publisher : Springer Science & Business Media
ISBN 13 : 3319018906
Total Pages : 422 pages
Book Rating : 4.3/5 (19 download)
Download or read book Magnetic Stochasticity in Magnetically Confined Fusion Plasmas written by Sadrilla Abdullaev and published by Springer Science & Business Media. This book was released on 2013-11-19 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book to systematically consider the modern aspects of chaotic dynamics of magnetic field lines and charged particles in magnetically confined fusion plasmas. The analytical models describing the generic features of equilibrium magnetic fields and magnetic perturbations in modern fusion devices are presented. It describes mathematical and physical aspects of onset of chaos, generic properties of the structure of stochastic magnetic fields, transport of charged particles in tokamaks induced by magnetic perturbations, new aspects of particle turbulent transport, etc. The presentation is based on the classical and new unique mathematical tools of Hamiltonian dynamics, like the action--angle formalism, classical perturbation theory, canonical transformations of variables, symplectic mappings, the Poincaré-Melnikov integrals. They are extensively used for analytical studies as well as for numerical simulations of magnetic field lines, particle dynamics, their spatial structures and statistical properties. The numerous references to articles on the latest development in the area are provided. The book is intended for graduate students and researchers who interested in the modern problems of magnetic stochasticity in magnetically confined fusion plasmas. It is also useful for physicists and mathematicians interested in new methods of Hamiltonian dynamics and their applications.
Author : Roy Alexander Tinguely
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.:/5 (113 download)
Download or read book An Analysis of Synchrotron Radiation from Relativistic Electrons in the Alcator C-Mod Tokamak written by Roy Alexander Tinguely and published by . This book was released on 2019 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the Alcator C-Mod tokamak, a magnetic confinement fusion experiment, electrons are accelerated to relativistic energies -- on the order of tens of MeV -- during steady-state conditions of Ohmic, elongated, and diverted plasma discharges. These so-called "runaway" electrons emit synchrotron radiation in their direction of motion due to their gyration in the background toroidal magnetic field, with values of B0 ranging from 2.7 to 7.8 T at the plasma axis. Two spectrometers, a wide-view camera, and a polarimeter are used to measure time-evolving spectra, images, and polarization information, respectively, of the synchrotron radiation in the visible/near-infrared wavelength range, [lambda] ~~ 300-1000 nm. The kinetic equation solver Code [Landreman et al 2014 Comput. Phys. Commun., Stahl et al 2016 Nucl. Fusion] and synthetic diagnostic Soft [Hoppe et al 2018 Nucl. Fusion] are used to model the evolution of the runaway electron phase space distribution and to simulate the detected synchrotron emission, respectively. The major contributions of this thesis work to the fields of plasma physics and fusion energy research are the following: Spectral measurements are consistent with runaway electrons' attaining lower energies as the magnetic field increases, a positive sign for future high-field fusion devices. The runaway electron density profile and other spatiotemporal dynamics, such as increased radial transport due to magnetohydrodynamic activity, are inferred from the two-dimensional synchrotron intensity distributions captured in camera images. Finally, for the first time in a tokamak plasma experiment, polarized synchrotron light is used as a novel diagnostic of the pitch angle distribution of runaway electrons. For all three measurements, discrepancies between experiment and theory/simulation are identified, and opportunities for future work are presented.
Author : Stephen Alan Eckstrand
Publisher :
ISBN 13 :
Total Pages : 109 pages
Book Rating : 4.:/5 (791 download)
Download or read book An investigation of runaway electrons in the PRETEXT Tokamak written by Stephen Alan Eckstrand and published by . This book was released on 1980 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yung Mok
Publisher :
ISBN 13 :
Total Pages : 276 pages
Book Rating : 4.:/5 (18 download)
Download or read book Dynamics and Consequences of Runaway Electrons in Tokamak Plasmas written by Yung Mok and published by . This book was released on 1978 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harry E. Mynick
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (355 download)
Download or read book Influence of Stochastic Magnetic Fields on the Confinement of Runaway Electrons and Thermal Electron Energy in Tokamaks written by Harry E. Mynick and published by . This book was released on 1980 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Cristian Sommariva
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)
Download or read book Test Particles Dynamics in 3D Non-linear Magnetohydrodynamics Simulations and Application to Runaway Electron Formation in Tokamak Disruptions written by Cristian Sommariva and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In view of better understanding Runaway Electron (RE) generation processes during tokamak disruptions, this work investigates test electron dynamics during a JET disruption simulated with the JOREK code. For this purpose, a JOREK module computing relativistic test particle orbits in the simulated fields has been developed and tested. The study shows that a significant fraction of pre-disruption thermal electrons remain confined in spite of the magnetic chaos characterizing the Thermal Quench (TQ) phase. This finding, which is related to the prompt reformation of closed flux surfaces after the TQ, supports the possibility of the so-called “hot tail” RE generation mechanism. In addition, it is found that electrons may be significantly accelerated during the TQ due to the presence of strong local electric field (E) fluctuations related to magnetohydrodynamic (MHD) activity. This phenomenon, which has virtually been ignored so far, may play an important role in RE generation. In connection to this modelling work, an experimental study on ASDEX Upgrade disruptions has been performed, suggesting that strong MHD activity reduces RE production.
Download or read book Investigation of High Energy Runaway Electron Confinement in the Oak Ridge Tokamak written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High energy runaway electrons in the Oak Ridge tokamak ORMAK have been investigated through measurement of the bremsstrahlung produced when these electrons leave the discharge and strike the limiting aperture of the torus. The experimental results have been interpreted in terms of a classical single-particle model appropriate for collisionless particles in a tokamak, and it has been found that most of the confinement properties of high energy runaways in ORMAK can be understood on this basis. An experiment designed to directly test this model has disclosed an anomalous transport which has been described by a runaway diffusion coefficient D approximately 102 to 104 cm2/sec appropriate for runaways near the outside of the plasma. A discussion of the possible mechanisms for this anomalous transport is given.
Download or read book Leakage of Runaway Electrons from Tokamaks written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Runaway electron orbits are calculated in a tokamak magnetic field. It is shown that these electrons tend to drift towards a larger major radius with a velocity v Vector/sub R/ = qcE/B0 R. This effect may be relevant to some recent experimental observations in tokamaks.
Author : G. Fussmann
Publisher :
ISBN 13 :
Total Pages : 33 pages
Book Rating : 4.:/5 (889 download)
Download or read book Generation and Dynamics of Runaway Electrons in Tokamaks written by G. Fussmann and published by . This book was released on 1976 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influence of Stochastic Magnetic Fields on the Confinement of Runaway Electrons and Thermal Electron Energy in Tokamaks written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 484 pages
Book Rating : 4.0/5 ( download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-02 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alexander Hugh Morton
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (153 download)
Download or read book The Energy of Runaway Electrons in the LT-4 Tokamak written by Alexander Hugh Morton and published by . This book was released on 1987 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.:/5 (3 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. D. Scott
Publisher :
ISBN 13 :
Total Pages : 780 pages
Book Rating : 4.:/5 (952 download)
Download or read book An Experimental Investigation of Magnetic Field Ripple Effects on Tokamak Plasmas written by S. D. Scott and published by . This book was released on 1982 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
