Unified Ideal Stability Limits for Advanced Tokamak and Spherical Torus Plasmas PDF Download
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Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
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Book Description
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
Get Book Here
Book Description
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
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Book Description
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : National Spherical Torus Experiment (Project).
Languages : en
Pages : 8
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Author: Hartmut Zohm
Publisher: John Wiley & Sons
ISBN: 3527412328
Category : Science
Languages : en
Pages : 254
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Book Description
This book bridges the gap between general plasma physics lectures and the real world problems in MHD stability. In order to support the understanding of concepts and their implication, it refers to real world problems such as toroidal mode coupling or nonlinear evolution in a conceptual and phenomenological approach. Detailed mathematical treatment will involve classical linear stability analysis and an outline of more recent concepts such as the ballooning formalism. The book is based on lectures that the author has given to Master and PhD students in Fusion Plasma Physics. Due its strong link to experimental results in MHD instabilities, the book is also of use to senior researchers in the field, i.e. experimental physicists and engineers in fusion reactor science. The volume is organized in three parts. It starts with an introduction to the MHD equations, a section on toroidal equilibrium (tokamak and stellarator), and on linear stability analysis. Starting from there, the ideal MHD stability of the tokamak configuration will be treated in the second part which is subdivided into current driven and pressure driven MHD. This includes many examples with reference to experimental results for important MHD instabilities such as kinks and their transformation to RWMs, infernal modes, peeling modes, ballooning modes and their relation to ELMs. Finally the coverage is completed by a chapter on resistive stability explaining reconnection and island formation. Again, examples from recent tokamak MHD such as sawteeth, CTMs, NTMs and their relation to disruptions are extensively discussed.
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : National Spherical Torus Experiment (Project)
Languages : en
Pages : 0
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Author: Linjin Zheng
Publisher: Morgan & Claypool Publishers
ISBN: 1627054235
Category : Science
Languages : en
Pages : 156
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Book Description
This book describes the advanced stability theories for magnetically confined fusion plasmas, especially in tokamaks. As the fusion plasma sciences advance, the gap between the textbooks and cutting-edge researches gradually develops. This book fills in
Author: D. Sherwell
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
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Author: Princeton University. Plasma Physics Laboratory
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 13
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Discharges with negative central magnetic shear (NCS) hold the promise of enhanced fusion performance in advanced tokamaks. However, stability to long wavelength magnetohydrodynamic modes is needed to take advantage of the improved confinement found in NCS discharges. The stability limits seen in DIII-D experiments depend on the pressure and current density profiles and are in good agreement with stability calculations. Discharges with a strongly peaked pressure profile reach a disruptive limit at low beta, [beta][sub N]=[beta] (I/aB)[sup -1][le] 2.5 (% m T/MA), caused by an n= 1 ideal internal kink mode or a global resistive instability close to the ideal stability limit. Discharges with a broad pressure profile reach a soft beta limit at significantly higher beta, [beta][sub N]= 4 to 5, usually caused by instabilities with n> 1 and usually driven near the edge of the plasma. With broad pressure profiles, the experimental stability limit is independent of the magnitude of negative shear but improves with the internal inductance, corresponding to lower current density near the edge of the plasma. Understanding of the stability limits in NCS discharges has led to record DIII-D fusion performance in discharges with a broad pressure profile and low edge current density.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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