Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
Book Description
Unified Ideal Stability Limits for Advanced Tokamak and Spherical Torus Plasmas
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
Book Description
Unified Ideal Stability Limits for Advanced Tokamak and Spherical Torus Plasmas
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Plasma density
Languages : en
Pages : 4
Book Description
Aspect Ratio Scaling of Ideal No-wall Stability Limits in High Bootstrap Fraction Tokamak Plasmas
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : National Spherical Torus Experiment (Project).
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : National Spherical Torus Experiment (Project).
Languages : en
Pages : 8
Book Description
Magnetohydrodynamic Stability of Tokamaks
Author: Hartmut Zohm
Publisher: John Wiley & Sons
ISBN: 3527412328
Category : Science
Languages : en
Pages : 254
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.
Publisher: John Wiley & Sons
ISBN: 3527412328
Category : Science
Languages : en
Pages : 254
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.
Aspect Ratio Scaling of Ideal No-wall Stability Limits in High Bootstrap Fraction Tokamak Plasmas
Author: Jonathan Edward Menard
Publisher:
ISBN:
Category : National Spherical Torus Experiment (Project)
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : National Spherical Torus Experiment (Project)
Languages : en
Pages : 0
Book Description
Advanced Tokamak Stability Theory
Author: Linjin Zheng
Publisher: Morgan & Claypool Publishers
ISBN: 1627054235
Category : Science
Languages : en
Pages : 156
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
Publisher: Morgan & Claypool Publishers
ISBN: 1627054235
Category : Science
Languages : en
Pages : 156
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
Magnetohydrodynamic Stability Limits of a High Beta Tokamak with Superimposed Helical Fields, Ideal
Author: D. Sherwell
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 94
Book Description
MHD Stability Limits on High-B Tokamaks
Author: Princeton University. Plasma Physics Laboratory
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 13
Book Description
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 13
Book Description
Stability of Negative Central Magnetic Shear Discharges in the DIII-D Tokamak
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Experimental and Theoretical Stability Limits of Highly Elongated Tokamak Plasmas
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description