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OverviewFull Product DetailsAuthor: Hartmut ZohmPublisher: Wiley-VCH Verlag GmbH Imprint: Blackwell Verlag GmbH Dimensions: Width: 17.30cm , Height: 1.40cm , Length: 24.40cm Weight: 0.562kg ISBN: 9783527412327ISBN 10: 3527412328 Pages: 240 Publication Date: 17 December 2014 Audience: College/higher education , Professional and scholarly , Postgraduate, Research & Scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: To order  Stock availability from the supplier is unknown. We will order it for you and ship this item to you once it is received by us. Table of ContentsPreface IX 1 The MHD Equations 1 1.1 Derivation of the MHD Equations 1 1.1.1 Multispecies MHD Equations 1 1.1.2 One-Fluid Model of Magnetohydrodynamics 4 1.1.3 Validity of the One-Fluid Model of Magnetohydrodynamics 6 1.2 Consequences of the MHD Equations 8 1.2.1 Magnetic Flux Conservation 8 1.2.2 MHD Equilibrium 10 1.2.3 Magnetohydrodynamic Waves 11 1.2.3.1 Compressional Alfvén Waves 12 1.2.3.2 Shear Alfvén Waves 13 2 MHD Equilibria in Fusion Plasmas 15 2.1 Linear Configurations 15 2.1.1 The z-Pinch 15 2.1.2 The Screw Pinch 18 2.2 Toroidal Configurations 22 2.2.1 The Tokamak 23 2.2.1.1 The Grad–Shafranov Equation 23 2.2.1.2 Circular Cross Section 27 2.2.1.3 Arbitrary Cross Section 32 2.2.1.4 The Straight Field Line Angle 34 2.2.2 The Stellarator 37 3 Linear Ideal MHD Stability Analysis 43 3.1 Linear MHD Stability as an Initial Value Problem 44 3.2 The Energy Principle of Ideal MHD 47 3.3 Forms of 𝛿W 48 3.4 The Ideal MHD Energy Principle for the Tokamak 51 4 Current Driven Ideal MHD Modes in a Tokamak 55 4.1 Expression for 𝛿W in Tokamak Ordering 55 4.2 External Kinks in a Tokamak with 𝛽= 0 56 4.2.1 Modes with m = 1 56 4.2.2 Modes with m ≥ 2 58 4.3 Internal Kink Modes 61 4.4 n = 0 Modes: The Vertical Displacement Event (VDE) 63 5 Pressure Driven Modes in a Tokamak 69 5.1 Localized Interchange Modes in the Screw Pinch 69 5.2 Localized Pressure Driven Modes in the Tokamak 72 5.2.1 Interchange Modes in a Tokamak 73 5.2.2 Ballooning Modes 76 6 Combined Pressure and Current Driven Modes: Edge Localized Modes 83 6.1 ELM Phenomenology 84 6.2 Linear Stability of the Pedestal 86 6.3 Non-linear Evolution 90 6.3.1 Non-linear Cycles 90 6.3.2 Magnitude of the ELM Crash 92 6.3.3 Timescale of the ELM Crash 94 6.4 ELM Control 94 6.4.1 Small ELM Regimes 95 6.4.2 Active ELM Control 97 7 Combined Pressure and Current Driven Modes: The Ideal 𝜷-Limit 103 7.1 Tokamak Operational Scenarios 103 7.2 External Kink Modes in a Tokamak with Finite 𝛽105 7.3 The Effect of a Conducting Wall on External Kink Modes 107 7.3.1 Ideally Conducting Wall 107 7.3.2 Resistive Wall 110 7.4 The Resistive Wall Mode (RWM) 112 7.5 The Troyon Limit 118 8 Resistive MHD Stability 123 8.1 Stability of Current Sheets 124 8.2 Reconnection in the Presence of a Guide Field 127 8.3 Magnetic Islands in Tokamaks 134 8.4 The Rutherford Equation 137 9 Current Driven (‘classical’) Tearing Modes in Tokamaks 141 9.1 Effect of Tearing Modes on Kinetic Profiles 141 9.2 Nonlinear Saturation 144 9.3 Tearing Mode Rotation and Locking 146 9.3.1 Rotation of Tearing Modes in Tokamaks 146 9.3.2 Locking of Pre-existing Magnetic Islands 148 9.3.3 Ab-initio Locked Modes 152 10 Disruptions 159 10.1 Phenomenology of Disruptions 159 10.1.1 The Density Limit 161 10.2 Consequences of Disruptions 165 10.2.1 Thermal Loads 165 10.2.2 Mechanical Loads 166 10.2.3 Runaway Generation 168 10.3 Disruption Avoidance and Mitigation 171 11 M=1 Modes beyond Ideal MHD: Sawteeth and Fishbones 175 11.1 The Sawtooth Instability 17 11.1.1 Phenomenology 175 11.1.2 Sawtooth Period and Onset Criterion 17 11.1.3 Models for the Sawtooth Crash 181 11.2 The Fishbone Instability 184 12 Tearing Modes in Finite 𝜷-Tokamaks 189 12.1 The Modified Rutherford Equation 189 12.2 The Neoclassical Tearing Mode (NTM) 190 12.3 Onset Criteria for NTMs 194 12.4 Frequently Interrupted Regime (FIR) NTMs 197 13 Control of Resistive MHD Instabilities by External Current Drive 201 13.1 Basic Properties of Localized Electron Cyclotron Current Drive (ECCD) 202 13.2 Criteria for Control of Resistive Instabilities 203 13.2.1 Control by Changing the Equilibrium Current Density 203 13.2.2 Control by Generating Helical Currents 206 13.3 Sawtooth Control 208 13.4 Tearing Mode Control 211 References 215 Index 221ReviewsThe book is an excellent introduction and composition of modern results that may help not only the newcomers but also the specialists { congratulations to the author. (Zentralblatt MATH, 1 September 2015) Author InformationHartmut Zohm is Director of the Tokamak Scenario Development Division at the Max-Planck-Institute for Plasma Physics located in Garching, Germany. His main fields of interest are the magnetohydrodynamic (MHD) stability of fusion plasmas and their heating by Electron Cyclotron Resonance Heating (ECRH). By combining these two fields, he pioneered the active stabilisation of neoclassical magnetic islands, which set a major performance limit to the tokamak, by ECRH. His present field is the study of tokamak physics on the ASDEX Upgrade tokamak which is operated by his department. Professor Zohm has published a total of more than 200 papers. He is member of several international committees such as the ITPA coordinating committee, the IEA Implementing Agreement on Collaboration of Tokamak Programmes, the Programme Advisory Committees of MAST, KSTAR, DIII-D and the scientific advisory board of IPP.CR and the EU Fusion STAC. He is also a member of the board of editors of the 'Nuclear Fusion' journal and a member of the advisory boards of the 'Annalen der Physik' journal. Tab Content 6Author Website:Countries AvailableAll regions |
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