Download or read book Modelling and Simulation of Plasma Heating with ICRF Waves in JET Tokamak written by Eric Planas Parra and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the challenges that magnetic confinement fusion faces is achieving extreme temperatures inside the reactors. Absorption of electromagnetic waves in the ion cyclotron range of frequencies (ICRF) has demonstrated efficient plasma heating in present-day tokamak experiments and it is one of the three auxiliary heating methods foreseen for the International Thermonuclear Experimental Reactor (ITER). Therefore, the study of different heating schemes using ICRF waves is of utmost interest to optimize the fusion performance. The present thesis is focused in the computational assessment of plasma heating using ICRF waves and neutral beam injection (NBI) using the PION code. A strong emphasis is given to the physics behind these heating mechanisms and how they affect the fusion performance. This project has been carried out in the context of the present deuterium (D) campaign that is being performed at the Joint European Torus (JET) experimental reactor in preparation for the next deuterium-tritium (D-T) campaign DTE2, which is planned to begin in 2021. The results presented in this thesis consist of two parts. In the first part we model several D plasma discharges carried out at JET and we assess the role of different heating characteristics in the fusion yield in pure D plasmas. The second part of this project is focused on the extrapolation of a high performance plasma discharge to a 50%:50% D-T scenario. A comparison of the heating characteristics with pure D plasmas is provided, and special attention is given to the resulting fusion yield.
Download or read book Modeling of ICRF Heating of a Tokamak Plasma written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A model for wave propagation and absorption of the Ion Cyclotron Range of Frequencies (ICRF) has been constructed and fitted into the 1-D BALDUR transport code. The wave propagation is handled by ray tracing techniques. Wave absorption is calculated using the Fokker-Planck equation and quasilinear diffusion. The wave propagation and damping profiles are evolved in time according to the plasma evolution. A simulation of PLT hydrogen minority ICRF heating with a comparison to experimental data is given.
Download or read book Fast Wave Coupling and Heating of Reactor Type Tokamaks in the ICRF written by Hugo Adolfo Romero and published by . This book was released on 1982 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Simulation of Plasmas written by Y.N. Dnestrovskii and published by Springer. This book was released on 2011-12-28 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to mathematical modeling of tokamak plasma. Since the appearance in 1982 of the first edition (in Russian), a considerable amount of experimental and theoretical material on tokamak research has been accumu lated. The new-generation devices, viz. , TFTR, JET and JT-60 were put into operation. The first experiments on these units have confirmed the correctness of the basic physical concepts underlying their construction. Experiments on plasma heating with the help of neutral beams and high-frequency (HF) waves on previous generation devices made it possible to obtain high-P plasmas. The number of "medium-size" tokamaks in operation has increased. New experi mental results and advances in the theory have led to more complicated and perfected models of high-temperature plasma. Rapid progress in computer hardware and software has played an important role in the further development of mathematical modeling. While preparing the English edition of the book, we have revised the text considerably. Several new models which have undergone significant advance ment in recent years are described. A section devoted to models of RF (radio frequency) current drive has been added to Chap. 2. The reduced magneto hydrodynamic (MHD) equations for high-P plasma are now considered in detail in Chap. 3. Chapter 4 contains the latest results on anomalous thermal conductivity, diffusion coefficient and pinching. Two new sections are added to Chap. 5.
Download or read book Numerical Simulations of ICRF Heated Tokamak Plasmas written by Donald Thomas Blackfield and published by . This book was released on 1980 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computation of ICRF Heating Fields in a Tokamak written by David N. Smithe and published by . This book was released on 1985 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling of ICRF Heating in PLT written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant heating with the fast magnetosonic wave near the ion cyclotron frequency has been demonstrated in the present generation of tokamaks. Effective wave absorption and heating can be achieved either by using the second harmonic or by heating at the fundamental of a minority ion component. Recent experiments in PLT have facilitated the refinement of a heating model which both shows good agreement with experiment and predicts favorable scaling to hotter, denser plasmas. Details of the model, including full wave theory, power deposition, Fokker-Planck theory, and scaling are discussed.
Download or read book High Power ICRF Heating Experiments on the JIPP T IIU Tokamak written by and published by . This book was released on 1989 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ICRF Heating and Wave Generation in the ATC Tokamak Part 1 written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental results and their theoretical interpretations of rf heating experiments in the ion cyclotron range of frequencies are presented. The presentation is in two parts, with this part describing the experimental facilities and characteristics of fast compressional Alfven waves in the tokamak, and a subsequent paper which will deal with the pricipal heating results. It is shown that a simple coupling structure which consists essentially of a semi-circular metal strip and a pair of bumper limiters is sufficient to efficiently couple rf power to the plasma. The major part of the coupled power is radiated as the fast wave, and there is no evidence that parasitic loading, if any, accounts for a significant amount of the power. A coupling efficiency (net coupled power/incident power) in excess of 90% is routinely obtained.
Download or read book Journal of the Physical Society of Japan written by and published by . This book was released on 2015 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ICRF Heating and Wave Generation in the ATC Tokamak written by Hironori Takahashi and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fusion Energy Update written by and published by . This book was released on 1981 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Control of Tokamak Plasmas written by Marco Ariola and published by Springer. This book was released on 2009-08-29 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: this part is supported by two useful appendices on some of the mathematical tools used and the physical units of plasma physics. State-space models, state observers, H control, and process simulations are some of the familiar techniques used by ? the authors to meet the demanding spatial control specifications for these processes; however, the research reported in the monograph is more that just simulation studies and proposals for possible future hypothetical controllers, for the authors have worked with some of the world’s leading existing tokamak facilities. Chapter 5, 8, and 9 respectively, give practical results of implementations of their control schemes on the FTU Tokamak (Italy), the TCV Tokamak (Switzerland), and the JET Tokamak (United Kingdom). Additionally, the authors present simulation results of their ideas for the control of the new tokamak proposed for the ITER project. In conclusion, being very aware that most control engineers will not be conversant with the complexities of tokamak nuclear fusion reactor control, the authors have taken special care to give a useful introduction to the background of nuclear fusion, the science of plasma physics and appropriate models in the first part of the monograph (Chapters 1 to 3). This introduction is followed by six chapters (4 to 9) of control studies. In Chapter 4, the generic control problem is established and then five case study chapters follow.
Download or read book Power Absorption and Confinement Studies of ICRF heated Plasma in JIPP T IIU Tokamak written by K. Ida and published by . This book was released on 1988 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electron Heating by Mode converted Ion Bernstein Waves in ICRF Heating of Tokamak Plasmas written by Abhay Ram and published by . This book was released on 1987 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
