Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Overview of D-T Results from TFTR. PDF full book. Access full book title Overview of D-T Results from TFTR. by . Download full books in PDF and EPUB format.
Author: Publisher: ISBN: Category : Languages : en Pages : 15
Book Description
Experiments with plasmas having nearly equal concentrations of deuterium and tritium have been carried out on TFTR. To date, the maximum fusion power has been 10.7 MW, using 39.5 MW of neutral-beam heating, in a supershot discharge and 6.7 MW in a high-[beta]{sub p} discharge following a current ramp-down. The fusion power density in the core of the plasma has reached 2.8 MWm−3, exceeding that expected in the International Thermonuclear Experimental Reactor (ITTER). The energy confinement time, [tau]{sub E}, is observed to increase in D-T, relative to D plasmas, by 20% and the n{sub i}(O)·[tau]{sub E} product by 55%. The improvement in thermal confinement is caused primarily by a decrease in ion heat conductivity in both supershot and limiter-H-mode discharges. Extensive lithium pellet injection increased the confinement time to 0.27 s and enabled higher current operation in both supershot and high-[beta]{sub p} discharges. First measurements of the confined alpha particles have been performed and found to be in good agreement with TRANSP simulations assuming classical confinement. Measurements of the alpha ash profile have been compared with simulations using particle transport coefficients from helium gas puffing experiments. The loss of energetic alpha particles to a detector at the bottom of the vessel is well described by the first-orbit loss mechanism. No loss due to alpha-particle-driven instabilities has yet been observed. ICRF heating of a D-T plasma, using the second harmonic of tritium, has been demonstrated. D-T experiments on TFTR will continue both to explore the physics underlying the ITER design and to examine some of the physics issues associated with an advanced tokamak reactor.
Author: Publisher: ISBN: Category : Languages : en Pages : 15
Book Description
Experiments with plasmas having nearly equal concentrations of deuterium and tritium have been carried out on TFTR. To date, the maximum fusion power has been 10.7 MW, using 39.5 MW of neutral-beam heating, in a supershot discharge and 6.7 MW in a high-[beta]{sub p} discharge following a current ramp-down. The fusion power density in the core of the plasma has reached 2.8 MWm−3, exceeding that expected in the International Thermonuclear Experimental Reactor (ITTER). The energy confinement time, [tau]{sub E}, is observed to increase in D-T, relative to D plasmas, by 20% and the n{sub i}(O)·[tau]{sub E} product by 55%. The improvement in thermal confinement is caused primarily by a decrease in ion heat conductivity in both supershot and limiter-H-mode discharges. Extensive lithium pellet injection increased the confinement time to 0.27 s and enabled higher current operation in both supershot and high-[beta]{sub p} discharges. First measurements of the confined alpha particles have been performed and found to be in good agreement with TRANSP simulations assuming classical confinement. Measurements of the alpha ash profile have been compared with simulations using particle transport coefficients from helium gas puffing experiments. The loss of energetic alpha particles to a detector at the bottom of the vessel is well described by the first-orbit loss mechanism. No loss due to alpha-particle-driven instabilities has yet been observed. ICRF heating of a D-T plasma, using the second harmonic of tritium, has been demonstrated. D-T experiments on TFTR will continue both to explore the physics underlying the ITER design and to examine some of the physics issues associated with an advanced tokamak reactor.
Author: Publisher: ISBN: Category : Languages : en Pages : 15
Book Description
Experiments with plasmas having nearly equal concentrations of deuterium and tritium have been carried out on TFTR. To date, the maximum fusion power has been 10.7 MW, using 39.5 MW of neutral-beam heating, in a supershot discharge and 6.7 MW in a high-[beta]{sub p} discharge following a current ramp-down. The fusion power density in the core of the plasma has reached 2.8 MWm−3, exceeding that expected in the International Thermonuclear Experimental Reactor (ITTER). The energy confinement time, [tau]{sub E}, is observed to increase in D-T, relative to D plasmas, by 20% and the n{sub i}(O)·[tau]{sub E} product by 55%. The improvement in thermal confinement is caused primarily by a decrease in ion heat conductivity in both supershot and limiter-H-mode discharges. Extensive lithium pellet injection increased the confinement time to 0.27 s and enabled higher current operation in both supershot and high-[beta]{sub p} discharges. First measurements of the confined alpha particles have been performed and found to be in good agreement with TRANSP simulations assuming classical confinement. Measurements of the alpha ash profile have been compared with simulations using particle transport coefficients from helium gas puffing experiments. The loss of energetic alpha particles to a detector at the bottom of the vessel is well described by the first-orbit loss mechanism. No loss due to alpha-particle-driven instabilities has yet been observed. ICRF heating of a D-T plasma, using the second harmonic of tritium, has been demonstrated. D-T experiments on TFTR will continue both to explore the physics underlying the ITER design and to examine some of the physics issues associated with an advanced tokamak reactor.
Author: Richard C. Ragaini Publisher: World Scientific ISBN: 9812773894 Category : Science Languages : en Pages : 490
Book Description
Since its inception in 1981, the Erice Seminars from which this book series originates have attracted the attention of world leaders in science, technology and culture. This latest volume in the series covers a wide range of topics OCo from energy studies and research to disarmament and cultural emergencies. In addition to the main topics, the book also includes an associated workshop program (the 33rd Session) focusing on cultural emergencies, specifically designing and building in resilience against chemical, biological and radiological attacks. Sample Chapter(s). Chapter 1: The 34th Session of the International Seminars on Planetary Emergencies and Associated Meetings (296 KB). Contents: Energy: Nuclear and Renewable Energy: Nuclear Power in Europe (A Birkhofer); The Asian Nuclear Power Issue (A Miyahara); Climatology: Global Warming: Observational Climate Data and Comparison with Models (D H Douglass); Understanding Common Climate Claims (R S Lindzen); AIDS and Infectious Diseases: New Threats from Infectious Agents: Ebola Viral, Haemorrhagic Fever, Nipah Encephalities, SARS Avian Influenza: Episodes in a Never Ending Story? (J-C Manuguerra); Emerging Virus Infectious in a Changing World (A D M E Osterhaus); Brain Diseases: Update: Update on Transmissible Spongiform Encephalopathies (H Budka); Limits of Development: Migration: A West African Point of View on Migration (M Diop); Migration in the 21st Century OCo A Mexican Perspective (A Gonzilez-Pozo); Pollution: Science and Technology: Subsurface Laser Drilling Applications (R Parker & L Everett); Desertification: Remote Sensing and Desertification: Desertification in the Sahel Revisited (L Olsson); Integrated Approaches to Desertification (E F Lambin); Permanent Monitoring Panel Meetings and Reports: Major Shortcomings in US Immigration Policy: Get Tough or Get Real? (C D Ellis); Conceptual Approach in the Creation and Implementation of the National Strategy for Sustainable Development of the Republic of Macedonia (M Milosevska); Disarmament and Cultural Emergencies: Non-Proliferation, Evolution OCo Minimal Life: Will the Non-Proliferation Treaty Survive? (H Wegener); Comments on the Non-Proliferation Treaty (R Wilson); Energy Workshop: Carbon Sequestration and Storage OCo The Needs (H Khatib); Consensus and Disagreement on Climate Change Due to Carbon Dioxide (K S Lackner); Information Security Workshop: Implementing Information Security and Its Technology: A Line Management Perspective (W A Barletta); Contributions and Recommendations for Bridging the Digital Divide (A Lehmann); Workshop on Building Resilience Associated with the 33rd Session (Terrorism) OCo 5OCo6 May 2005: The Biological Threat (R Dierstein & A Driks); Damage Mitigation of Buildings Against Blast Loading (C Mayrhofer); and other papers. Readership: Scientists, academics, psychologists, sociologists, political analysts, historians and government officials."
Author: Frederick B. Marcus Publisher: Springer Nature ISBN: 3031177118 Category : Science Languages : en Pages : 484
Book Description
This book offers an overall review, applying systems engineering and architecture approaches, of the design, optimization, operation and results of leading fusion experiments. These approaches provide a unified means of evaluating reactor design. Methodologies are developed for more coherent construction or evaluation of fusion devices, associated experiments and operating procedures. The main focus is on tokamaks, with almost all machines and their important results being integrated into a systems design space. Case studies focus on DIII-D, TCV, JET, WEST, the fusion reactor prototype ITER and the EU DEMO concept. Stellarator, Mirror and Laser inertial confinement experiments are similarly analysed, including reactor implications of breakeven at NIF. The book examines the engineering and physics design and optimization process for each machine, analysing their performance and major results achieved, thus establishing a basis for the improvement of future machines. The reader will gain a broad historical and up-to-date perspective of the status of nuclear fusion research from both an engineering and physics point of view. Explanations are given of the computational tools needed to design and operate successful experiments and reactor-relevant machines. This book is aimed at both graduate students and practitioners of nuclear fusion science and engineering, as well as those specializing in other fields demanding large and integrated experimental equipment. Systems engineers will obtain valuable insights into fusion applications. References are given to associated complex mathematical derivations, which are beyond the scope of this book. The general reader interested in nuclear fusion will find here an accessible summary of the current state of nuclear fusion.
Author: 
Author: 
Author: Gregory Wayne Hammett
Author: 
Author: D. W. Johnson
Author: Dale M. Meade
Author: Richard C. Ragaini
Author: R. J. Hawryluk
Author: Frederick B. Marcus
Author: D. W. Johnson
Author: