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A New Interpretation Of Alpha Particle Driven Instabilities In Deuterium Tritium Experiments On The Tomahawk Fusion Test Reactor
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Book Synopsis A New Interpretation of Alpha-particle-driven Instabilities in Deuterium-tritium Experiments on the Tomahawk Fusion Test Reactor by : R. Nazikian
Download or read book A New Interpretation of Alpha-particle-driven Instabilities in Deuterium-tritium Experiments on the Tomahawk Fusion Test Reactor written by R. Nazikian and published by . This book was released on 2004* with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Interpretation of Alpha-particle-driven Instabilities in Deuterium-tritium Experiments on the Tokamak Fusion Test Reactor by : R. Nazikian
Download or read book A New Interpretation of Alpha-particle-driven Instabilities in Deuterium-tritium Experiments on the Tokamak Fusion Test Reactor written by R. Nazikian and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A New Interpretation of Alpha-particle-driven Instabilities in Deuterium-Tritium Experiments on the Tokamak Fusion Test Reactor by :
Download or read book A New Interpretation of Alpha-particle-driven Instabilities in Deuterium-Tritium Experiments on the Tokamak Fusion Test Reactor written by and published by . This book was released on 2003 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The original description of alpha-particle-driven instabilities in the Tokamak Fusion Test Reactor (TFTR) in terms of Toroidal Alfvin Eigenmodes (TAEs) remained inconsistent with three fundamental characteristics of the observations: (i) the variation of the mode frequency with toroidal mode number, (ii) the chirping of the mode frequency for a given toroidal mode number, and (iii) the anti-ballooning density perturbation of the modes. It is now shown that these characteristics can be explained by observing that cylindrical-like modes can exist in the weak magnetic shear region of the plasma that then make a transition to TAEs as the central safety factor decreases in time.
Book Synopsis Alpha Particle Losses from Tokamak Fusion Test Reactor Deuterium-tritium Plasmas by : Mark Christopher Herrmann
Download or read book Alpha Particle Losses from Tokamak Fusion Test Reactor Deuterium-tritium Plasmas written by Mark Christopher Herrmann and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparations for Deuterium Tritium Experiments on the Tokamak Fusion Test Reactor by :
Download or read book Preparations for Deuterium Tritium Experiments on the Tokamak Fusion Test Reactor written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The final hardware modifications for tritium operation have been completed for the Tokamak Fusion Test Reactor (TFTR). These activities include preparation of the tritium gas handling system, installation of additional neutron shielding, conversion of the toroidal field coil cooling system from water to a Fluorinet[sup [trademark]] system, modification of the vacuum system to handle tritium, preparation and testing of the neutral beam system for tritium operation and a final deuterium-deuterium (D-D) run to simulate expected deuterium-tritium (D-T) operation. Testing of the tritium system with low concentration tritium has successfully begun. Simulation of trace and high power D-T experiments using D-D have been performed. The physics objectives of D-T operation are production of [approximately] 10 megawatts (MW) of fusion power, evaluation of confinement and heating in deuterium-tritium plasmas, evaluation of [alpha]-particle heating of electrons, and collective effects driven by alpha particles and testing of diagnostics for confined [alpha]-particles. Experimental results and theoretical modeling in support of the D-T experiments are reviewed.
Book Synopsis Deuterium-tritium Experiments on the Tokamak Fusion Test Reactor by : J. H. Adler
Download or read book Deuterium-tritium Experiments on the Tokamak Fusion Test Reactor written by J. H. Adler and published by . This book was released on 1994 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Alpha Particle Physics Experiments in the Tokamak Fusion Test Reactor by : S. J. Zweben
Download or read book Alpha Particle Physics Experiments in the Tokamak Fusion Test Reactor written by S. J. Zweben and published by . This book was released on 1998 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Iter Physics by : C Wendell Horton, Jr
Download or read book Iter Physics written by C Wendell Horton, Jr and published by World Scientific. This book was released on 2015-06-25 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The promise of a vast and clean source of thermal power drove physics research for over fifty years and has finally come to collimation with the international consortium led by the European Union and Japan, with an agreement from seven countries to build a definitive test of fusion power in ITER. It happened because scientists since the Manhattan project have envisioned controlled nuclear fusion in obtaining energy with no carbon dioxide emissions and no toxic nuclear waste products.This large toroidal magnetic confinement ITER machine is described from confinement process to advanced physics of plasma-wall interactions, where pulses erupt from core plasma blistering the machine walls. Emissions from the walls reduce the core temperature which must remain ten times hotter than the 15 million degree core solar temperature to maintain ITER fusion power. The huge temperature gradient from core to wall that drives intense plasma turbulence is described in detail.Also explained are the methods designed to limit the growth of small magnetic islands, the growth of edge localized plasma plumes and the solid state physics limits of the stainless steel walls of the confinement vessel from the burning plasma. Designs of the wall coatings and the special 'exhaust pipe' for spent hot plasma are provided in two chapters. And the issues associated with high-energy neutrons — about 10 times higher than in fission reactions — and how they are managed in ITER, are detailed.
Download or read book Диалектика, теория познания written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis First Evidence of Collective Alpha Particle Effect on TAE Modes in the TFTR D-T Experiment by : K. L. Wong
Download or read book First Evidence of Collective Alpha Particle Effect on TAE Modes in the TFTR D-T Experiment written by K. L. Wong and published by . This book was released on 1996 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Preparations for Deuterium Tritium Experiments on the Tokamak Fusion Test Reactor by : H. G. Adler
Download or read book Preparations for Deuterium Tritium Experiments on the Tokamak Fusion Test Reactor written by H. G. Adler and published by . This book was released on 1994 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of High-n Instabilities Including Alpha-particle Effects in BPX and TFTR. by :
Download or read book Comparison of High-n Instabilities Including Alpha-particle Effects in BPX and TFTR. written by and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three distinct types of high toroidal mode number instabilities are obtained from a comprehensive kinetic calculation, using as input transport code results from the analysis of a recent design for the Burning Plasma Experiment (BPX). These instabilities are: the collisionless trapped-electron ion-temperature-gradient mode, the magnetohydrodynamic ballooning mode, and a high toroidal mode number version of the toroidicity-induced Alfven eigenmode or gap'' mode. The dependence of the instability linear eigenfrequencies on minor radius, beta, and toroidal mode number are investigated, along with the effects of hot alpha particles. Relative quasilinear fluxes of particles and energy for each species are also obtained. In addition, the beta dependence of the magnetohydrodynamic ballooning mode is investigated for a case using as input the results of a transport code calculation for the Tokamak Fusion Test Reactor (TFTR) in an extrapolation to a deuterium-tritium mixture. The effects of alpha particles and the relative quasilinear fluxes are also investigated for this case. 13 refs., 13 figs., 4 tabs.
Author :National Academies of Sciences Engineering and Medicine Publisher : ISBN 13 :9780309677608 Total Pages :291 pages Book Rating :4.6/5 (776 download)
Book Synopsis Plasma Science by : National Academies of Sciences Engineering and Medicine
Download or read book Plasma Science written by National Academies of Sciences Engineering and Medicine and published by . This book was released on 2021-02-28 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma Science and Engineering transforms fundamental scientific research into powerful societal applications, from materials processing and healthcare to forecasting space weather. Plasma Science: Enabling Technology, Sustainability, Security and Exploration discusses the importance of plasma research, identifies important grand challenges for the next decade, and makes recommendations on funding and workforce. This publication will help federal agencies, policymakers, and academic leadership understand the importance of plasma research and make informed decisions about plasma science funding, workforce, and research directions.
Book Synopsis Physics of High Performance Deuterium-tritium Plasmas in TFTR. by : K. M. McGuire
Download or read book Physics of High Performance Deuterium-tritium Plasmas in TFTR. written by K. M. McGuire and published by . This book was released on 1996 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Concept pensioen- en onderstandsverbond voor werklieden en hunne weduwen aan leden der commissiën van advies ... van het Nederlandsch werklieden -verbond "Patrimonium." by :
Download or read book Concept pensioen- en onderstandsverbond voor werklieden en hunne weduwen aan leden der commissiën van advies ... van het Nederlandsch werklieden -verbond "Patrimonium." written by and published by . This book was released on 1881 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physics of High Performance Dueterium-Tritium Plasmas in TFTR. by :
Download or read book Physics of High Performance Dueterium-Tritium Plasmas in TFTR. written by and published by . This book was released on 1996 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past two years, deuterium-tritium (D-T) plasmas in the Tokamak Fusion Test Reactor (TFTR) have been used to study fusion power production, isotope effects associated with tritium fueling, and alpha-particle physics in several operational regimes. The peak fusion power has been increased to 10.7 MW in the supershot mode through the use of increased plasma current and toroidal magnetic field and extensive lithium wall conditioning. The high-internal-inductance (high -li) regime in TFTR has been extended in plasma current and has achieved 8.7 MW of fusion power. Studies of the effects of tritium on confinement have now been carried out in ohmic, NBI- and ICRF-heated L-mode and reversed-shear plasmas. In general, there is an enhancement in confinement time in D-T plasmas which is most pronounced in supershot and high-li discharges, weaker in L-mode plasmas with NBI and ICRF heating and smaller still in ohmic plasmas. In reversed-shear discharges with sufficient deuterium-NBI heating power, internal transport barriers have been observed to form, leading to enhanced confinement. Large decreases in the ion heat conductivity and particle transport are inferred within the transport barrier. It appears that higher heating power is required to trigger the formation of a transport barrier with D-T NBI and the isotope effect on energy confinement is nearly absent in these enhanced reverse-shear plasmas. Many alpha-particle physics issues have been studied in the various operating regimes including confinement of the alpha particles, their redistribution by sawteeth, and their loss due to MHD instabilities with low toroidal mode numbers. In weak-shear plasmas, alpha-particle destabilization of a toroidal Alfven eigenmode has been observed.
Book Synopsis ITER Alpha Particle Diagnostics Using Knock-on Ion Tails by :
Download or read book ITER Alpha Particle Diagnostics Using Knock-on Ion Tails written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alpha particles will play a critical role in the physics and successful operation of ITER. Achieving fusion ignition requires that the[alpha] particles created by deuterium-tritium (D-T) reactions deposit a large fraction of their energy in the reacting plasma before they are lost. Toroidal field ripple can localize any alpha particle losses and cause first wall damage. We have proposed a new method of measuring the fast confined[alpha]-particle distribution in a reacting plasma. The same elastic collisions that transfer the alpha energy to the D-T plasma ions and allow fusion ignition will also create a high energy tail on the deuterium and tritium ion energy distributions. Some of these energetic tail ions will undergo fusion reactions with the background plasma producing neutrons whose energy is increased significantly above 14 MeV due to the kinetic energy of the reacting ions. Measurement of this high energy tail on the D-T neutron distribution as a function of plasma minor radius would provide information on the alpha density profile with a time response equal to the ion slowing-down time. Although this technique may provide only limited information on the[alpha]-particle energy distribution, experimental studies of fast ions on existing tokamaks have shown that the observed slowing-down is essentially classical. Hence the[alpha]-energy distribution is expected to be classical except in situations where the[alpha]-confinement is poor. The confinement of[alpha]'s can be affected by ripple losses and a number of instabilities. Toroidal field ripple can cause both prompt orbit losses and stochastic ripple diffusion losses. Magnetohydrodynamic activity, including fishbone instabilities, toroidal Alfven eigenmodes, and sawtooth oscillations, may also affect alpha confinement. The diagnostic proposed here, by monitoring the confined alpha population, can provide valuable information on the confinement of fast alphas in a reacting plasma.
