Experimental and Theoretical Study of Particle Transport in the TCV Tokamak PDF Download

Author: Emiliano Fable
Publisher:
ISBN:
Category :
Languages : en
Pages : 143

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Author: Francesco Sciortino
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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As a whole, this work provides one of the highest-fidelity assessments of cross-field impurity transport in tokamaks, offering the means to extend comparisons between theory and experiments in the particle transport channel.

Author: Leslie Colin Woods
Publisher: John Wiley & Sons
ISBN: 3527607269
Category : Science
Languages : en
Pages : 252

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Book Description
In this new approach for a consistent transport theory in nuclear fusion processes Leslie Woods draws on over 40 years of fusion research to directly compare theoretical findings with experimental results, while taking into account recently discovered phenomena. This is thus the first book to find theoretical explanations to the sometimes-puzzling tokamak observations. Following a look at the quest for fusion power, the author goes on to examine tokamak magnetic fields and energy losses, as well as plasma flow and loop voltage. There is also a discussion of the technical constraints on the recently announced ITER design.

Author: R.B. White
Publisher: Elsevier
ISBN: 1483293262
Category : Science
Languages : en
Pages : 374

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Book Description
This is a graduate textbook on tokamak physics, designed to provide a basic introduction to plasma equilibrium, particle orbits, transport, and those ideal and resistive magnetohydrodynamic instabilities which dominate the behavior of a tokamak discharge, and to develop the mathematical methods necessary for their theoretical analysis.

Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 782

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 3

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Studies of local multispecies thermal particle and energy transport in L-mode and supershot deuterium plasmas have been performed on the Tokamak Fusion Test Reactor (TFTR). These studies were undertaken to help gain insight into the anomalous transport properties of the bulk plasma. Such experimental and theoretical studies are valuable for ITER: the relationship of local helium ash and metallic particle transport to local energy transport will be determining factors in plasma current, helium pumping, and divertor material requirements. In addition, differences between electron and ion transport will have important implications for plasma fueling scenarios. Here, attention has been focused on supershots and L-Modes of the same toroidal field, plasma current, neutral beam heating power.

Author: Brian LaBombard
Publisher:
ISBN:
Category :
Languages : en
Pages : 20

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Particle transport in the edge plasma and scrape-off layer will play a key role in the performance and operation of a tokamak fusion reactor: setting the width of the scrape-off layer density profile and its impurity screening characteristics, regulating the energetic particle fluxes onto first-wall components and associated impurity generation rates, and determining the effectiveness of the divertor in receiving particle exhaust and controlling neutral pressures in the main-chamber. The processes which govern particle transport involve plasma turbulence, phenomena which can not yet be reliably computed from a first-principles numerical simulation. Thus, in order to project to a reactor-scale experiment, such as ITER, one must first develop an understanding of particle transport phenomena based on experimental measurements in existing plasma fusion devices. Over the past few years of research, a number of fundamental advances in the understanding of the cross-field particle transport physics have occurred, replacing crude, incorrect, and often misleading transport models such as the "constant diffusion coefficient" model with a more appropriate description of the phenomenon. It should be noted that this description applies to transport processes in the absence of ELM phenomenon, i.e., physics underlying the "background" plasma state. In this letter, we first review the experimental support for this understanding which is based extensively on data from L-mode discharges and from H-mode discharges at time intervals without ELMs. We then comment on its implications for ITER.

Author: Conrad Christopher Klepper
Publisher:
ISBN:
Category : Particles (Nuclear physics)
Languages : en
Pages : 390

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Author: Alexander Mazurenko
Publisher:
ISBN:
Category :
Languages : en
Pages : 38

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The Quasi-Coherent (QC) mode, observed at high densities during enhanced D-alpha (EDA) H-Mode in the Alcator C-Mod tokamak, has been studied with a phase contrast imaging (PCI) diagnostic. The QC mode is believed to be responsible for the reduced particle (and impurity) confinement during H-mode operation, so as to allow quasi-steady state operation of the tokamak. It is proposed that the QC mode is a form of resistive ballooning mode known as the resistive X-point mode. The measured dispersion and mode stability are found to be in good agreement with the resistive X-point mode predicted by the BOUT (Boundary Plasma Turbulence) code.

Author: J.W. Connor
Publisher: American Institute of Physics
ISBN:
Category : Science
Languages : en
Pages : 472

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Book Description
The Joint Varenna-Lausanne International Workshop on Theory of Fusion Plasmas takes place every other year in a place particularly favourable for informal and in depth discussions. Invited and contributed papers present state-of-the-art researches in theoretical plasma physics, covering all domains relevant to fusion plasmas. This workshop always allows a fruitful mix of experienced researchers and students.