An Improved Algorithm for Magnetic Profile Reconstruction in a Reversed Field Pinch Machine PDF Download
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Author: Emma Harris
Publisher:
ISBN:
Category : Fusion
Languages : en
Pages : 290
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Book Description
RFX is a plasma physics experiment which aims to provide substantial progress in understanding the properties of the reversed field pinch (RFP) configuration in confining high b plasmas. With European funding, a large toroidal device was built in Padua, Northern Italy. Through a collaboration with Istituto Gas Ionizzati in Italy, University College Cork has responsibility for the implementation of a multichord polarimeter which will, for the first time, provide information on the internal magnetic field configuration in RFX. A single-chord polarimeter has been successfully implemented on RFX, as a pilot experiment, and work is currently underway for the completion of the six-chord diagnostic. This thesis describes the most recent work undertaken in preparation for the implementation of the six-chord polarimeter. A polarimetric diagnostic produces a measurement of the Faraday rotation angle which is proportional to the line integral of the product of the electron density and the local magnetic field profile along the line of the probing beam. Therefore, to obtain the poloidal magnetic field profile from the polarimetric measurement, an inversion process is needed to transform the integral values to the local values. This thesis presents an optimised method for reconstructing the poloidal magnetic field profile from a six-chord measurement of the Faraday rotation angle. The thesis outlines the various improvements which have been made to the previous inversion algorithm. The new algorithm has been tested for a variety of plasma conditions and the results are presented and discussed in the thesis. The effects of Faraday rotation measurement errors on the reconstruction capability of the magnetic field profile are also considered. Implementation of the new inversion algorithm will provide more accurate information on the magnetic configuration of RFX than would previously have been possible.
Author: Emma Harris
Publisher:
ISBN:
Category : Fusion
Languages : en
Pages : 290
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Book Description
RFX is a plasma physics experiment which aims to provide substantial progress in understanding the properties of the reversed field pinch (RFP) configuration in confining high b plasmas. With European funding, a large toroidal device was built in Padua, Northern Italy. Through a collaboration with Istituto Gas Ionizzati in Italy, University College Cork has responsibility for the implementation of a multichord polarimeter which will, for the first time, provide information on the internal magnetic field configuration in RFX. A single-chord polarimeter has been successfully implemented on RFX, as a pilot experiment, and work is currently underway for the completion of the six-chord diagnostic. This thesis describes the most recent work undertaken in preparation for the implementation of the six-chord polarimeter. A polarimetric diagnostic produces a measurement of the Faraday rotation angle which is proportional to the line integral of the product of the electron density and the local magnetic field profile along the line of the probing beam. Therefore, to obtain the poloidal magnetic field profile from the polarimetric measurement, an inversion process is needed to transform the integral values to the local values. This thesis presents an optimised method for reconstructing the poloidal magnetic field profile from a six-chord measurement of the Faraday rotation angle. The thesis outlines the various improvements which have been made to the previous inversion algorithm. The new algorithm has been tested for a variety of plasma conditions and the results are presented and discussed in the thesis. The effects of Faraday rotation measurement errors on the reconstruction capability of the magnetic field profile are also considered. Implementation of the new inversion algorithm will provide more accurate information on the magnetic configuration of RFX than would previously have been possible.
Author: J. R. Drake
Publisher:
ISBN:
Category :
Languages : en
Pages : 54
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Book Description
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 730
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 300
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Book Description
Author: Lisa Tauxe
Publisher: Univ of California Press
ISBN: 0520260317
Category : Science
Languages : en
Pages : 505
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Book Description
"This book by Lisa Tauxe and others is a marvelous tool for education and research in Paleomagnetism. Many students in the U.S. and around the world will welcome this publication, which was previously only available via the Internet. Professor Tauxe has performed a service for teaching and research that is utterly unique."—Neil D. Opdyke, University of Florida
Author: C.M. Braams
Publisher: CRC Press
ISBN: 9781420033786
Category : Science
Languages : en
Pages : 352
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Book Description
Fusion research started over half a century ago. Although the task remains unfinished, the end of the road could be in sight if society makes the right decisions. Nuclear Fusion: Half a Century of Magnetic Confinement Fusion Research is a careful, scholarly account of the course of fusion energy research over the past fifty years. The authors outline the different paths followed by fusion research from initial ignorance to present understanding. They explore why a particular scheme would not work and why it was more profitable to concentrate on the mainstream tokamak development. The book features descriptive sections, in-depth explanations of certain physical and technical issues, scientific terms, and an extensive glossary that explains relevant abbreviations and acronyms.
Author: National Academies of Sciences Engineering and Medicine
Publisher:
ISBN: 9780309677608
Category :
Languages : en
Pages : 291
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Book Description
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.
Author: Kenro Miyamoto
Publisher: Taylor & Francis
ISBN: 1584887109
Category : Science
Languages : en
Pages : 393
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Book Description
Resulting from ongoing, international research into fusion processes, the International Tokamak Experimental Reactor (ITER) is a major step in the quest for a new energy source.The first graduate-level text to cover the details of ITER, Controlled Fusion and Plasma Physics introduces various aspects and issues of recent fusion research activ
Author: Masahiro Wakatani
Publisher: Oxford University Press, USA
ISBN: 9780195078312
Category : Language Arts & Disciplines
Languages : en
Pages : 462
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Book Description
This monograph describes plasma physics for magnetic confinement of high temperature plasmas in nonaxisymmetric toroidal magnetic fields or stellarators. The techniques are aimed at controlling nuclear fusion for continuous energy production. While the focus is on the nonaxisymmetric toroidal field, or heliotron, developed at Kyoto University, the physics applies equally to other stellarators and axisymmetric tokamaks. The author covers all aspects of magnetic confinement, formation of magnetic surfaces, magnetohydrodynamic equilibrium and stability, single charged particle confinement, neoclassical transport and plasma heating. He also reviews recent experiments and the prospects for the next generation of devices.
Author: Deepak K. Kalaskar
Publisher: UCL Press
ISBN: 1910634379
Category : Medical
Languages : en
Pages : 491
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Book Description
Written by experts from London’s renowned Royal Free Hospital, Textbook of Plastic and Reconstructive Surgery offers a comprehensive overview of the vast topic of reconstructive plastic surgery and its various subspecialties for introductory plastic surgery and surgical science courses. The book comprises five sections covering the fundamental principles of plastic surgery, cancer, burns and trauma, paediatric plastic surgery and aesthetic surgery, and covers the breadth of knowledge that students need to further their career in this exciting field. Additional coverage of areas in which reconstructive surgery techniques are called upon includes abdominal wall reconstruction, ear reconstruction and genital reconstruction. A chapter on aesthetic surgery includes facial aesthetic surgery and blepharoplasty, aesthetic breast surgery, body contouring and the evolution of hair transplantation.The broad scope of this volume and attention to often neglected specialisms such as military plastic surgery make this a unique contribution to the field. Heavily illustrated throughout, Textbook of Plastic and Reconstructive Surgery is essential reading for anyone interested in furthering their knowledge of this exciting field. This book was produced as part of JISC's Institution as e-Textbook Publisher project. Find out more at https://www.jisc.ac.uk/rd/projects/institution-as-e-textbook-publisher
