Download or read book Optical Imaging Diagnostics for Fusion Plasmas written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Imaging diagnostics are used for spatially--and temporally--resolved quantitative measurements of plasma properties such as the ionization particle source, particle and energy loss, and impurity radiation in magnetically confined fusion plasmas. Diagnostics equipped with multi-element solid-state detectors (often with image intensifiers) are well suited to the environment of large fusion machines with high magnetic field and x-ray and neutron fluxes. We have both conventional (16msframe) and highspeed video cameras to measure neutral deuterium H/sub .cap alpha./ (6563 Å) emissions from fusion plasmas. Continuous high-speed measurements are made with video cameras operating at 0.1 to 0.5 msframe; gated cameras provide snapshots of 10 to 100 .mu.s during each 16-ms video frame. Digital data acquisition and absolute intensity calibrations of the cameras enable detailed quantitative source measurements: these are extremely important in determining the particle balance of the plasma. In a liner confinement device, radial transport can be determined from the total particle balance. In a toroidal confinement device, the details of particle recycling can be determined. Optical imaging in other regions of the spectrum are also important, particularly for the diverter region of large tokamaks. Absolutely calibrated infrared cameras have been used to image to temperature changes in the wall and thereby determine the heat flux. Absolutely calibrated imaging ultraviolet spectrometers measure impurity concentrations; both spatial and spectral imaging instruments are employed. Representative data from each of these diagnostic systems will be presented. 16 refs., 8 figs.
Download or read book Millimeter wave Imaging Technology Advancements for Plasma Diagnostics Applications written by Xiangyu Kong and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To realize fusion plant, the very first step is to understand the fundamental physics of materials under fusion conditions, i.e. to understand fusion plasmas. Our research group, Plasma Diagnostics Group, focuses on developing advanced tools for physicists to extract as much information as possible from fusion plasmas at millions degrees. The Electron Cyclotron Emission Imaging (ECEI) diagnostics is a very useful tool invented in this group to study fusion plasma electron temperature and it fluctuations. This dissertation presents millimeter wave imaging technology advances recently developed in this group to improve the ECEI system. New technologies made it more powerful to image and visualize magneto-hydrodynamics (MHD) activities and micro-turbulence in fusion plasmas.Topics of particular emphasis start from development of miniaturized elliptical substrate lens array. This novel substrate lens array replaces the previous generation substrate lens, hyper-hemispherical substrate lens, in terms of geometry. From the optical performance perspective, this substitution not only significantly simplifies the optical system with improved optical coupling, but also enhances the RF/LO coupling efficiency. By the benefit of the mini lens focusing properties, a wideband dual-dipole antenna array is carefully designed and developed. The new antenna array is optimized simultaneously for receiving both RF and LO, with sharp radiation patterns, low side-lobe levels, and less crosstalk between adjacent antennas. In addition, a high frequency antenna is also developed, which extends the frequency limit from 145 GHz to 220 GHz. This type of antenna will be used on high field operation tokamaks with toroidal fields in excess of 3 Tesla.Another important technology advance is so-called extended bandwidth double down-conversion electronics. This new electronics extends the instantaneous IF coverage from 2 to 9.2 GHz to 2 to 16.4 GHz. From the plasma point of view, it means that the instantaneous spatial coverage is doubled without compromising the spatial resolution. Other related technology advances, including frequency selective surfaces, beam splitters, ultra wideband baluns, pre-amplification scheme, are addressed in less detail. Finally, the Electron Cyclotron Emission (ECE) radiometer system on the Experimental Advanced Superconducting Tokamak (EAST) is discussed.
Download or read book Diagnostics for Fusion Experiments written by E. Sindoni and published by Elsevier. This book was released on 2013-10-22 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diagnostics for Fusion Experiments provides information pertinent to the fundamental aspects of plasma physics. This book presents the requirement in measuring electron and ion temperatures at the multi-key level. Organized into four parts encompassing 36 chapters, this book begins with an overview of the principles and methods by which analysis of the fast neutrals obtained by charge exchange in the plasma volume can be utilized to obtain the plasma ion temperature. This text then examines the use of active particle beam systems in plasma diagnostics. Other chapters consider the source function for production of fast neutrals in Tokamak plasma. This book discusses as well the special diagnostic needs of mirror machines, with focus on diagnostics involving the higher-power neutral beams used with them. The final chapter deals with the standard mirror fission-fusion hybrid, tandem mirror, and the field-reversed mirror. This book is a valuable resource for experimental physicists and research workers.
Download or read book Advanced Diagnostics for Magnetic and Inertial Fusion written by Peter E. Stott and published by Springer Science & Business Media. This book was released on 2002-07-31 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Conference on Advanced Diagnostics for Magnetic and Inertial Fusion, held September 3-7, 2001 at Villa Monastero, Varenna, Italy. This volume focuses on future diagnostic requirements for fusion energy research emphasizing advanced diagnostics, new techniques and areas where further progress is required.
Download or read book Plasma and Fusion Science written by B. Raneesh and published by CRC Press. This book was released on 2018-01-03 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this new book, an interdisciplinary and international team of experts provides an exploration of the emerging plasma science that is poised to make the plasma technology a reality in the manufacturing sector. The research presented here will stimulate new ideas, methods, and applications in the field of plasma science and nanotechnology. Plasma technology applications are being developed that could impact the global market for power, electronics, mineral, and other fuel commodities. Currently, plasma science is described as a revolutionary discipline in terms of its possible impact on industrial applications. It offers potential solutions to many problems using emerging techniques. In this book the authors provide a broad overview of recent trends in field plasma science and nanotechnology. Divided into several parts, Plasma and Fusion Science: From Fundamental Research to Technological Applications explores some basic plasma applications and research, space and atmospheric plasma, nuclear fusion, and laser plasma and industrial applications of plasma. A wide variety of cutting-edge topics are covered, including: • basic plasma physics • computer modeling for plasma • exotic plasma (including dusty plasma) • industrial plasma applications • laser plasma • nuclear fusion technology • plasma diagnostics • plasma processing • pulsed power • space astrophysical plasma • plasma and nanotechnology Pointing to current and possible future developments in plasma science and technology, the diverse research presented here will be valuable for researchers, scientists, industry professionals, and others involved in the revolutionary field of plasma and fusion science.
Download or read book All Sky Imaging System for Atmospheric Plasma Diagnostics written by and published by . This book was released on 2004 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mobile optical observatory was established at the Plasma Science and Fusion Center on campus at MIT. It consists of an All Sky Imaging System (ASIS) and a pick-up truck with a camper-like-box. The major components of ASIS includes: (1) all-sky lenses with different fields of view (FoV) i.e., 24mm/F4.O fish-eye -180 deg. FoV, 45mm/F2.8 - 76 deg. FoV, and 210mm I F4.O - 19 deg. FoV, (2) narrow-band interference spectral filters, (3) 2- and 3-log neutral density filters, (4) image intensifier unit, (5) cooled CCD camera, and (6) data acquisition and remote controlling systems. ASIS is a powerful instruments for atmospheric plasma diagnostics. For example, in radio wave injection and chemical release experiments, rich information can be deduced from the measured airglow. The images of highly structured plasma clouds in chemical release experiments will help identify the source mechanisms, producing plasma density irregularities. Measured intensity of airglow emissions (at 630.0 nm) in radio wave injection experiments will show plasma density depletion. Emissions may also be based on estimating the fluxes of generated energetic particles (at 427.8 rim in E region and at 630.0 rim in F region), neutral wind (at 557.7 rim), and plasma drifts (at 777.4 rim).
Download or read book Microwave Imaging Diagnostics for Plasma Fluctuation Studies written by Jian Wang and published by . This book was released on 2005 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Topics in Plasma Diagnostics written by I. Podgornyi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume is essentially a qualitative survey of modern trends in the diagnostics of high-temperature plasmas, with particular orientation toward laboratory plasmas of interest in connection with research in controlled thermonuclear fusion. Among the broad topics considered are probe diagnostics, optical methods (including the use of lasers and holography), microwave diagnostics, and diagnostics with particle beams. Having infor mation on these methods available in compact form and in one place, as is the case in the present volume, should make it pos sible to evaluate different diagnostic approaches to specific prob lems. The volume will be useful as an introduction for advanced students making their first contact with experimental plasma physics and for physicists and engineers who are entering the field and desire a rapid survey of principles and modern trends in the diagnostics of high-temperature plasmas. v Foreword to the American Edition The material in this book is based on lectures given at Mos cow State University. It is intended to acquaint the reader with the basic aspects of plasma diagnostics and contains information re quired for the experimental physicist who wishes to carry out straightforward measurements of laboratory plasmas. It will be evident that in choosing the material we have been guided pri marily by the scientific interests of the author, and the great bulk of the material is based on work carried out in the USSR.
Download or read book Plasma Diagnostics written by Orlando Auciello and published by Academic Press. This book was released on 2013-10-22 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma Diagnostics, Volume 1: Discharge Parameters and Chemistry covers seven chapters on the important diagnostic techniques for plasmas and details their use in particular applications. The book discusses optical diagnostic techniques for low pressure plasmas and plasma processing; plasma diagnostics for electrical discharge light sources; as well as Langmuir probes. The text also describes the mass spectroscopy of plasmas, microwave diagnostics, paramagnetic resonance diagnostics, and diagnostics in thermal plasma processing. Electrical engineers, nuclear engineers, microwave engineers, chemists, and technical personnel in universities, industry, and national laboratories will find the book invaluable.
Download or read book Plasma Diagnostics written by Orlando Auciello and published by Academic Press. This book was released on 2013-10-22 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmas and their interaction with materials have become subjects of major interest because of their importance in modern forefront technologies such as microelectronics, fusion energy, and space. Plasmas are used in microelectronics to process semiconductors (etching of patterns for microcircuits, plasma-induced deposition of thin films, etc.); plasmas produce deleterious erosion effects on surfaces of materials used for fusion devices and spaceships exposed to the low earth environment.Diagnostics of plasmas and materials exposed to them are fundamental to the understanding of the physical and chemical phenomena involved. Plasma Diagnostics provides a comprehensive treatment of the subject.short version, TJE_Plasmas and their interaction with materials have become subjects of major interest because of their importance in modern forefront technologies such as microelectronics, fusion energy, and space. Diagnostics of plasmas and materials exposed to them are fundamental to the understanding of the physical and chemical phenomena involved. Plasma Diagnostics provides a comprehensive treatment of the subject.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 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 1978 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasma Visualization Diagnostics for the KSTAR Tokamak written by Tianran Liang and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To understand the fundamental physical phenomena of the hot confinement plasma located inside of the controlled fusion experimental devices called Tokamaks, good spatial and temporal measurements of the electron temperature and density fluctuations are needed. Two powerful plasma visualization diagnostics, Electron Cyclotron Emission Imaging (ECEI) and Microwave Imaging Reflectometry (MIR), have been developed by the plasma diagnostic group in University of California at Davis. Unlike the conventional 1-D diagnostic methods, they are able to provide 2-D high resolution image of the electron temperature and density fluctuations.This dissertation will focus on the development of the ECEI system customized for the KSTAR tokamak in Korea. The physics principle of the electron cyclotron radiation in fusion plasmas is firstly reviewed, followed by a description of the system architecture of the ECEI diagnostic. Technology advancements in a variety of the system components are discussed, including the miniature elliptical substrate lenses, dual-dipole antennas and mixers array, quasi-optical planar filters, double down-conversion heterodyne electronics, and local oscillator power coupling. Particular emphasis is given to the design methods and major innovations in the advanced optical coupling system for the KSTAR ECEI. This includes step-by-step descriptions on the imaging lens design analysis, as well as the realization of the advanced imaging features, such as independent zoom and focus control. The development of the frequency selective surface (FSS) notch filter is also discussed in detail. The FSS's basic configurations, design principles, and the numerical design tools will be discussed. The previous notch filter designs as well as the new generation multilayer configuration, which brings significant performance improvements, will be summarized. The laboratory testing platform and the fabrication considerations will also be presented. The KSTAR ECEI diagnostic, fabricated and installed in 2010, represents a new benchmark in imaging diagnostic system in terms of plasma coverage, resolution, and imaging flexibility. It also represents a major step forward in the standardization of many ECEI system components, such as dual detector array with mini lens and planar quasi-optical filter components.
Download or read book Fusion Plasma Diagnostics with mm Waves written by Hans-Jürgen Hartfuß and published by John Wiley & Sons. This book was released on 2013-08-22 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap in the literature, this introduction to the topic covers the physics of the standard microwave diagnostics established on modern fusion experiments, and the necessary technological background from the field of microwave engineering. Written by well-known mm-wave diagnosticians in the field of fusion physics, the textbook includes such major diagnostic techniques as electron cyclotron emission, interferometry, reflectometry, polarimetry, and scattering.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Optical Diagnostics of Plasma related Phenomena and Applications written by Yupan Bao and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical diagnostics techniques based on coded imaging were developed and applied for plasma-related phenomena and applications. The signal of interest is first encoded with a sinusoid pattern either by structured laser illumination or implement of a diffractive optical element, such as a grating, along the optical path of the signal. The coded signal will then be extracted from the raw data by a lock-in based algorithm, such as frequency recognition algorithm for multiple exposures (FRAME). Two types of non-thermal plasma sources, i.e., gliding arc discharges and nanosecond pulsed discharges, were investigated. Volumetric information of molecular distributions around a gliding arc was captured using laser-induced fluorescence with structured illumination and FRAME. Laser scattering imaging during the formation of a nanosecond pulsed discharge on a at methane-air flame was extracted from luminous plasma emission using structured laser illumination. Furthermore, a technique named periodic shadowing was applied for streak camera measurements, where both higher temporal contrast and effective dynamic range were achieved. The gliding arc plasma discharge was also applied in an industrial prototype burner as plasma-assisted combustion has been proven to be a promising technique to increase energy efficiency as well as reduce environmentally harmful emission. With the help of 0.1% additional energy, the lean blow-out limit of a hundred kilowatt burner was extended from a global equivalence ratio of 0.47 to 0.45.
Download or read book Fusion Technology 1996 written by C. Varandas and published by Elsevier. This book was released on 2012-12-02 with total page 1057 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of these proceedings was to provide a platform for the exchange of information on the design, construction and operation of fusion experiments. The technology which is being developed for the next step devices and fusion reactors was also covered.
