Digitally Controlled Phased Array Transmitter Systems For Fusion Plasma Imaging Radar Reflectometric Diagnostics

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Digitally Controlled Phased Array Transmitter Systems for Fusion Plasma Imaging Radar Reflectometric Diagnostics

Author : Meijiao Li
Publisher :
ISBN 13 : 9781369796506
Total Pages : pages
Book Rating : 4.7/5 (965 download)

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Book Synopsis Digitally Controlled Phased Array Transmitter Systems for Fusion Plasma Imaging Radar Reflectometric Diagnostics by : Meijiao Li

Download or read book Digitally Controlled Phased Array Transmitter Systems for Fusion Plasma Imaging Radar Reflectometric Diagnostics written by Meijiao Li and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Phased Antenna Array (PAA) technology with its compact structure, high gain, low side-lobes, and electronic beam steering and shaping capability is desirable for both military and civilian applications. Due to the dramatic growth of commercial demands and technology advances, PAA have begun to play an increased role and have achieved significant development in many new applications in civilian areas. In this dissertation, PAA technology has been developed for a specific application – Fusion Plasma Imaging Radar Reflectometric Diagnostics. Fusion energy with its self-sustainability and environmentally friendly nature stands out to be the clean and inexhaustible energy that humanity has dreamed about for a long time. Plasma Imaging Radar Reflectometric Diagnostics is a technology to remotely detect the plasma density fluctuations in fusion plasmas which helps scientists to better understand fusion and make the clean energy available sooner. In this dissertation, a Phased Array Transmitter System based on digitally controlled phase shifter technology, a wide band double-sided print bow-tie antenna, and a 16-element V-band array have been developed. Both the transmitter system and the V-band antenna array were designed, fabricated, and measured. Electromagnetics simulations were performed using both CST STUDIO SUITE® and HFSS. A low-cost, 28 GHz Phased Array Transmitter System with digitally controlled beam forming technology has been demonstrated. The 8-element PAA transmitter systems are fabricated on a low-cost PCB substrate to avoid the extra loss caused by connection of different circuit pieces and for easier integration and simpler circuit structure. By using wideband, double-side printed bow-tie antennas, and digitally controlled phase shifters together with frequency up-converter components, the systems can provide more than 40 degrees beam scanning ranges with high resolution of 1 degree, which satisfies the requirements for the microwave imaging reflectometer (MIR) system proposed for the NSTX-U fusion device at Princeton Plasma Physics Laboratory. The technology is scalable to larger arrays and higher frequencies and should have a broad range of applications.In the wide band V-band antenna design, a 46 GHz to 76 GHz double-sided printed bow-tie antenna with an elliptical lens was designed, implemented using low cost RO4003C substrate, and experimentally characterized. The antenna shows a gain of 16 dBi, and -15 dB side lobe ratio. In antenna array design, it is well known that a spacing of no more than a half wavelength between nearby antennas is desired to avoid grating lobe influence. As the dimensions of the designed antenna’s width are less than half of a wavelength (0.36 [lambda]), it is feasible to keep the space between each element in the array equal to half of a wavelength. Therefore, the designed antenna can also be used in antenna arrays or phased antenna array systems. To demonstrate the idea, a 16-element double-sided printed bow-tie array was designed, fabricated, and tested. The theoretical and measured far-field patterns agree well. With its compact structure, high gain, low side-lobes, and easy integration capability, it should be successfully applied to V-band (60 GHz) Phased Array Systems and will be specifically used for Plasma Imaging Radar Reflectometric Diagnostics applications.

RF MEMS Varactor-based True Time Delay Line Technology for Phased Antenna Array Systems

Author : Danqing Fu
Publisher :
ISBN 13 : 9781321608557
Total Pages : pages
Book Rating : 4.6/5 (85 download)

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Book Synopsis RF MEMS Varactor-based True Time Delay Line Technology for Phased Antenna Array Systems by : Danqing Fu

Download or read book RF MEMS Varactor-based True Time Delay Line Technology for Phased Antenna Array Systems written by Danqing Fu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last few decades, the demand for energy has increased dramatically. Eventually, the limited reserves of fossil fuels, especially oil and gas, will no longer be able to accommodate the ever increasing energy demand. Clean and inexhaustible energy has long been a dream for the human race. Fusion energy stands out among the possible candidates for its self-sustainability and environmentally friendly nature. To realize that on our planet, the tokamak (toroidal chamber with magnetic coils) [1], a doughnut shaped vacuum chamber which contains the high temperature plasma, has become the most successful device thus far as regards magnetic confinement fusion. However, the fusion plasma is at extremely high temperature, which makes direct physical measurements impossible; consequently millimeter-wave imaging becomes a desirable technique for plasma diagnostics. There are many millimeter wave plasma diagnostic tools, but two popular and successful approaches pioneered at UC Davis are Electron Cyclotron Emission Imaging (ECEI) [2] and Microwave Imaging Reflectometry (MIR) [3] [4]. Microwave Imaging Reflectometry (MIR) System is a radar technique used to infer the electron density characteristics by probing the density-dependent cutoff layer in plasmas. A phased Antenna Array is proposed to employ as an electronically controlled focusing and defocusing array, and function as an electronically controlled "lens". In this dissertation, the author focuses on the design of extended tuning range RF MEMS varactors, which can prevent the so-called "pull-in" effect of traditional MEMS structures. Consequently, the capacitance ratio could be increased dramatically and large phase delay (360 °) could be realized. Initially, the MEMS pull-in effect together with structures which could prevent the pull-in effect, and a comparison among them are introduced. Subsequently, the fixed-fixed beam's electromagnetic simulations in HFSS, mechanical simulations in CoventorWare, and optimization of the S parameters in ADS are presented. After that, a six layer micro-fabrication process is introduced, and fabrication problems and solutions are illustrated. The measurement results of a fixed-fixed beam are analyzed, and then a cantilever beam is designed to replace the fixed-fixed beam to solve the residual stress problem. Simulation results, fabrication processes, fabrication problems, solutions, and measurement results are then presented. Finally, analog phase delay which exceeds 360 ° is realized in both Q band and V band. In Q band, the measured insertion losses range from 5 dB to 9 dB in the intermediate-states and down-states, and only less than 2 dB in the up-states, and the measured return losses are better than 7 dB in all states. In addition, in V band, the measured insertion losses range from 9 dB to 12 dB in the intermediate-states and down-states, and only less than 2 dB in up-states, and the measured return losses are better than 9 dB in all states.

Microwave Diagnostics for Magnetic Fusion Devices

Author : Liubing Yu
Publisher :
ISBN 13 : 9781321024807
Total Pages : pages
Book Rating : 4.0/5 (248 download)

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Book Synopsis Microwave Diagnostics for Magnetic Fusion Devices by : Liubing Yu

Download or read book Microwave Diagnostics for Magnetic Fusion Devices written by Liubing Yu and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: To tackle the energy shortage problems that we are facing, many scientists are trying to achieve controlled fusion to provide clean and sustainable energy. Many large Tokamaks, which is the most promising device concept, have been built worldwide and three of them (DIII-D, NSTX, C-Mod) are currently in operation in the U.S. To understand the details of magnetic fusion plasma physics, a variety of microwave diagnostics are applied to measure the plasma properties from the millions of degrees plasma in a nonperturbative fashion. Our research group, the Plasma Diagnostics Group, under the Davis MM-Wave Research Center (DMRC), focuses on developing advanced microwave diagnostic tools. The Electron Cyclotron Emission Imaging (ECEI) diagnostic, a passive radiometric microwave diagnostic, is an extremely useful imaging tool invented in this group to study electron temperature and its fluctuations. The Microwave Imaging Reflectometry (MIR) technique is also another imaging tool pioneered in this group, and its purpose is to study electron density fluctuations using an imaging radar approach. Finally, the Far Infrared Tangential Interferometry/ Polarimetry (FIReTIP) system is a density and magnetic field diagnostic tool. This dissertation introduces the principles, structure, recent technology advances, and some physical studies concerning these three systems. The combined ECEI and MIR systems on the DIII-D (located at General Atomics in San Diego) provide simultaneous electron temperature and density fluctuation imaging at the same plasma volume. The ECEI system consists of two major parts: the optical and array system, which images and downconverts the millimeter wave ECE radiation, and the electronics, which detects the radiation power in each designed band. This dissertation concerns two recent upgrades made by our group: one is the use of the zero bias Schottky detectors in the IF electronics which has greatly decreased the noise level, and the other is the expanded radial coverage which doubles the radial view in the plasma. For the MIR system, the synthetic diagnostic modeling has guided the very successful optic and array design; some details concerning the transmitter, receiver, and electronics are presented. In this dissertation, several methods for the ECEI/MIR time calibration were conceived, applied, and compared; in addition, the ECEI and MIR systems are also time calibrated with respect to two other important diagnostics, the ECE radiometer and magnetic fluctuation diagnostic systems.Intense bursts of mm-wave emission with durations of 5-10 [mu]s have been observed on DIII-D by both ECE radiometer and ECEI systems during edge localized modes, Quiet H-mode (QH) modes, and the precursor before disruptions. Both the ECE radiometer system and the ECEI system employ heterodyne detection methods and have overlapping intermediate frequency (IF) bands. A new RF spectrometer, spanning this IF frequency range of approximately 2-10 GHz, has been installed on the DIII-D tokamak in order to more fully characterize the frequency, intensity, and localization of these bursts. Herein, the data for the H mode case and QH-mode case will be discussed and scrutinized in order to constrain the needed model to explain the bursts. As a trial model, the Cyclotron AutoResonance Maser (CARM) and Gyro-BWO models are proposed to explain these bursts, which require further theory, experimental, and simulation support. The multichannel FIReTIP system provides line-integrated plasma density and magnetic information from multiple viewing chords on the midplane of the NSTX device. Extremely wide bandwidth phase comparator electronics for the FIReTIP system were developed and installed on the NSTX device in 2009. This allows the system video bandwidth, previously limited to ~250 kHz, to extend out to ~500 kHz when operated as a simultaneous interferometer/polarimeter system and as high as 4 MHz when operated in an interferometry-only configuration. The new electronics provides simultaneous interferometer phase measurement data using two distinct phase comparator methods. The first is a digital fringe counter (FC) approach limited to a video bandwidth of ~500 kHz, while the second is an analog demodulator or in-phase and quadrature (IQ) approach that achieves the full 4 MHz video bandwidth. New algorithms have been developed to process the FIReTIP data for both regular (post-shot) and real-time density calculations, with reliability checks conducted using laser Thompson Scattering data where available.

Magnetic Fusion Technology

Author : Thomas J. Dolan
Publisher : Springer Science & Business Media
ISBN 13 : 1447155564
Total Pages : 816 pages
Book Rating : 4.4/5 (471 download)

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Book Synopsis Magnetic Fusion Technology by : Thomas J. Dolan

Download or read book Magnetic Fusion Technology written by Thomas J. Dolan and published by Springer Science & Business Media. This book was released on 2014-02-10 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic Fusion Technology describes the technologies that are required for successful development of nuclear fusion power plants using strong magnetic fields. These technologies include: • magnet systems, • plasma heating systems, • control systems, • energy conversion systems, • advanced materials development, • vacuum systems, • cryogenic systems, • plasma diagnostics, • safety systems, and • power plant design studies. Magnetic Fusion Technology will be useful to students and to specialists working in energy research.

Introduction to Plasma Physics and Controlled Fusion

Author : Francis F. Chen
Publisher : Springer Science & Business Media
ISBN 13 : 1475755953
Total Pages : 427 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Introduction to Plasma Physics and Controlled Fusion by : Francis F. Chen

Download or read book Introduction to Plasma Physics and Controlled Fusion written by Francis F. Chen and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: TO THE SECOND EDITION In the nine years since this book was first written, rapid progress has been made scientifically in nuclear fusion, space physics, and nonlinear plasma theory. At the same time, the energy shortage on the one hand and the exploration of Jupiter and Saturn on the other have increased the national awareness of the important applications of plasma physics to energy production and to the understanding of our space environment. In magnetic confinement fusion, this period has seen the attainment 13 of a Lawson number nTE of 2 x 10 cm -3 sec in the Alcator tokamaks at MIT; neutral-beam heating of the PL T tokamak at Princeton to KTi = 6. 5 keV; increase of average ß to 3%-5% in tokamaks at Oak Ridge and General Atomic; and the stabilization of mirror-confined plasmas at Livermore, together with injection of ion current to near field-reversal conditions in the 2XIIß device. Invention of the tandem mirror has given magnetic confinement a new and exciting dimension. New ideas have emerged, such as the compact torus, surface-field devices, and the EßT mirror-torus hybrid, and some old ideas, such as the stellarator and the reversed-field pinch, have been revived. Radiofrequency heat ing has become a new star with its promise of dc current drive. Perhaps most importantly, great progress has been made in the understanding of the MHD behavior of toroidal plasmas: tearing modes, magnetic Vll Vlll islands, and disruptions.

Electromagnetic Waves For Thermonuclear Fusion Research

Author : Ernesto Mazzucato
Publisher : World Scientific
ISBN 13 : 9814571822
Total Pages : 223 pages
Book Rating : 4.8/5 (145 download)

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Book Synopsis Electromagnetic Waves For Thermonuclear Fusion Research by : Ernesto Mazzucato

Download or read book Electromagnetic Waves For Thermonuclear Fusion Research written by Ernesto Mazzucato and published by World Scientific. This book was released on 2014-04-02 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: The science of magnetically confined plasmas covers the entire spectrum of physics from classical and relativistic electrodynamics to quantum mechanics. During the last sixty years of research, our initial primitive understanding of plasma physics has made impressive progress thanks to a variety of experiments — from tabletop devices with plasma temperatures of a few thousands of degrees and confinement times of less than 100 microseconds, to large tokamaks with plasma temperatures of up to five hundred million degrees and confinement times approaching one second. We discovered that plasma confinement is impaired by a variety of instabilities leading to turbulent processes with scales ranging from the plasma size to a few millimeters. Understanding these phenomena, which have slowed down progress towards a fusion reactor, requires the use of very sophisticated diagnostic tools, many of which employ electromagnetic waves.The primary objective of this book is to discuss the fundamental physics upon which the application of electromagnetic waves to the study of magnetically confined plasmas is based.

Advanced Sensors for Real-Time Monitoring Applications

Author : Olga Korostynska
Publisher : MDPI
ISBN 13 : 3036504265
Total Pages : 350 pages
Book Rating : 4.0/5 (365 download)

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Book Synopsis Advanced Sensors for Real-Time Monitoring Applications by : Olga Korostynska

Download or read book Advanced Sensors for Real-Time Monitoring Applications written by Olga Korostynska and published by MDPI. This book was released on 2021-03-09 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is impossible to imagine the modern world without sensors, or without real-time information about almost everything—from local temperature to material composition and health parameters. We sense, measure, and process data and act accordingly all the time. In fact, real-time monitoring and information is key to a successful business, an assistant in life-saving decisions that healthcare professionals make, and a tool in research that could revolutionize the future. To ensure that sensors address the rapidly developing needs of various areas of our lives and activities, scientists, researchers, manufacturers, and end-users have established an efficient dialogue so that the newest technological achievements in all aspects of real-time sensing can be implemented for the benefit of the wider community. This book documents some of the results of such a dialogue and reports on advances in sensors and sensor systems for existing and emerging real-time monitoring applications.

Plasma Physics

Author : Alexander Piel
Publisher : Springer
ISBN 13 : 3319634275
Total Pages : 473 pages
Book Rating : 4.3/5 (196 download)

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Book Synopsis Plasma Physics by : Alexander Piel

Download or read book Plasma Physics written by Alexander Piel and published by Springer. This book was released on 2017-09-07 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: The enlarged new edition of this textbook provides a comprehensive introduction to the basic processes in plasmas and demonstrates that the same fundamental concepts describe cold gas-discharge plasmas, space plasmas, and hot fusion plasmas. Starting from particle drifts in magnetic fields, the principles of magnetic confinement fusion are explained and compared with laser fusion. Collective processes are discussed in terms of plasma waves and instabilities. The concepts of plasma description by magnetohydrodynamics, kinetic theory, and particle simulation are stepwise introduced. Space charge effects in sheath regions, double layers and plasma diodes are given the necessary attention. The novel fundamental mechanisms of dusty plasmas are explored and integrated into the framework of conventional plasmas. The book concludes with a concise description of modern plasma discharges. Written by an internationally renowned researcher in experimental plasma physics, the text keeps the mathematical apparatus simple and emphasizes the underlying concepts. The guidelines of plasma physics are illustrated by a host of practical examples, preferentially from plasma diagnostics. There, Langmuir probe methods, laser interferometry, ionospheric sounding, Faraday rotation, and diagnostics of dusty plasmas are discussed. Though primarily addressing students in plasma physics, the book is easily accessible for researchers in neighboring disciplines, such as space science, astrophysics, material science, applied physics, and electrical engineering. This second edition has been thoroughly revised and contains substantially enlarged chapters on plasma diagnostics, dusty plasmas and plasma discharges. Probe techniques have been rearranged into basic theory and a host of practical examples for probe techniques in dc, rf, and space plasmas. New topics in dusty plasmas, such as plasma crystals, Yukawa balls, phase transitions and attractive forces have been adopted. The chapter on plasma discharges now contains a new section on conventional and high-power impulse magnetron sputtering. The recently discovered electrical asymmetry effect in capacitive rf-discharges is described. The text is based on an introductory course to plasma physics and advanced courses in plasma diagnostics, dusty plasmas, and plasma waves, which the author has taught at Kiel University for three decades. The pedagogical approach combines detailed explanations, a large number of illustrative figures, short summaries of the basics at the end of each chapter, and a selection of problems with detailed solutions.

Applications of Electromagnetic Waves

Author : Reza K. Amineh
Publisher : MDPI
ISBN 13 : 303936300X
Total Pages : 242 pages
Book Rating : 4.0/5 (393 download)

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Book Synopsis Applications of Electromagnetic Waves by : Reza K. Amineh

Download or read book Applications of Electromagnetic Waves written by Reza K. Amineh and published by MDPI. This book was released on 2021-01-20 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electromagnetic (EM) waves carry energy through propagation in space. This radiation associates with entangled electric and magnetic fields which must exist simultaneously. Although all EM waves travel at the speed of light in vacuum, they cover a wide range of frequencies called the EM spectrum. The various portions of the EM spectrum are referred to by various names based on their different attributes in the emission, transmission, and absorption of the corresponding waves and also based on their different practical applications. There are no certain boundaries separating these various portions, and the ranges tend to overlap. Overall, the EM spectrum, from the lowest to the highest frequency (longest to shortest wavelength) contains the following waves: radio frequency (RF), microwaves, millimeter waves, terahertz, infrared, visible light, ultraviolet, X-rays, and gamma rays. This Special Issue consists of sixteen papers covering a broad range of topics related to the applications of EM waves, from the design of filters and antennas for wireless communications to biomedical imaging and sensing and beyond.

Principles of Plasma Diagnostics

Author : I. H. Hutchinson
Publisher : Cambridge University Press
ISBN 13 : 9780521675741
Total Pages : 460 pages
Book Rating : 4.6/5 (757 download)

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Book Synopsis Principles of Plasma Diagnostics by : I. H. Hutchinson

Download or read book Principles of Plasma Diagnostics written by I. H. Hutchinson and published by Cambridge University Press. This book was released on 2005-07-14 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic introduction to the physics of plasma diagnostics measurements. It develops from first principles the concepts needed to plan, execute and interpret plasma measurements, making it a suitable book for graduate students and professionals with little plasma physics background. The book will also be a valuable reference for seasoned plasma physicists, both experimental and theoretical, as well as those with an interest in space and astrophysical applications. This second edition is thoroughly revised and updated, with new sections and chapters covering recent developments in the field.

Waves and Instabilities in Plasmas

Author : F. Cap
Publisher : Springer
ISBN 13 : 3709127009
Total Pages : 287 pages
Book Rating : 4.7/5 (91 download)

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Book Synopsis Waves and Instabilities in Plasmas by : F. Cap

Download or read book Waves and Instabilities in Plasmas written by F. Cap and published by Springer. This book was released on 2014-05-04 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the contents of a CISM Course on waves and instabilities in plasmas. For beginners and for advanced scientists a review is given on the state of knowledge in the field. Customers can obtain a broad survey.

Proximal Soil Sensing

Author : Raphael A. Viscarra Rossel
Publisher : Springer Science & Business Media
ISBN 13 : 9048188598
Total Pages : 440 pages
Book Rating : 4.0/5 (481 download)

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Book Synopsis Proximal Soil Sensing by : Raphael A. Viscarra Rossel

Download or read book Proximal Soil Sensing written by Raphael A. Viscarra Rossel and published by Springer Science & Business Media. This book was released on 2010-07-25 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on developments in Proximal Soil Sensing (PSS) and high resolution digital soil mapping. PSS has become a multidisciplinary area of study that aims to develop field-based techniques for collecting information on the soil from close by, or within, the soil. Amongst others, PSS involves the use of optical, geophysical, electrochemical, mathematical and statistical methods. This volume, suitable for undergraduate course material and postgraduate research, brings together ideas and examples from those developing and using proximal sensors and high resolution digital soil maps for applications such as precision agriculture, soil contamination, archaeology, peri-urban design and high land-value applications, where there is a particular need for high spatial resolution information. The book in particular covers soil sensor sampling, proximal soil sensor development and use, sensor calibrations, prediction methods for large data sets, applications of proximal soil sensing, and high-resolution digital soil mapping. Key themes: soil sensor sampling – soil sensor calibrations – spatial prediction methods – reflectance spectroscopy – electromagnetic induction and electrical resistivity – radar and gamma radiometrics – multi-sensor platforms – high resolution digital soil mapping - applications Raphael A. Viscarra Rossel is a scientist at the Commonwealth Scientific and Industrial Research Organisation (CSIRO) of Australia. Alex McBratney is Pro-Dean and Professor of Soil Science in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia. Budiman Minasny is a Senior Research Fellow in the Faculty of Agriculture Food & Natural Resources at the University of Sydney in Australia.

Dictionary of Acronyms and Technical Abbreviations

Author : Jakob Vlietstra
Publisher : Springer Science & Business Media
ISBN 13 : 1447102630
Total Pages : 703 pages
Book Rating : 4.4/5 (471 download)

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Book Synopsis Dictionary of Acronyms and Technical Abbreviations by : Jakob Vlietstra

Download or read book Dictionary of Acronyms and Technical Abbreviations written by Jakob Vlietstra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Dictionary covers information and communication technology (ICT), including hardware and software; information networks, including the Internet and the World Wide Web; automatic control; and ICT-related computer-aided fields. The Dictionary also lists abbreviated names of relevant organizations, conferences, symposia and workshops. This reference is important for all practitioners and users in the areas mentioned above, and those who consult or write technical material. This Second Edition contains 10,000 new entries, for a total of 33,000.

Tokamak Plasma

Author : B. B. Kadomtsev
Publisher : CRC Press
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Tokamak Plasma by : B. B. Kadomtsev

Download or read book Tokamak Plasma written by B. B. Kadomtsev and published by CRC Press. This book was released on 1992 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of tokamaks and their role in fusion reactors has been known for some time, but it is only now that plasma physicists have reached a clear understanding of the major principles governing the behaviour of confined high-temperature plasma. This book gives a timely and comprehensive survey of these concepts as well as a simple presentation of the basic physics involved. The topics discussed include: the theory of plasma equilibrium and its main instabilities, semi-empirical approaches for investigating heat transport, major plasma instabilities restricting the region of a tokamak's operating modes, a variety of plasma confinement regimes and other phenomena such as MARFE, magnetic bubbles and fishbones. The author proposes a new mechanism for anomalous heat transport connected with the idea of microscale 'island' structure. The information is presented in a clear and systematic way which will make this book interesting and useful to a broad spectrum of scientists and engineers involved in fusion reactor research. '...an excellent book - authoritative, broad and bristling with insight' Professor R D Hazeltine, The University of Texas at Austin.

Optical Metrology

Author : Kjell J. Gåsvik
Publisher : John Wiley & Sons
ISBN 13 : 0470846704
Total Pages : 372 pages
Book Rating : 4.4/5 (78 download)

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Book Synopsis Optical Metrology by : Kjell J. Gåsvik

Download or read book Optical Metrology written by Kjell J. Gåsvik and published by John Wiley & Sons. This book was released on 2003-04-11 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: New material on computerized optical processes, computerized ray tracing, and the fast Fourier transform, Bibre-Bragg sensors, and temporal phase unwrapping. * New introductory sections to all chapters. * Detailed discussion on lasers and laser principles, including an introduction to radiometry and photometry. * Thorough coverage of the CCD camera.

Handbook of Reflector Antennas and Feed Systems Volume III: Applications of Reflectors

Author : Sudhakar Rao
Publisher : Artech House
ISBN 13 : 1608075192
Total Pages : 462 pages
Book Rating : 4.6/5 (8 download)

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Book Synopsis Handbook of Reflector Antennas and Feed Systems Volume III: Applications of Reflectors by : Sudhakar Rao

Download or read book Handbook of Reflector Antennas and Feed Systems Volume III: Applications of Reflectors written by Sudhakar Rao and published by Artech House. This book was released on 2013-06-01 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first truly comprehensive and most up-to-date handbook available on modern reflector antennas and feed sources for diversified space and ground applications. There has never been such an all-encompassing reflector handbook in print, and no currently available title offers coverage of such recent research developments. The Handbook consists of three volumes. Volume III focuses on the range of reflector antenna applications, including space, terrestrial, and radar. The intent of this book volume is to provide practical applications and design information on reflector antennas used for several communications systems. This book covers recent developments of reflector antennas used for satellite communications, terrestrial communications, and remote sensing applications. New subjects are introduced for the first time, including satellite antennas, Terahertz antennas, PIM, multipaction, corona, deployable mesh reflector antennas, and mechanical aspects of reflector antennas. In addition, this book contains a separate topic on integrated feed assembly for reflector antennas covering analysis, design, fabrication, and test.

Digital and Analogue Instrumentation

Author : Nihal Kularatna
Publisher : IET
ISBN 13 : 0852969996
Total Pages : 677 pages
Book Rating : 4.8/5 (529 download)

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Book Synopsis Digital and Analogue Instrumentation by : Nihal Kularatna

Download or read book Digital and Analogue Instrumentation written by Nihal Kularatna and published by IET. This book was released on 2003 with total page 677 pages. Available in PDF, EPUB and Kindle. Book excerpt: A substantial update of his earlier IEE book, Modern Electronic Test and Measuring Instruments, the author provides a state-of-the art review of modern families of digital instruments. For each family he covers internal design, use and applications, highlighting their advantages and limitations from a practical application viewpoint.The book also treats new digital instrument families such as DSOs, Arbitrary Function Generators, FFT analysers and many other common systems used by the test engineers, designers and research scientists.