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Research On Gyrotrons
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Book Synopsis Introduction to the Physics of Gyrotrons by : Gregory S. Nusinovich
Download or read book Introduction to the Physics of Gyrotrons written by Gregory S. Nusinovich and published by JHU Press. This book was released on 2020-03-03 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: As unique sources of coherent high-power, microwave, and millimeter-wave radiation, gyrotrons are an essential part of the hunt for controlled fusion. Presently, gyrotrons are actively used for electron cyclotron resonance plasma heating and current drive in various controlled fusion reactors. These sources have been under development in many countries for more than forty years. In spite of their widespread use, however, there is as yet no single book to introduce non-specialists to this vital field. Now Gregory S. Nusinovich, an early pioneer of the gyrotron and widely regarded today as the world's leading authority on the subject, explains the fundamental physical principles upon which gyrotrons and related devices operate. Nusinovich first sets forth some "rules of thumb" that allow readers to understand gyrotron operation in simple terms. He then explores the fundamentals of the general theory of gyrotrons and offers an overview of the various types of gyro-devices, including gyromonotrons, gyroklystrons, gyro-traveling-wave tubes, and gyrotwystrons. He explains not only the theory, linear and nonlinear, but also the practical challenges that users of such devices face. This book will be of interest to undergraduate and graduate students as well as to those who develop gyrotrons or who use them in various applications. It should also appeal to plasma physicists interested in charged-particle dynamics, as well as to applied physicists needing to know more about micro- and millimeter-wave technologies.
Author :Machavaram V. Kartikeyan Publisher :Springer Science & Business Media ISBN 13 :3662076373 Total Pages :234 pages Book Rating :4.6/5 (62 download)
Book Synopsis Gyrotrons by : Machavaram V. Kartikeyan
Download or read book Gyrotrons written by Machavaram V. Kartikeyan and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on the author's wide experience, this book gives a comprehensive review of the state of the art in gyrotron technology, covering the theory, design and applications. The book includes an extensive references list which provides an excellent guide to the related literature.
Book Synopsis Research on Gyrotrons by : J. L. Hirshfield
Download or read book Research on Gyrotrons written by J. L. Hirshfield and published by . This book was released on 1985 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: A summary is given of research on gyrotron-like mechanisms for anplifying or generating electromagnetic radiation. These mechanisms include slow-wave cyclotron-wave amplification in a dielectrically-loaded waveguide, cyclotron harmonic oscillations in a quasi-optical millimeter-wave structure, a quasi-optical gyro-klystron, and cyclotron, and cyclotron harmonic amplification in irregular cross section waveguides. Both linearized theory and experimental observations are described. Keywords include: Gyrotron, Cyclotron resonance, Microwave amplification, and Millimeterwave generation.
Book Synopsis Soviet Development of Gyrotrons by : Simon Kassel
Download or read book Soviet Development of Gyrotrons written by Simon Kassel and published by . This book was released on 1986 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report surveys the development of high-power cyclotron resonance masers (CRM) and gyrotrons in the Soviet Union, based on Soviet open-source literature. It deals with the nature and history of relativistic CRM devices; provides a sequence of the most important issues of gyrotron research and development as perceived by Soviet authors; and discusses individual Soviet research groups, the basic organizational units responsible for the CRM and gyrotron research and development. The study suggests, among other things, that high-power relativistic microwave electronics is one of the most successful areas of Soviet R&D. It has maintained a consistent record of significant achievements; it has managed to overcome the systemic weakness of the Soviet R&D system in being able to translate effectively the results of advanced research into production of practical equipment; and it has become the fastest growing area of application of pulsed power technology, which itself has been for many years the subject of priority development in the Soviet Union.
Book Synopsis Conceptual Studies of Multistage Depressed Collectors for Gyrotrons by : Wu, Chuanren
Download or read book Conceptual Studies of Multistage Depressed Collectors for Gyrotrons written by Wu, Chuanren and published by KIT Scientific Publishing. This book was released on 2019-09-09 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research at MIT on High Frequency Gyrotrons for ECRH by : Kenneth E. Kreischer
Download or read book Research at MIT on High Frequency Gyrotrons for ECRH written by Kenneth E. Kreischer and published by . This book was released on 1990 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigations of After Cavity Interaction in Gyrotrons Including the Effect of Non-uniform Magnetic Field by : Roy Choudhury, Amitavo
Download or read book Investigations of After Cavity Interaction in Gyrotrons Including the Effect of Non-uniform Magnetic Field written by Roy Choudhury, Amitavo and published by KIT Scientific Publishing. This book was released on 2014-02-05 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic after-cavity interaction (ACI) in megawatt-class gyrotrons is investigated that could lead to lower output mode purity and increased level of internal stray radiation. The self-consistent KIT-IHM multi-mode-code SELFT has been modified to extend the simulation domain into the radius up-taper section of the gyrotron cavity where the probability of ACI exists. Studies on four different gyrotron configurations confirm that undesired interactions in the up-taper region can result in additional parasitic oscillations with relative power in the 1%-range.
Book Synopsis Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers by : Chao-Hai Du
Download or read book Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers written by Chao-Hai Du and published by Springer. This book was released on 2014-05-29 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar. The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability competition has been for the first time addressed in a focused and systematic way and reported via concise states and vivid pictures. The book is likely to meet the interest of researchers and engineers in radar and microwave technology, who would like to study the gyro-TWTs and to promote its application in millimeter-wave radars. Chao-Hai Du and Pu-Kun Liu are both professors at Peking University.
Book Synopsis State-of-the-Art Survey of Gyrotron Research: An ONRL Sponsored Workshop by : Paul Roman
Download or read book State-of-the-Art Survey of Gyrotron Research: An ONRL Sponsored Workshop written by Paul Roman and published by . This book was released on 1986 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented: a thorough review of the past history and the current work on the fast-wave amplifiers performed at Naval Research Laboratory (NRL); two current NRL research projects in the plasma physics division: first on highly relativistic gyrotrons, and then on the design and initial performance of cyclotron autoresonance masers. An overview of applications of gyrotrons in the area of electron cyclotron resonance plasma heating for fusion experiments; a status report on the latest design results of a 150 GHz overmoded gyrotron development project at the German Nuclear Research Institute in Karlsruhe whose purpose is to study higher modes in circular gyrotrons with increasing output power; current and planned gyrotron development studies within the framework of the Fusion Programme of the Commission of the European Communities; and work on high peak power gyroklystron amplifiers.
Book Synopsis Improved Collectors for High Power Gyrotrons by :
Download or read book Improved Collectors for High Power Gyrotrons written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: High power gyrotrons are used for electron cyclotron heating, current drive and parasitic mode suppression in tokamaks for fusion energy research. These devices are crucial for successful operation of many research programs around the world, including the ITER program currently being constructed in France. Recent gyrotron failures resulted from cyclic fatigue of the copper material used to fabricated the collectors. The techniques used to collect the spent beam power is common in many gyrotrons produced around the world. There is serious concern that these tubes may also be at risk from cyclic fatigue. This program addresses the cause of the collector failure. The Phase I program successfully demonstrated feasibility of a mode of operation that eliminates the cyclic operation that caused the failure. It also demonstrated that new material can provide increased lifetime under cyclic operation that could increase the lifetime by more than on order of magnitude. The Phase II program will complete that research and develop a collector that eliminates the fatigue failures. Such a design would find application around the world.
Book Synopsis Design Studies Towards a 4 MW 170 GHz Coaxial-cavity Gyrotron by : Matthias Hermann Beringer
Download or read book Design Studies Towards a 4 MW 170 GHz Coaxial-cavity Gyrotron written by Matthias Hermann Beringer and published by KIT Scientific Publishing. This book was released on 2014-08-20 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work the feasibility of a 4 MW 170 GHz coaxial-cavity gyrotron for continuous wave operation is demonstrated. For the first time complete physical designs of the major gyrotron components are elaborated. In a first step, one possible new operating mode is determined, followed by the development of detailed physical designs of the major gyrotron components: Diode and triode type electron gun, coaxial cavity, two-beam quasi-optical output coupler and depressed collector.
Book Synopsis Theory and Modeling of High-Power Gyrotrons by :
Download or read book Theory and Modeling of High-Power Gyrotrons written by and published by . This book was released on 2016 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarized results of the work performed at the Institute for Research in Electronics and Applied Physics of the University of Maryland (College Park, MD) in the framework of the DOE Grant "Theory and Modeling of High-Power Gyrotrons". The report covers the work performed in 2011-2014. The research work was performed in three directions: - possibilities of stable gyrotron operation in very high-order modes offering the output power exceeding 1 MW level in long-pulse/continuous-wave regimes, - effect of small imperfections in gyrotron fabrication and alignment on the gyrotron efficiency and operation, - some issues in physics of beam-wave interaction in gyrotrons.
Book Synopsis State-of-the-Art of High-Power Gyro-Devices. Update of Experimental Results 2021. (KIT Scientific Reports ; 7761) by : Thumm, Manfred
Download or read book State-of-the-Art of High-Power Gyro-Devices. Update of Experimental Results 2021. (KIT Scientific Reports ; 7761) written by Thumm, Manfred and published by KIT Scientific Publishing. This book was released on 2021-10-28 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an update of the experimental achievements published in the review “State- of-the-Art of High-Power Gyro-Devices and Free Electron Masers”, Journal of Infrared, Millime-ter, and Terahertz Waves, 41, No. 1, pp 1-140 (2020) related to the development of gyro-devices (Tables 2-34). Emphasis is on high-power gyrotron oscillators for long-pulse or continuous wave (CW) operation and pulsed gyrotrons for any applications.
Book Synopsis Investigations of After Cavity Interaction in Gyrotrons Including the Effect of Non-uniform Magnetic Field by : Amitavo Roy Choudhury
Download or read book Investigations of After Cavity Interaction in Gyrotrons Including the Effect of Non-uniform Magnetic Field written by Amitavo Roy Choudhury and published by . This book was released on 2020-10-09 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic after-cavity interaction (ACI) in megawatt-class gyrotrons is investigated that could lead to lower output mode purity and increased level of internal stray radiation. The self-consistent KIT-IHM multi-mode-code SELFT has been modified to extend the simulation domain into the radius up-taper section of the gyrotron cavity where the probability of ACI exists. Studies on four different gyrotron configurations confirm that undesired interactions in the up-taper region can result in additional parasitic oscillations with relative power in the 1%-range. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Book Synopsis Analytical and Numerical Modeling of Gyrotrons by : D. Dialetis
Download or read book Analytical and Numerical Modeling of Gyrotrons written by D. Dialetis and published by . This book was released on 1984 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report on work performed during the period 21 May 1980 through 20 July 1984. It describes the research activities of SAI personnel in support of the experimental and theoretical gyrotron development program at the Naval Research Laboratory. SAI conducted theoretical work consisting of analytical and numerical modeling of high power gyrotron radiation devices. The research effort has been focused on: Wideband amplifier design and theory; Megawatt oscillator design and theory; Quasi-optical resonator theory; and RF heating and current drive in a plasma.
Book Synopsis A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification by : Ruess, Tobias
Download or read book A First 2 MW-Class (136)/170/204 GHz Multi-Frequency Gyrotron Pre-Prototype for DEMO: Design, Construction and Key Components Verification written by Ruess, Tobias and published by KIT Scientific Publishing. This book was released on 2023-10-26 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ein Gyrotron wird in magnetisch eingeschlossenen Plasmaexperimenten für Heizung, Stromtrieb, Plasmastabilisierung und Plasmadiagnostik verwendet. In dieser Arbeit wird der erste Entwurf und Bau eines Mehrfrequenz-/Mehrzweck Pre-Prototyp Gyrotrons in koaxialer Technologie vorgestellt, das bei (136)/170/204 GHz mit einer Ausgangsleistung von 2 MW arbeitet. Dies ist der erste Schritt zum Betrieb bei Frequenzen bis zu 240 GHz unter Verwendung der Koaxialhohlraum-Gyrotrontechnologie. - A gyrotron is used in magnetically confined plasma experiments for heating, current drive, plasma stabilization and plasma diagnostics. This work presents the first design and construction of a multi-frequency / multi-purpose coaxial-cavity pre-prototype gyrotron operating at (136)/170/204 GHz with an output power of 2 MW. It is the first step towards operating frequencies up to 240 GHz using the coaxial-cavity gyrotron technology.
Book Synopsis Gyrotron Oscillators by : C Edgecombe
Download or read book Gyrotron Oscillators written by C Edgecombe and published by CRC Press. This book was released on 1993-11-15 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of gyrotrons has developed rapidly during recent years and they now form very powerful sources of microwave energy at millimetric wavelengths. Much development, both of the detailed theory including multi-mode interaction and of practical devices, has taken place in the major European laboratories. This book is a collection of surve
