Automated Mode Recovery And Electronic Stability Control For Wendelstein 7 X Gyrotrons
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Automated Mode Recovery And Electronic Stability Control For Wendelstein 7 X Gyrotrons
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Author : Wilde, Fabian
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-08-07
Automated Mode Recovery And Electronic Stability Control For Wendelstein 7 X Gyrotrons written by Wilde, Fabian and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-08-07 with categories.
Magnetic confinement fusion relies on plasma heating and plasma control using gyrotron oscillators providing at megawatt power levels. The operational reliability decreases when operating at the performance limits due to increasing parasitic mode activity. This work demonstrates for the first time the automated, fast recovery of nominal gyrotron operation during a pulse by exploiting the hysteretic gyrotron behaviour after a mode switch being in use at the Wendelstein 7-X ECRH facility.
Automated Mode Recovery And Electronic Stability Control For Wendelstein 7 X Gyrotrons
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Author : Fabian Wilde
language : en
Publisher:
Release Date : 2021
Automated Mode Recovery And Electronic Stability Control For Wendelstein 7 X Gyrotrons written by Fabian Wilde and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Gyrotrons categories.
Multphysics Modelling Towards The Stabilization Of Pan Fibers With Microwaves Based On Experimental Data
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Author : Hofele, Julia
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-07-10
Multphysics Modelling Towards The Stabilization Of Pan Fibers With Microwaves Based On Experimental Data written by Hofele, Julia and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-07-10 with categories.
High energy demand is one reason for high costs of carbon fibers. One option to decrease them is to use microwave heating instead of conventional heating. In this work, steps towards a microwave assisted process during the stabilization phase are presented. In-situ dielectric measurements are performed and a reaction kinetics model is setup in connection to the dielectric loss. This allows to calculate a stabilization degree and fiber temperatures leading to a basic process understanding.
Gyrotrons
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Author : Machavaram V. Kartikeyan
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-14
Gyrotrons written by Machavaram V. Kartikeyan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-14 with Technology & Engineering categories.
Gyrotron oscillators (gyrotrons) are capable of providing hundreds of kilo watts of power at microwave and millimetric wavelengths. From their con ception in the late fifties until their successful development for various ap plications, gyrotrons have come a long way technologically and made an ir reversible impact on both users and developers. The possible applications of high power millimeter and sub-millimeter waves from gyrotrons and their variants (gyro-devices) span a wide range of technologies. The plasma physics community has already taken advantage of the recent advances of gyrotrons in the areas of RF plasma production, heating, non-inductive current drive, plasma stabilization and active plasma diagnostics for magnetic confinement thermonuclear fusion research, such as lower hybrid current drive (LHCD) (8 G Hz), electron cyclotron resonance heating (ECRH) (28-170 G Hz), elec tron cyclotron current drive (ECCD), collective Thomson scattering (CTS) and heat-wave propagation experiments. Other important applications of gy rotrons are electron cyclotron resonance (ECR) discharges for the generation of multi-charged ions and soft X-rays, as well as industrial materials process ing and plasma chemistry. Submillimeter wave gyrotrons are employed in high frequency, broadband electron paramagnetic resonance (EPR) spectroscopy. Additional future applications await the development of novel high power gyro-amplifiers and devices for high resolution radar ranging and imaging in atmospheric and planetary science as well as deep space and specialized satellite communications and RF drivers for next generation high gradient linear accelerators (supercolliders).
Safe Handling Of Tritium
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Author : International Atomic Energy Agency
language : en
Publisher:
Release Date : 1991
Safe Handling Of Tritium written by International Atomic Energy Agency and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Technology & Engineering categories.
This publication contains information on the dosimetry and monitoring of tritium, the use of protective clothing for work with tritium, safe practices in tritium handling laboratories and details of tritium compatible materials. The information has been compiled from experience in the various applications of tritium and should represent valuable source material to all users of tritium, including those involved in fusion R&D.
Superconducting Accelerator Magnets
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Author : Karl-hubert Mess
language : en
Publisher: World Scientific
Release Date : 1996-08-30
Superconducting Accelerator Magnets written by Karl-hubert Mess and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996-08-30 with Science categories.
The main topic of the book are the superconducting dipole and quadrupole magnets needed in high-energy accelerators and storage rings for protons, antiprotons or heavy ions. The basic principles of low-temperature superconductivity are outlined with special emphasis on the effects which are relevant for accelerator magnets. Properties and fabrication methods of practical superconductors are described. Analytical methods for field calculation and multipole expansion are presented for coils without and with iron yoke. The effect of yoke saturation and geometric distortions on field quality is studied. Persistent magnetization currents in the superconductor and eddy currents the copper part of the cable are analyzed in detail and their influence on field quality and magnet performance is investigated. Superconductor stability, quench origins and propagation and magnet protection are addressed. Some important concepts of accelerator physics are introduced which are needed to appreciate the demanding requirements on field quality in large storage rings. The operational experience with the superconducting HERA collider serves as an illustration. Finally superconducting correction coils and practical construction and fabrication methods of accelerator magnets are discussed. The physical and technical principles described in the book are substantiated with a wealth of experimental data on multipoles, persistent- and eddy-current effects, quench performance and much more.
Vacuum Electronics
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Author : Joseph A. Eichmeier
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-03-04
Vacuum Electronics written by Joseph A. Eichmeier and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-03-04 with Technology & Engineering categories.
Nineteen experts from the electronics industry, research institutes and universities have joined forces to prepare this book. It does nothing less than provide a complete overview of the electrophysical fundamentals, the present state of the art and applications, as well as the future prospects of microwave tubes and systems. The book does the same for optoelectronics vacuum devices, electron and ion beam devices, light and X-ray emitters, particle accelerators and vacuum interrupters.
Plasma Atomic Physics
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Author : Frank B. Rosmej
language : en
Publisher: Springer
Release Date : 2021-09-07
Plasma Atomic Physics written by Frank B. Rosmej and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-07 with Science categories.
Plasma Atomic Physics provides an overview of the elementary processes within atoms and ions in plasmas, and introduces readers to the language of atomic spectra and light emission, allowing them to explore the various and fascinating radiative properties of matter. The book familiarizes readers with the complex quantum-mechanical descriptions of electromagnetic and collisional processes, while also developing a number of effective qualitative models that will allow them to obtain adequately comprehensive descriptions of collisional-radiative processes in dense plasmas, dielectronic satellite emissions and autoionizing states, hollow ion X-ray emissions, polarized atoms and ions, hot electrons, charge exchange, atomic population kinetics, and radiation transport. Numerous applications to plasma spectroscopy and experimental data are presented, which concern magnetic confinement fusion, inertial fusion, laser-produced plasmas, and X-ray free-electron lasers’ interaction with matter. Particular highlights include the development of quantum kinetics to a level surpassing the almost exclusively used quasi-classical approach in atomic population kinetics, the introduction of the recently developed Quantum-F-Matrix-Theory (QFMT) to study the impact of plasma microfields on atomic populations, and the Enrico Fermi equivalent photon method to develop the “Plasma Atom”, where the response properties and oscillator strength distribution are represented with the help of a local plasma frequency of the atomic electron density. Based on courses held by the authors, this material will assist students and scientists studying the complex processes within atoms and ions in different kinds of plasmas by developing relatively simple but highly effective models. Considerable attention is paid to a number of qualitative models that deliver physical transparency, while extensive tables and formulas promote the practical and useful application of complex theories and provide effective tools for non-specialist readers.
Measurements Of Neutrino Mass
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Author : Fernando Ferroni
language : en
Publisher: IOS Press
Release Date : 2009
Measurements Of Neutrino Mass written by Fernando Ferroni and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Science categories.
"This volume offers a valuable insight into various aspects of the ongoing work directed at measuring neutrino mass. It took twenty years to refute the assertions of Bethe and Peierls that neutrinos were not observable, but it has since been realised that much can be learnt from these particles. The moral is, as Fiorini argues here, that the study of neutrinos was and remains demanding but rewarding. Subjects addressed in this volume include: clarifying the meaning of the Klapdor-Kleingrothaus results, probing the Majorana nature of neutrinos, observing lepton number violating effects for the first time, studying the end point of the spectrum in the search for neutrino masses and speculating whether it is possible to measure neutrino masses in cosmology. Lectures are enriched with rich historical overviews and valuable introductory material. Attention is also given to theoretical topics such as the evolution of the concept of mass in particle physics, a status report on neutrino oscillations and current discussion on neutrino masses. The reader is further reminded that neutrino masses may also have some bearing on the very origin of the matter among us, and have many deep links with other important lines of current physics research." --Book Jacket.
Biopolymer Grafting Synthesis And Properties
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Author : Vijay Kumar Thakur
language : en
Publisher: Elsevier
Release Date : 2017-10-06
Biopolymer Grafting Synthesis And Properties written by Vijay Kumar Thakur and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-06 with Technology & Engineering categories.
Biopolymer Grafting: Synthesis and Properties presents the latest research and developments in fundamental of synthesis and properties of biopolymer-based graft copolymers. The book presents a broad overview of the biopolymer grafting process, along with trends in the field. It also introduces a range of grafting methods which lead to materials with enhanced properties for a range of practical applications, along with the positives and limitations of these techniques. The book bridges the knowledge gap between the scientific principles and industrial applications of polymer grafting. This book covers synthesis and characterization of graft-copolymers of plant polysaccharides, functional separation membranes from grafted biopolymers, and polysaccharides in alternative methods for insulin delivery. Recent trends and advances in this area are discussed, assisting materials scientists and researchers in mapping out the future of these new "green" materials through value addition to enhance their use.