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Author : Verl Kelvin Neil
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Study of Some Coherent Electromagnetic Effects in High-current Particle Accelerators written by Verl Kelvin Neil and published by . This book was released on 1960 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 41 pages
Book Rating : 4.:/5 (727 download)
Download or read book COHERENT ELECTROMAGNETIC EFFECTS IN HIGH-CURRENT PARTICLE ACCELERATORS written by and published by . This book was released on 1960 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: A calculation is made of the interaction of a beam of particles in an accelerator with the radio-frequency cavity that provides the accelerating mechanism of the machine. A Hamiltonian for synchrotron motion is employed that makes possible the simultaneous solution of Maxwell's equations and the Vlasov equation, so that a self-consistent distribution of particles in synchrotron phase space is determined. The effective voltage on the cavity due to the beam of charged particles is of the order of magnitude of the product of the total circulating current in the accelerator and the shunt impedance of the r-f cavity. It has the net effect of producing a total voltage on the cavity which is both less than the applied voltage, and shifted in phase with respect to it. The increase in the stable phase angle required so the particles will remain in phase with the accelerating radio frequency is calculated. The decrease in total voltage and increase in stable phase angle result in a decrease in stable phase space available for acceleration, and convenient expressions are given for these quantities in terms of parameters of the accelerator. It is shown that the consequences of the induced voltage may be alleviated by increasing the voltage applied to the cavity. Nonresonant interaction between the beam and cavity is not considered. (auth).
Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (727 download)
Download or read book Coherent Electromagnetic Effects in High Current Particle Accelerators. III. Electromagnetic Coupling Instabilities in a Coasting Beam written by and published by . This book was released on 1960 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electromagnetic interaction of an intense relativistic coasting beam with itself, including the effect of a nonperfectly conducing vacuum tank, or a quiescent r-f cavity, k is investigated theoretically. It is shown that the resonances that may occur between harmonics of the particle circulation frequencies and the electromagnetic modes of the cavities can lead to a longitudinal instability of the beam. A criterion for stability of the beam against such longitudinal bunching is obtained as a restriction on the shunt impedance of the r-f cavity, or the Q of the vacuum tank. This criterion contains the energy spread and intensity of the coasting beam, as well as the parameters of the accelerator. Numerical examples are given which indicate that, in general, the resonances with the vacuum tank will not cause instabilities, while those with an r-f cavity can be prevented from causing instabilities by choosing the shunt impedance at a sufficiently low but still convenient value. (auth).
Download or read book A STUDY OF SOME COHERENT ELECTROMAGNETIC EFFECTS IN HIGH-CURRENT PARTICLE ACCELERATORS. written by and published by . This book was released on 1960 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two coherent effects by which particles circulating in an accelerator may lose energy are considered. The vacuum tark is assumed to be a toroid with rectangular cross section, highly conducting walls, a major radius very much larger than its cross sectional dimensions, and no discontinuities or windows. The beam configuration is assumed to be given and to be unaffected by the energy losses. The beam is assumed to have a negligible crosssectional area. Expressions for the electromagnetic fields arising from the given current and charge distribution are presented in three different forms. The first loss mechanism considered is the drugging of image charges through the walls of finlte conductivity. This is found to be a small effect for circulating currents of the order of 1 amp. A proof is developed that in such a vacuum tank there exist eigenmodes with phase velocities in the azimuthal direction that are less than the velocity of light. It is then possible for a relativistic beam to be in resonance with such a mode. It is shown that the excitation of these modes leads to a negligible energy loss in the types of vacuum chambers considered. The interaction of the beam with a radiofrequency cavity that provides the accelerating mechanism of the machine is discussed. The passage of the beam induces a back voltage on the cavity. The total voltage is the sum of the back voltage and the externally applied voltage. A Hamiltonian for synchrotron motion is employed that makes possible the simultaneous solution of Maxwell's equations and the Vlasov equation, so that a self-consistent distribution of particles in synchrotron phase space is determined. The induced voltage is of the order of magnitude of the product of the total circulating current in the accelerator and the shunt impedance of the nf cavity. It has the net effect of reducing the total cavity voltage and shifting its phase relative to the applied voltage. The stable phase angle must then be increased for the particles to remain in phase with the accelerating radio frequency. The decrease in total voltage and increase in stable phase angle result in a decrease in stable phase space available for acceleration. It is shown that the consequences of the induced voltage may be alleviated by increasing the voltage applied to the cavity. (auth).
Author : Bruno W. Zotter
Publisher : World Scientific
ISBN 13 : 9789810226268
Total Pages : 440 pages
Book Rating : 4.2/5 (262 download)
Download or read book Impedances and Wakes in High-energy Particle Accelerators written by Bruno W. Zotter and published by World Scientific. This book was released on 1998 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern particle accelerators and storage rings, whether used for high-energy physics, synchrotron light sources, or other purposes, require particle beams with the highest possible intensity. In order to achieve this maximum performance, a good understanding of the interaction of the charged particle beams with the surrounding vacuum chamber and other accelerator components is necessary. In the frequency domain, this interaction can be described by impedances, and equivalently by wake fields in the time domain. These need to be known to estimate the thresholds of coherent instabilities, or other collective effects, which limit the achievable beam current. Such considerations have to be taken into account already during the design of such machines, as they limit the choice of materials and the shapes of components required for their operations. The book explains the basic concepts, and the methods which have been used to calculate impedances and wakes. The emphasis is on circular particle accelerators and storage rings, with which the authors are more familiar, but many of these concepts are equally useful in linear accelerators or colliders. Without any pretense of completeness, the most important accelerator components, such as vacuum chambers with bellows and pumping ports, RF and other cavities, single steps, irises and collimators, etc. are described in specialised chapters. Also limitations and restrictions of the impedance and wake field descriptions are discussed. The book is mainly written for physicists working with or on particle accelerators or storage rings, and who want to understand the methods which have been used for such calculations.
Author : Gennady Stupakov
Publisher : Springer
ISBN 13 : 3319901885
Total Pages : 277 pages
Book Rating : 4.3/5 (199 download)
Download or read book Classical Mechanics and Electromagnetism in Accelerator Physics written by Gennady Stupakov and published by Springer. This book was released on 2018-05-23 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This self-contained textbook with exercises discusses a broad range of selected topics from classical mechanics and electromagnetic theory that inform key issues related to modern accelerators. Part I presents fundamentals of the Lagrangian and Hamiltonian formalism for mechanical systems, canonical transformations, action-angle variables, and then linear and nonlinear oscillators. The Hamiltonian for a circular accelerator is used to evaluate the equations of motion, the action, and betatron oscillations in an accelerator. From this base, we explore the impact of field errors and nonlinear resonances. This part ends with the concept of the distribution function and an introduction to the kinetic equation to describe large ensembles of charged particles and to supplement the previous single-particle analysis of beam dynamics. Part II focuses on classical electromagnetism and begins with an analysis of the electromagnetic field from relativistic beams, both in vacuum and in a resistive pipe. Plane electromagnetic waves and modes in waveguides and radio-frequency cavities are also discussed. The focus then turns to radiation processes of relativistic beams in different conditions, including transition, diffraction, synchrotron, and undulator radiation. Fundamental concepts such as the retarded time for the observed field from a charged particle, coherent and incoherent radiation, and the formation length of radiation are introduced. We conclude with a discussion of laser-driven acceleration of charged particles and the radiation damping effect. Appendices on electromagnetism and special relativity are included, and references are given in some chapters as a launching point for further reading. This text is intended for graduate students who are beginning to explore the field of accelerator physics, but is also recommended for those who are familiar with particle accelerators but wish to delve further into the theory underlying some of the more pressing concerns in their design and operation.
Author : Vyacheslov A. Buts
Publisher : Springer Science & Business Media
ISBN 13 : 3540306900
Total Pages : 268 pages
Book Rating : 4.5/5 (43 download)
Download or read book The Theory of Coherent Radiation by Intense Electron Beams written by Vyacheslov A. Buts and published by Springer Science & Business Media. This book was released on 2006-08-26 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spurred by the development of high-current, high-energy relativistic electron beams, this books delves into the foundations of a device- and geometry-independent theoretical treatment of a large collection of interacting and radiating electron bunches. Covers a broad swath of topics, from the radiation emission of a single charged particle to collective behaviour of a high-density electron bunch, to application in modern sytems.
Author : Helmut Wiedemann
Publisher : Springer Science & Business Media
ISBN 13 : 3540490450
Total Pages : 948 pages
Book Rating : 4.5/5 (44 download)
Download or read book Particle Accelerator Physics written by Helmut Wiedemann and published by Springer Science & Business Media. This book was released on 2007-08-01 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an in-depth and comprehensive introduction to the field of high-energy particle acceleration and beam dynamics. This is the first modern and comprehensive textbook in the field. It begins by gathering the basic tools, recalling the essentials of electrostatics and electrodynamics as well as of particle dynamics in electromagnetic fields. It includes coverage of advanced topics of coupled beam dynamics. There is an exhaustive treatment of radiation from accelerated charges. Appendices gather useful mathematical and physical formulae, parameters and units, and solutions to the many end-of-chapter problems are given.
Author : D. A. Edwards
Publisher : John Wiley & Sons
ISBN 13 : 3527617280
Total Pages : 304 pages
Book Rating : 4.5/5 (276 download)
Download or read book An Introduction to the Physics of High Energy Accelerators written by D. A. Edwards and published by John Wiley & Sons. This book was released on 2008-11-20 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first half deals with the motion of a single particle under the influence of electronic and magnetic fields. The basic language of linear and circular accelerators is developed. The principle of phase stability is introduced along with phase oscillations in linear accelerators and synchrotrons. Presents a treatment of betatron oscillations followed by an excursion into nonlinear dynamics and its application to accelerators. The second half discusses intensity dependent effects, particularly space charge and coherent instabilities. Includes tables of parameters for a selection of accelerators which are used in the numerous problems provided at the end of each chapter.
Author : Ingo Hofmann
Publisher : Springer
ISBN 13 : 3319621572
Total Pages : 158 pages
Book Rating : 4.3/5 (196 download)
Download or read book Space Charge Physics for Particle Accelerators written by Ingo Hofmann and published by Springer. This book was released on 2017-09-20 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding and controlling the physics of space charge effects in linear and circular proton and ion accelerators are essential to their operation, and to future high-intensity facilities. This book presents the status quo of this field from a theoretical perspective, compares analytical approaches with multi-particle computer simulations and – where available – with experiments. It discusses fundamental concepts of phase space motion, matched beams and modes of perturbation, along with mathematical models of analysis – from envelope to Vlasov-Poisson equations. The main emphasis is on providing a systematic description of incoherent and coherent resonance phenomena; parametric instabilities and sum modes; mismatch and halo; error driven resonances; and emittance exchange due to anisotropy, as well as the role of Landau damping. Their distinctive features are elaborated in the context of numerous sample simulations, and their potential impacts on beam quality degradation and beam loss are discussed. The book is intended for advanced beginners in accelerator research, and for experts interested in the mechanisms of direct space charge interaction and their modeling.
Author : A. G. Bonch-Osmolovsky
Publisher : World Scientific
ISBN 13 : 9789810212384
Total Pages : 158 pages
Book Rating : 4.2/5 (123 download)
Download or read book Physics of New Methods of Charged Particle Acceleration written by A. G. Bonch-Osmolovsky and published by World Scientific. This book was released on 1994 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: http://www.worldscientific.com/worldscibooks/10.1142/1888
Author : Semyon Kheifets
Publisher : World Scientific
ISBN 13 : 9814499110
Total Pages : 426 pages
Book Rating : 4.8/5 (144 download)
Download or read book Impedances And Wakes In High Energy Particle Accelerators written by Semyon Kheifets and published by World Scientific. This book was released on 1998-02-28 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern particle accelerators and storage rings, whether used for high-energy physics, synchrotron light sources, or other purposes, require particle beams with the highest possible intensity. In order to achieve this maximum performance, a good understanding of the interaction of the charged particle beams with the surrounding vacuum chamber and other accelerator components is necessary. In the frequency domain, this interaction can be described by impedances, and equivalently by wake fields in the time domain. These need to be known to estimate the thresholds of coherent instabilities, or other collective effects, which limit the achievable beam current. Such considerations have to be taken into account already during the design of such machines, as they limit the choice of materials and the shapes of components required for their operations.The book explains the basic concepts, and the methods which have been used to calculate impedances and wakes. The emphasis is on circular particle accelerators and storage rings, with which the authors are more familiar, but many of these concepts are equally useful in linear accelerators or colliders. Without any pretense of completeness, the most important accelerator components, such as vacuum chambers with bellows and pumping ports, RF and other cavities, single steps, irises and collimators, etc. are described in specialised chapters. Also limitations and restrictions of the impedance and wake field descriptions are discussed. The book is mainly written for physicists working with or on particle accelerators or storage rings, and who want to understand the methods which have been used for such calculations.
Author : Mario Conte
Publisher : World Scientific
ISBN 13 : 9789810208127
Total Pages : 268 pages
Book Rating : 4.2/5 (81 download)
Download or read book An Introduction to the Physics of Particle Accelerators written by Mario Conte and published by World Scientific. This book was released on 1991 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise and coherent introduction to the physics of particle accelerators. It is written for students at the graduate level in physics and provides the elements to tackle the main problems regarding cyclic particle accelerators. In particular, a thorough introduction is given on the topics of such machines. Phase focusing is also fully treated, together with fundamental topics like synchrotron radiation and linear and nonlinear resonances. A chapter is devoted to rf linear accelerators and rf structures. The chapter on space charge effects deals with tune-shifts and beam-beam interactions. The final chapter treats both electron and stochastic cooling, thus rounding up the treatment of phase-space shrinkage introduced in the chapter on synchrotron.
Author : Helmut Wiedemann
Publisher : Springer Science & Business Media
ISBN 13 : 3662038277
Total Pages : 465 pages
Book Rating : 4.6/5 (62 download)
Download or read book Particle Accelerator Physics I written by Helmut Wiedemann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this second edition of Particle Accelerator Physics, Vol. 1, is mainly a reprint of the first edition without significant changes in content. The bibliography has been updated to include more recent progress in the field of particle accelerators. With the help of many observant readers a number of misprints and errors could be eliminated. The author would like to express his sincere appreciation to all those who have pointed out such shortcomings and wel comes such information and any other relevant information in the future. The author would also like to express his special thanks to the editor Dr. Helmut Lotsch and his staff for editorial as well as technical advice and support which contributed greatly to the broad acceptance of this text and made a second edition of both volumes necessary. Palo Alto, California Helmut Wiedemann November 1998 VII Preface to the First Edition The purpose of this textbook is to provide a comprehensive introduction into the physics of particle accelerators and particle beam dynamics. Parti cle accelerators have become important research tools in high energy physics as well as sources of incoherent and coherent radiation from the far infra red to hard x-rays for basic and applied research. During years of teaching accelerator physics it became clear that the single most annoying obstacle to get introduced into the field is the absence of a suitable textbook.
Author : S Y Lee
Publisher : World Scientific Publishing Company
ISBN 13 : 9814405280
Total Pages : 554 pages
Book Rating : 4.8/5 (144 download)
Download or read book Accelerator Physics written by S Y Lee and published by World Scientific Publishing Company. This book was released on 2011-11-16 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research and development of high energy accelerators began in 1911. Since then, milestones achieved are: (1) development of high gradient dc and rf accelerators,(2) achievement of high field magnets with excellent field quality,(3) discovery of transverse and longitudinal beam focusing principles,(4) invention of high power rf sources,(5) improvement of ultra-high vacuum technology,(6) attainment of high brightness (polarized/unpolarized) electron/ionsources,(7) advancement of beam dynamics and beam manipulation schemes, such as beam injection, accumulation, slow and fast extraction, beam damping and beam cooling, instability feedback, laser-beam interaction and harvesting instability for high brilliance coherent photon source. The impacts of the accelerator development are evidenced by the many ground-breaking discoveries in particle and nuclear physics, atomic and molecular physics, condensed matter physics, biology, biomedical physics, nuclear medicine, medical therapy, and industrial processing. This book is intended to be used as a graduate or senior undergraduate textbook in accelerator physics and science. It can be used as preparatory course material in graduate accelerator physics thesis research. The text covers historical accelerator development, transverse betatron motion, synchrotron motion, an introduction to linear accelerators, and synchrotron radiation phenomena in low emittance electron storage rings, introduction to special topics such as the free electron laser and the beam-beam interaction. Attention is paid to derivation of the action-angle variables of the phase space, because the transformation is important for understanding advanced topics such as the collective instability and nonlinear beam dynamics. Each section is followed by exercises, which are designed to reinforce concepts and to solve realistic accelerator design problems. Contents:Introduction:Historical DevelopmentsLayout and Components of AcceleratorsAccelerator ApplicationsTransverse Motion:Hamiltonian for Particle Motion in AcceleratorsLinear Betatron MotionEffect of Linear Magnet ImperfectionsOff-Momentum OrbitChromatic AberrationLinear CouplingNonlinear ResonancesCollective Instability and Landau DampingSynchro-Betatron HamiltonianSynchrotron Motion:Longitudinal Equation of MotionAdiabatic Synchrotron MotionRF Phase and Voltage ModulationsNonadiabatic and Nonlinear Synchrotron MotionBeam Manipulation in Synchrotron Phase SpaceFundamentals of RF SystemsLongitudinal Collective InstabilitiesIntroduction to Linear AcceleratorsPhysics of Electron Storage Rings:Fields of a Moving Charged ParticleRadiation Damping and ExcitationEmittance in Electron Storage RingsSpecial Topics in Beam Physics:Free Electron Laser (FEL)Beam-Beam InteractionClassical Mechanics and Analysis:Hamiltonian DynamicsStochastic Beam DynamicsModel Independent AnalysisNumerical Methods and Physical Constants:Fourier TransformCauchy Theorem and the Dispersion RelationUseful Handy FormulasMaxwell's EquationsPhysical Properties and Constants Readership: Accelerator, high-energy, nuclear, plasma and applied physicists.
Author :
Publisher :
ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.E/5 ( download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Waldemar H. Scharf
Publisher : CRC Press
ISBN 13 : 9783718605330
Total Pages : 700 pages
Book Rating : 4.6/5 (53 download)
Download or read book Particle Accelerators and Their Uses written by Waldemar H. Scharf and published by CRC Press. This book was released on 1991 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
