Theoretical and Experimental Studies on Novel High-Gain Seeded Free-Electron Laser Schemes

Theoretical and Experimental Studies on Novel High-Gain Seeded Free-Electron Laser Schemes PDF

Author: Chao Feng

Publisher: Springer

Published: 2015-12-18

Total Pages: 118

ISBN-13: 3662490668

DOWNLOAD EBOOK →

This dissertation focuses on the study of novel high-gain free-electron laser (FEL) operation schemes with external seed lasers. The technique of manipulating the phase space of the electron beam, which is widely used in novel seeded FEL schemes, is systematically studied. Several novel FEL schemes are proposed for the generation of intense coherent FEL pulses with short wavelength, sub-femtosecond pulse length or multiple carrier frequency properties, which meet the needs of FEL users. Results of experiments are described for the recently proposed FEL schemes such as echo-enabled harmonic generation and cascaded high-gain harmonic generation. New photon/electron beam diagnostic methods are also developed for these experiments and future high-gain FEL facilities.

Theoretical Study of Novel Concepts for Compact, High-gain Free Electron Lasers

Theoretical Study of Novel Concepts for Compact, High-gain Free Electron Lasers PDF

Author: Panagiotis Baxevanis

Publisher:

Published: 2015

Total Pages:

ISBN-13:

DOWNLOAD EBOOK →

In recent years, the free-electron laser (FEL) has demonstrated its value as a tunable source of bright, coherent radiation with photon energies up to the X-ray region. For such short radiation wavelengths, three-dimensional (3D) effects (due to diffraction, emittance and focusing) become significant and must be taken into consideration. In this work, we present a systematic, fully 3D theoretical formalism applicable to a range of concepts for compact, high-gain FELs. These include novel schemes involving the use of transverse gradient (TGU) or laser undulators. Our approach utilizes either a standard eigenmode analysis for constant-parameter systems or a non-eigenmode expansion technique in terms of orthogonal transverse modes for cases where the parameters of the electron beam and/or the undulator vary along the longitudinal direction. The results we obtain fully characterize the system (electron beam and radiation) in the linear regime of the interaction and are shown to be in excellent agreement with simulation. Moreover, the formalism developed here can be used in comprehensive, theory-based optimization studies, with significant applications in FEL design.

Synchrotron Radiation and Free-Electron Lasers

Synchrotron Radiation and Free-Electron Lasers PDF

Author: Kwang-Je Kim

Publisher: Cambridge University Press

Published: 2017-03-23

Total Pages: 299

ISBN-13: 1107162610

DOWNLOAD EBOOK →

Preliminary concepts -- Synchrotron radiation -- Basic FEL physics -- 1D FEL analysis -- 3D FEL analysis -- Harmonic generation in high-gain FELs -- FEL oscillators and coherent hard X-rays -- Practical considerations and experimental results for high-gain FELs

Principles of Free Electron Lasers

Principles of Free Electron Lasers PDF

Author: Henry P. Freund

Publisher: Springer Nature

Published: 2023-09-19

Total Pages: 747

ISBN-13: 3031409450

DOWNLOAD EBOOK →

This book presents a comprehensive description of the physics of free-electron lasers starting from the fundamentals and proceeding through detailed derivations of the equations describing electron trajectories, and spontaneous and stimulated emission. Linear and nonlinear analyses are described, as are detailed explanations of the nonlinear simulation of a variety of configurations including amplifiers, oscillators, self-amplified spontaneous emission, high-gain harmonic generation, and optical klystrons. Theory and simulation are anchored using comprehensive comparisons with a wide variety of experiments.

Principles of Free-Electron Lasers

Principles of Free-Electron Lasers PDF

Author: H. P. Freund

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 476

ISBN-13: 9401123160

DOWNLOAD EBOOK →

At the time that we decided to begin work on this book, several other volumes on the free-electron laser had either been published or were in press. The earliest work of which we were aware was published in 1985 by Dr T. C. Marshall of Columbia University [1]. This book dealt with the full range of research on free-electron lasers, including an overview of the extant experiments. However, the field has matured a great deal since that time and, in our judgement, the time was ripe for a more extensive work which includes the most recent advances in the field. The fundamental work in this field has largely been approached from two distinct and, unfortunately, separate viewpoints. On the one hand, free-electron lasers at sub-millimetre and longer wavelengths driven by low-energy and high-current electron beams have been pursued by the plasma physics and microwave tube communities. This work has confined itself largely to the high-gain regimes in which collective effects may play an important role. On the other hand, short-wavelength free-electron lasers in the infrared and optical regimes have been pursued by the accelerator and laser physics community. Due to the high-energy and low-current electron beams appropriate to this spectral range, these experiments have operated largely in the low-gain single-particle regimes. The most recent books published on the free-electron laser by Dr C. A.

Soviet Free-electron Laser Research

Soviet Free-electron Laser Research PDF

Author: Simon Kassel

Publisher:

Published: 1985

Total Pages: 104

ISBN-13:

DOWNLOAD EBOOK →

The purpose of this report is to evaluate free-electron laser (FEL) research and development in the Soviet Union and to compare it with the corresponding activity in the U.S. In presenting this material, the intention is to acquaint U.S. researchers with the objectives, techniques, and results of their Soviet counterparts, as well as to provide the broad context of this area of Soviet R & D that consists of the organization, facilities, personalities, and leadership involved. The U.S. Soviet comparison has focused on the experimental programs, the most important area of this new technology. Section II compares individual experiments conducted by the USSR and the United States. In Sec. III the history of the theoretical development of FEL is presented, providing an insight into the conceptual issues that shaped FEL research in both countries. The remainder of the report is devoted primarily to the Soviet side of FEL research. Section IV describes the organizational features of this research in terms of the performer institutes and leadership, focusing on the role of the Academy of Sciences, USSR. Section V analyzes the scientific objectives of Soviet FEL research, for the most part as discussed by Soviet reviewers of their research program. Section VI presents conclusions.

Lectures On The Free Electron Laser Theory And Related Topics

Lectures On The Free Electron Laser Theory And Related Topics PDF

Author: Giuseppe Dattoli

Publisher: World Scientific

Published: 1993-02-03

Total Pages: 666

ISBN-13: 9814506370

DOWNLOAD EBOOK →

Contents:Electron Beam OpticsSynchrotron Radiation: A Short DescriptionSynchrotron Radiation: Emission in Undulator MagnetsAccelerators with Radiative DumpingFree Electron Laser: An IntroductionFEL Pendulum EquationUndulator FEL DynamicsFEL Integral EquationMiscellaneous Considerations on the FEL Gain and the High-Gain LimitA Qualitative Description of Storage-Ring FEL Dynamics and Longitudinal Mode Coupling Readership: Laser physicists. keywords:Free Electron Laser;Laser;Linac;Microtron;Storage Ring;Synchrotron Radiation;Undulators;Wigglers;Bending Magnets;Coherent Radiation Sources;Beam Optics;Colson Equation;Electron Beam Transport;FEL Pendulum Equation;Gain Curve;High Gain Regime;Saturation;Small Gain Regime;Transport Channel;Magnetic Undulator

X-Ray Lasers 2014

X-Ray Lasers 2014 PDF

Author: Jorge Rocca

Publisher: Springer

Published: 2015-09-19

Total Pages: 415

ISBN-13: 3319195212

DOWNLOAD EBOOK →

These proceedings comprise invited and contributed papers presented at the 14th International Conference on X-Ray Lasers (ICXRL 2014). This conference is part of a continuing series dedicated to recent developments and applications of x-ray lasers and other coherent x-ray sources with attention to supporting technologies and instrumentation. New results in the generation of intense, coherent x-rays and progress toward practical devices and their applications in numerous fields are reported. Areas of research in plasma-based x-ray lasers, 4th generation accelerator-based sources and higher harmonic generation, and other x-ray generation schemes are covered. The scope of ICXRL 2014 included, but was not limited to: Laser-pumped X-ray lasers Discharge excitation and other X-ray laser pumping methods Injection/seeding of X-ray amplifiers New lasing transitions and novel X-ray laser schemes High Harmonic sources-Free-electron laser generation in the XUV and X-ray range Novel schemes for coherent XUV and X-ray generation XUV and X-ray optics and metrology-Driving laser technology Theory and modeling of X-ray gain medium and beam characteristics Applications of high brightness and ultrashort X-ray sources

Coherence and Ultrashort Pulse Laser Emission

Coherence and Ultrashort Pulse Laser Emission PDF

Author: F. J. Duarte

Publisher: BoD – Books on Demand

Published: 2010-12-30

Total Pages: 702

ISBN-13: 9533072423

DOWNLOAD EBOOK →

In this volume, recent contributions on coherence provide a useful perspective on the diversity of various coherent sources of emission and coherent related phenomena of current interest. These papers provide a preamble for a larger collection of contributions on ultrashort pulse laser generation and ultrashort pulse laser phenomena. Papers on ultrashort pulse phenomena include works on few cycle pulses, high-power generation, propagation in various media, to various applications of current interest. Undoubtedly, Coherence and Ultrashort Pulse Emission offers a rich and practical perspective on this rapidly evolving field.