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Phase Space Manipulations Of Electron Beams For X Ray Free Electron Lasers And Inverse Compton Scattering Sources
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Book Synopsis Phase-space Manipulations of Electron Beams for X-ray Free-electron Lasers and Inverse Compton Scattering Sources by : A. V. Malyzhenkov
Download or read book Phase-space Manipulations of Electron Beams for X-ray Free-electron Lasers and Inverse Compton Scattering Sources written by A. V. Malyzhenkov and published by . This book was released on 2018 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes advanced techniques of phase space manipulations of the electron beam for improving performance and efficiency of high brightness X-ray light sources based on the free-electron Laser (FEL) and inverse-Compton scattering (ICS) processes. In particular, it first discusses a novel bunch-compression scheme based on a double transverse-to-longitudinal phase-space exchanger - dubbed emittance exchanger (EEX) - separated by a demagnifying transverse-optics system. While the outline of the scheme is quite sophisticated, the basic physics behind it is quite straight-forward. The benefits and disadvantages of these scheme are compared to the conventional approach of compressing a bunch using a magnetic bunch-compression chicane. The second scheme discussed in this dissertation is a novel beamline for imposing and removing the energy slew along the bunch also known as chirping and dechirping the beam in the accelerator community. This scheme consists of transverse deflecting cavities separated by drifts and relies on imposing and removing the transverse-longitudinal correlations on the electron beam. The benefits of this alternative method are compared with standard schemes of chirping and dechirping the beam via an off-crest acceleration. Finally, a novel 6-dimensional theory of the ICS source concludes this dissertation. It derives the photon distribution in 6D phase space describing radiation produced in the process of scattering a laser pulse off a relativistic electron beam as a function of electron distribution in the phase space using the Wigner function formalism. This result opens up the possibility for the optimization of the brightness of an ICS source via imposing transverse-longitudinal correlations on the beam.
Book Synopsis Physics And Applications Of High Brightness Electron Beams, The - Proceedings Of The 46th Workshop Of The Infn Eloisatron Project by : Luigi Palumbo
Download or read book Physics And Applications Of High Brightness Electron Beams, The - Proceedings Of The 46th Workshop Of The Infn Eloisatron Project written by Luigi Palumbo and published by World Scientific. This book was released on 2007-09-27 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings comprise cutting-edge contributions by researchers at the frontiers of beam physics, free-electron-based light sources, and advanced accelerators. It represents a snap-shot of activity in these fields at a critical historical juncture, where rapid experimental progress is being reported, and new facilities such as X-ray free-electron lasers are under construction. The volume features invited contributions from leading researchers from the international beam physics community that summarize the state-of-the-art research in individual topics, as well as timely contributions from participants that arose during the workshop itself.
Book Synopsis Electron Beam Manipulations at the Angstrom Level and Attosecond Timescale for X-ray FELs by : James Paton MacArthur
Download or read book Electron Beam Manipulations at the Angstrom Level and Attosecond Timescale for X-ray FELs written by James Paton MacArthur and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray Free-Electron Lasers (FELs) like the Linac Coherent Light Source (LCLS) have now operated for a decade, delivering linearly polarized pulses as short as a few femtoseconds to users. I will discuss two experiments and associated theoretical developments on manipulating the FEL gain medium -- a relativistic electron beam -- in order to extend the capabilities of LCLS. The first is the production of isolated, circularly polarized x-ray pulses with a helical undulator and non-intuitive electron microbunch rotation. The microbunch rotation required for isolating circular pulses is also useful to multiplex LCLS and for outcoupling radiation from cavity-based FELs. The second project is on the production of sub-femtosecond x-ray pulses with a tailored electron beam phase space. We tailor the longitudinal phase space of the electron beam core with coherent radiation from the electron beam tail produced in a magnetic undulator. The resultant x-ray pulses contain six orders of magnitude more energy than otherwise comparable sub-femtosecond x-ray sources. These two projects involved relativistic electron beams interacting with radiation in previously unexplored parameter regimes. We therefore also discuss several theoretical contributions and associated simulation work. In particular, we present an improved understanding of coherent radiation from a kicked electron beam, undulator impedance, reverse tapered undulators, and rest-frame simulation of FELs.
Book Synopsis Electron-beam Sources of High-brightness Radiation by : Henry P. Freund
Download or read book Electron-beam Sources of High-brightness Radiation written by Henry P. Freund and published by . This book was released on 1993 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Principle and Design of a High-efficiency Free-electron Laser by : Adrian Hsiu-Tze Ho
Download or read book The Principle and Design of a High-efficiency Free-electron Laser written by Adrian Hsiu-Tze Ho and published by . This book was released on 1991 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Collective Dynamics and Coherent Diagnostics of Microbunched Relativistic Electron Beams by : Agostino Marinelli
Download or read book Collective Dynamics and Coherent Diagnostics of Microbunched Relativistic Electron Beams written by Agostino Marinelli and published by . This book was released on 2012 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: The x-ray free-electron laser has established itself as the brightest available source of x-rays, extending the coherence and brilliance properties of conventional atomic lasers down to the sub-Angstrom level. The high-brightness electron beams that are used to drive the free-electron laser process, undergo a number of collective instabilities that can generate complex phase-space structures and induce the emission of coherent radiation, an effect that is generally termed microbunching instability. The main subject of this dissertation is the collective evolution of beam mi- crobunching under the effect of longitudinal space-charge forces. We develop a three-dimensional kinetic theory of space-charge effects leading to collective suppression and amplification of beam microbunching. This model gives, for the first time, a fully self-consistent description of the space-charge instability, with the inclusion of three-dimensional and thermal effects. After establishing a self-consistent theoretical foundation for space-charge effects, we present two experiments related to the space-charge instability. The generation of broad- band coherent undulator radiation with a longitudinal space-charge amplifier is demonstrated experimentally for the first time. This experiment extends the capabilities of free-electron laser facilities by allowing the generation of coherent broadband radiation pulses, thus accessing regimes of operation currently unavailable for fourth generation light sources. Finally a coherent diffraction imaging technique for the reconstruction of beam microbunching is designed and experimentally tested. This technique is based on the application of an oversampling phase-retrieval method to the far-field coherent transition radiation emitted by a microbunched electron beam and has applications in the diagnostic of compressed electron beams and free-electron lasers. While the microbunching instability is generally regarded as a detrimental effect, this work shows that the coherent effects associated with the induced microbunching can be optimized and used to our advantage for the development of new coherent radiation sources and advanced beam diagnostics.
Book Synopsis Free Electron Lasers and Stimulated Scattering from Relativistic Electron Beams by : P. Sprangle
Download or read book Free Electron Lasers and Stimulated Scattering from Relativistic Electron Beams written by P. Sprangle and published by . This book was released on 1978 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Free electron lasers based on stimulated scattering from relativistic electron beams show potential for a new class of coherent radiation sources ranging from millimeter wavelengths down to optical wavelengths and beyond which are characterized by continuous tunability, very high power levels and competitive efficiencies. Here we present a comprehensive fully-relativistic treatment of stimulated backscattering from an electron beam with streaming velocity beta(sub zo)c. The incident pump wave is taken to be a static, circularly polarized, periodic magnetic field with wavenumber K sub O; the frequency of the scattered radiation is beta(sub zo) ck(sub O)/1-beta(sub zo). The analysis is linear in the scattered wave fields, but contains the pump field to all orders. The physical mechanism of the backscattering is provided by the v X B ponderomotive forces acting on the beam electrons in the presence of both the pump and the scattered waves. This force produces a longitudinal charge bunching which in turn gives rise to source currents for the scattered waves.
Book Synopsis Investigation of Nonrelativistic Electron Beam Trapping in a Compton Scattering Free Electron Laster Scheme by : Robert Zev Olshan
Download or read book Investigation of Nonrelativistic Electron Beam Trapping in a Compton Scattering Free Electron Laster Scheme written by Robert Zev Olshan and published by . This book was released on 1987 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Longitudinal Phase Space Manipulation in Energy Recovering Linac-driven Free-electron Lasers by :
Download or read book Longitudinal Phase Space Manipulation in Energy Recovering Linac-driven Free-electron Lasers written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy recovering an electron beam after it has participated in a free-electron laser (FEL) interaction can be quite challenging because of the substantial FEL-induced energy spread and the energy anti-damping that occurs during deceleration. In the Jefferson Lab infrared FEL driver-accelerator, such an energy recovery scheme was implemented by properly matching the longitudinal phase space throughout the recirculation transport by employing the so-called energy compression scheme. In the present paper, after presenting a single-particle dynamics approach of the method used to energy-recover the electron beam, we report on experimental validation of the method obtained by measurements of the so-called ''compression efficiency'' and ''momentum compaction'' lattice transfer maps at different locations in the recirculation transport line. We also compare these measurements with numerical tracking simulations.
Book Synopsis Application of Electron Beams in Space for Energy Storage and Optical Beam Generation by : Robert M. Salter
Download or read book Application of Electron Beams in Space for Energy Storage and Optical Beam Generation written by Robert M. Salter and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination is made of the potential for in-space-propagated electron beams for storage rings that buffer solar energy collected in low-orbit-altitude satellites. An example case in a 3000-mile equatorial orbit utilizes a nine-beam helical configuration to store 5.8 TJ in 60 MeV electrons. Electron energized optical and rf generators are covered including transmission of a 3 GW synchrotron radiation beam of lambda sub c = 1000A over 6000 km to a ground receiver with an 827 m aperture. (Author).
Book Synopsis Extreme Electron Beams and Brilliant X-rays by :
Download or read book Extreme Electron Beams and Brilliant X-rays written by and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis LONGITUDINAL PHASE SPACE CHARACTERIZATION OF ELECTRON BUNCHES AT THE JLAB FEL FACILITY. by : George Neil
Download or read book LONGITUDINAL PHASE SPACE CHARACTERIZATION OF ELECTRON BUNCHES AT THE JLAB FEL FACILITY. written by George Neil and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report longitudinal phase space measurements of short electron bunches at the 10kW Free-Electron Laser Facility at Jefferson Lab using broadband synchrotron radiation and a remotely controlled fast streak camera. Accurate measurements are possible because the optical transport system uses only reflective components that do not introduce dispersion. The evolution of longitudinal phase space of the electron beam can be observed in real time while phases of accelerator RF components are being adjusted. This fast and efficient diagnostic enhances the suite of machine setup tools available to JLab FEL operators and applies to other accelerators. The results for certain beam setups will be presented.
Book Synopsis Interaction of Free Electrons with an Ultra-intense Laser by : Fei He
Download or read book Interaction of Free Electrons with an Ultra-intense Laser written by Fei He and published by . This book was released on 2004 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron Beam Dynamics with and Without Compton Back Scattering by : Illya Drebot
Download or read book Electron Beam Dynamics with and Without Compton Back Scattering written by Illya Drebot and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis introduce my work on transverse and longitudinal non linear dynamics of an electron beam in ThomX, a novel X-ray source based on Compton backscattering. In this work I implemented in simulation code theoretical models to calculate transverse and longitudinal non linear dynamics under Compton back scattering. The processes studied include collective effect such as longitudinal space charge, resistive wall and coherent synchrotron radiation, intra beam scattering. I also implemented a longitudinal feedback algorithm and studied the effect of the feedback's delay in the simulation to explore its effects on beam dynamics. This code allows to perform a full 6D simulation of the beam dynamics in a ring under Compton back scattering taking into account the feedback stabilisation for the 400 000 turns (~ 20 ms) of one injection cycle. One important feature is that this simulation code can be run on a computer farm. Using this code I investigated the electrons dynamics in ThomX and the flux of scattered Compton photons. I analysed the relative contribution of each physical phenomena to the overall beam dynamics and how to mitigate their disruptive effect. As part of my work on longitudinal phase feedback I also measured and analysed properties of the ELETTRA RF cavity to be used on ThomX.
Book Synopsis Nonlinear Dynamics & Phase Space Manipulation of High-Brightness Electron Beams by :
Download or read book Nonlinear Dynamics & Phase Space Manipulation of High-Brightness Electron Beams written by and published by . This book was released on 2014 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report summarizes the main results of the research carried under contract.
Book Synopsis Synchrotron Light Sources and Free-Electron Lasers by : Eberhard J. Jaeschke
Download or read book Synchrotron Light Sources and Free-Electron Lasers written by Eberhard J. Jaeschke and published by Springer. This book was released on 2016-05-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hardly any other discovery of the nineteenth century did have such an impact on science and technology as Wilhelm Conrad Röntgen’s seminal find of the X-rays. X-ray tubes soon made their way as excellent instruments for numerous applications in medicine, biology, materials science and testing, chemistry and public security. Developing new radiation sources with higher brilliance and much extended spectral range resulted in stunning developments like the electron synchrotron and electron storage ring and the freeelectron laser. This handbook highlights these developments in fifty chapters. The reader is given not only an inside view of exciting science areas but also of design concepts for the most advanced light sources. The theory of synchrotron radiation and of the freeelectron laser, design examples and the technology basis are presented. The handbook presents advanced concepts like seeding and harmonic generation, the booming field of Terahertz radiation sources and upcoming brilliant light sources driven by laser-plasma accelerators. The applications of the most advanced light sources and the advent of nanobeams and fully coherent x-rays allow experiments from which scientists in the past could not even dream. Examples are the diffraction with nanometer resolution, imaging with a full 3D reconstruction of the object from a diffraction pattern, measuring the disorder in liquids with high spatial and temporal resolution. The 20th century was dedicated to the development and improvement of synchrotron light sources with an ever ongoing increase of brilliance. With ultrahigh brilliance sources, the 21st century will be the century of x-ray lasers and their applications. Thus, we are already close to the dream of condensed matter and biophysics: imaging single (macro)molecules and measuring their dynamics on the femtosecond timescale to produce movies with atomic resolution.
Book Synopsis Investigation of Nonrelativistic Electron Beam Trapping in a Compton Scattering Free Electron Laser Scheme by : Robert Zev Olshan
Download or read book Investigation of Nonrelativistic Electron Beam Trapping in a Compton Scattering Free Electron Laser Scheme written by Robert Zev Olshan and published by . This book was released on 1987 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
