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Vacuum Laser Acceleration
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Download or read book Vacuum Laser Acceleration written by and published by . This book was released on 1995 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this communication is to comment on and discuss laser acceleration of electrons in vacuum. In particular, we will: (1) critique the recent paper by C.M. Haaland, titled "Laser Electron Acceleration in Vacuum," (2) discuss some general features and characteristics of laser acceleration in vacuum, and (3) propose a vacuum laser acceleration concept called the "vacuum beat wave accelerator."
Book Synopsis Laser Driven Electron Acceleration in Vacuum, Gases and Plasmas by :
Download or read book Laser Driven Electron Acceleration in Vacuum, Gases and Plasmas written by and published by . This book was released on 1996 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper discusses some of the important issues pertaining to laser acceleration in vacuum, neutral gases and plasmas. The limitations of laser vacuum acceleration as they relate to electron slippage, laser diffraction, material damage and electron aperture effects, are discussed. An inverse Cherenkov laser acceleration configuration is presented in which a laser beam is self guided in a partially ionized gas. Optical self guiding is the result of a balance between the nonlinear self focusing properties of neutral gases and the diffraction effects of ionization. The stability of self guided beams is analyzed and discussed. In addition, aspects of the laser wakefield accelerator are presented and laser driven accelerator experiments are briefly discussed.
Book Synopsis Vacuum Electron Acceleration by an Intense Laser by :
Download or read book Vacuum Electron Acceleration by an Intense Laser written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using 3D test particle simulations, the characteristics and essential conditions under which an electron, in a vacuum laser beam, can undergo a capture and acceleration scenario (CAS). When a0 ≈> 100 the electron can be captured and violently accelerated to energies ≈> 1 GeV, with an acceleration gradient ≈> 10 GeV/cm, where a0 = eE0/m{sub e}[omega]c is the normalized laser field amplitude. The physical mechanism behind the CAS is that diffraction of the focused laser beam leads to a slowing down of the effective wave phase velocity along the captured electron trajectory, such that the electron can be trapped in the acceleration phase of the wave for a longer time and thus gain significant energy from the field.
Book Synopsis Subluminous Phase Velocity of a Focused Laser Beam and Vacuum Laser Acceleration by :
Download or read book Subluminous Phase Velocity of a Focused Laser Beam and Vacuum Laser Acceleration written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Critical Issues for Vacuum Laser Acceleration by :
Download or read book Critical Issues for Vacuum Laser Acceleration written by and published by . This book was released on 2004 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent technological progress in lasers has renewed interest in applying high power lasers to accelerate charged particles. Outstanding gains in efficiency and power, and the first demonstration of optical phase-locking have moved the laser closer to competitive standing with microwave vacuum tubes as power sources for accelerators. We explore some of the questions that will determine the suitability of both low-field (a0 “1) and high-field (a0> 1) acceleration methods, and identify some of the challenges ahead. Possible applications include a laser-driven linear collider and novel, compact particle and radiation sources, each with its own performance requirements.
Book Synopsis Chirped Pulse Inverse Free-electron Laser Vacuum Accelerator by :
Download or read book Chirped Pulse Inverse Free-electron Laser Vacuum Accelerator written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A chirped pulse inverse free-electron laser (IFEL) vacuum accelerator for high gradient laser acceleration in vacuum. By the use of an ultrashort (femtosecond), ultrahigh intensity chirped laser pulse both the IFEL interaction bandwidth and accelerating gradient are increased, thus yielding large gains in a compact system. In addition, the IFEL resonance condition can be maintained throughout the interaction region by using a chirped drive laser wave. In addition, diffraction can be alleviated by taking advantage of the laser optical bandwidth with negative dispersion focusing optics to produce a chromatic line focus. The combination of these features results in a compact, efficient vacuum laser accelerator which finds many applications including high energy physics, compact table-top laser accelerator for medical imaging and therapy, material science, and basic physics.
Book Synopsis Laser-driven Electron Acceleration in Infinite Vacuum by : Liang Jie Wong
Download or read book Laser-driven Electron Acceleration in Infinite Vacuum written by Liang Jie Wong and published by . This book was released on 2011 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: I first review basic models for laser-plasma interaction that explain electron acceleration and beam confinement in plasma. Next, I discuss ponderomotive electron acceleration in infinite vacuum, showing that the transverse scattering angle of the accelerated electron may be kept small with a proper choice of parameters. I then analyze the direct (a.k.a. linear) acceleration of an electron in infinite vacuum by a pulsed radially-polarized laser beam, consequently demonstrating the possibility of accelerating an initially-relativistic electron in vacuum without the use of ponderomotive forces or any optical devices to terminate the laser field. As the Lawson-Woodward theorem has sometimes been cited to discount the possibility of net energy transfer from a laser pulse to a relativistic particle via linear acceleration in unbounded vacuum, I derive an analytical expression (which I verify with numerical simulation results) defining the regime where the Lawson-Woodward theorem in fact allows for this. Finally, I propose a two-color laser-driven direct acceleration scheme in vacuum that can achieve electron acceleration exceeding 90% of the one-color theoretical energy gain limit, over twice of what is possible with a one-color pulsed beam of equal total energy and pulse duration.
Book Synopsis Laser Acceleration in Vacuum with an Open Iris-Loaded Structure by :
Download or read book Laser Acceleration in Vacuum with an Open Iris-Loaded Structure written by and published by . This book was released on 1997 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: An open iris-loaded waveguide structure is considered for laser acceleration of highly relativistic particle in vacuum. Complete characterization of eigenmodes are given in analytical form for the structure. In particular acceleration performance of the dominant TM mode is evaluated in detail. Transparent scaling laws are derived, and through which significant advantages over other vacuum laser acceleration schemes are demonstrated. The entire parameter space is searched and it is found that below the laser damage threshold of the structure an acceleration gradient around 1 GV/m can be obtained over a phase slippage length of 10s of cm with TWs laser in the wavelength range from 1 to 10 [mu]m.
Book Synopsis Laser Acceleration in Vacuum, Gases, and Plasmas Withcapillary Waveguide by :
Download or read book Laser Acceleration in Vacuum, Gases, and Plasmas Withcapillary Waveguide written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: I propose a new method for laser acceleration of relativistic electrons using the leaky modes of a hollow dielectric waveguide. The hollow core of the waveguide can be either in vacuum or filled with uniform gases or plasmas. In case of vacuum and gases, TM01 mode is used for direct acceleration. In case of plasmas, EH11 mode is used to drive longitudinal plasma wave for acceleration. Structure damage due to high power laser can be avoided by choosing a core radius sufficiently larger than laser wavelength. Effect of nonuniform plasma density on waveguide performance is also analyzed.
Book Synopsis Calculation and Optimization of Laser Acceleration in Vacuum by :
Download or read book Calculation and Optimization of Laser Acceleration in Vacuum written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extraordinarily high fields generated by focused lasers are envisioned to accelerate particles to high energies. In this paper, we develop a new method to calculate laser acceleration in vacuum based on the energy exchange arose from the interference of the laser field with the radiation field of the particle. We apply this method to a simple accelerating structure, a perfectly conducting screen with a round hole, and show that how to optimize the energy gain with respect to the hole radius, laser angle and spot size, as well as the transverse profile of the laser. Limitation and energy scaling of this acceleration method are also discussed.
Book Synopsis Proof-of-principle Experiment for Crossed Laser Beam Electron Acceleration in a Dielectric Loaded Vacuum Structure by : Tomas Plettner
Download or read book Proof-of-principle Experiment for Crossed Laser Beam Electron Acceleration in a Dielectric Loaded Vacuum Structure written by Tomas Plettner and published by . This book was released on 2002 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Acceleration in Vacuum and Gases with Capillary Waveguide by :
Download or read book Laser Acceleration in Vacuum and Gases with Capillary Waveguide written by and published by . This book was released on 1999 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unified framework is developed to overcome all three major limitations on acceleration and distance and hence on the feasibility of two classes of laser acceleration. The three limitations are due to laser diffraction, acceleration phase slippage, and structure damage by high power laser if solid-state optical waveguide is used. The two classes of laser acceleration are direct-field acceleration and ponderomotive-driven acceleration. Thus this letter and its companion [1] provide solutions that are crucial to all mainstream approaches for laser acceleration, either in vacuum, gases or plasmas.
Book Synopsis Ponderomotive Laser Acceleration and Focusing in Vacuum by :
Download or read book Ponderomotive Laser Acceleration and Focusing in Vacuum written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A novel approach for the generation of ultrabright attosecond electron bunches is proposed, based on acceleration in vacuum by a short laser pulse. The laser pulse profiles is tailored such that the electrons are both focused and accelerated by the ponderomotive force of the light. Using time-averaged equations of motion analytical criteria for optimal regime of acceleration are found. It is shown that for realistic laser parameters a beam with up to 106 particles and normalized transverse and longitudinal emittances
Book Synopsis Laser Acceleration in Vacuum with an Open Iris-loaded Waveguide by :
Download or read book Laser Acceleration in Vacuum with an Open Iris-loaded Waveguide written by and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: An open iris-loaded waveguide structure is considered for laser acceleration of highly relativistic particle in vacuum. Complete characterization of all eigenmodes are given in analytical form for the structure. In particular the dominant radially polarized TM mode is evaluated in detail for laser acceleration. The entire parameter space is searched and it is found that below the laser damage threshold of the structure an acceleration gradient around 1 GV/m can be obtained over a phase slippage length of 10s of cm with TWs laser in the wavelength range from 1 to 10 [mu]m.
Book Synopsis Structure Loaded Vacuum Laser-Driven Particle Acceleration Experiments at SLAC. by :
Download or read book Structure Loaded Vacuum Laser-Driven Particle Acceleration Experiments at SLAC. written by and published by . This book was released on 2007 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an overview of the future laser-driven particle acceleration experiments. These will be carried out at the E163 facility at SLAC. Our objectives include a reconfirmation of the proof-of-principle experiment, a staged buncher laser-accelerator experiment, and longer-term future experiments that employ dielectric laser-accelerator microstructures.
Book Synopsis Enhanced Direct Laser Vacuum Acceleration of a Charged Particle in Crossing Plane-wave Laser Beams by :
Download or read book Enhanced Direct Laser Vacuum Acceleration of a Charged Particle in Crossing Plane-wave Laser Beams written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Wakefield Electron Acceleration by : Karl Schmid
Download or read book Laser Wakefield Electron Acceleration written by Karl Schmid and published by Springer Science & Business Media. This book was released on 2011-05-18 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis covers the few-cycle laser-driven acceleration of electrons in a laser-generated plasma. This process, known as laser wakefield acceleration (LWFA), relies on strongly driven plasma waves for the generation of accelerating gradients in the vicinity of several 100 GV/m, a value four orders of magnitude larger than that attainable by conventional accelerators. This thesis demonstrates that laser pulses with an ultrashort duration of 8 fs and a peak power of 6 TW allow the production of electron energies up to 50 MeV via LWFA. The special properties of laser accelerated electron pulses, namely the ultrashort pulse duration, the high brilliance, and the high charge density, open up new possibilities in many applications of these electron beams.
