Download or read book An Inverse Free Electron Laser Accelerator written by and published by . This book was released on 1997 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental and numerical studies of the Inverse Free Electron Laser using a GW-level 10.6 [mu]m CO2 laser have been carried out at Brookhaven's Accelerator Test Facility. An energy gain of 2.5 % ([Delta]E/E) on a 40 MeV electron beam has been observed E which compares well with theory. The effects on IFEL acceleration with respect to the variation of the laser electric field, the input electron beam energy, and the wiggler magnetic field strength were studied, and show the importance of matching the resonance condition in the IFEL. The numerical simulations were performed under various conditions and the importance of the electron bunching in the IFEL is shown. The numerical interpretation of our IFEL experimental results was examined. Although good numerical agreement with the experimental results was obtained, there is a discrepancy between the level of the laser power measured in the experiment and used in the simulation, possibly due to the non-Gaussian profile of the input high power laser beam. The electron energy distribution was studied numerically and a smoothing of the energy spectrum by the space charge effect at the location of the spectrometer was found, compared with the spectrum at the exit of the wiggler. The electron bunching by the IFEL and the possibility of using the IFEL as an electron prebuncher for another laser-driven accelerator were studied numerically. We found that bunching of the electrons at 1 meter downstream from the wiggler can be achieved using the existing facility. The simulation shows that there is a fundamental difference between the operating conditions for using the IFEL as a high gradient accelerator, and as a prebuncher for another accelerator.
Download or read book An Inverse Free Electron Laser Accelerator Experiment written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A free electron laser was configured as an autoaccelerator to test the principle of accelerating electrons by stimulated absorption of radiation ([lambda] = 1.65mm) by an electron beam (750kV) traversing an undulator. Radiation is produced in the first section of a constant period undulator (1[sub w1] = 1.43cm) and then absorbed ([approximately] 40%) in a second undulator, having a tapered period (1[sub w2] = 1.8 [minus] 2.25cm), which results in the acceleration of a subgroup ([approximately] 9%) of electrons to [approximately] 1MeV.
Download or read book An Inverse Free Electron Laser Accelerator written by and published by . This book was released on 1993 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent work at BNL on electron acceleration using the Inverse Free-Electron Laser (IFEL) has considered a low-energy, high-gradient, multi-stage linear accelerator. Experiments are planned at BNLs̀ Accelerator Test Facility using its 50-MeV linac and 100-GW CO2 laser. We have built and tested a fast-excitation wiggler magnet with constant field, tapered period, and overall length of 47 cm. Vanadium-Permendur ferromagnetic laminations are stacked in alternation with copper, eddy-current-induced, field reflectors to achieve a 1.4-T peak field with a 4-mm gap and a typical period of 3 cm. The laser beam will pass through the wiggler in a low-loss, dielectric-coated stainless-steel, rectangular waveguide. The attenuation and transverse mode has been measured in waveguide sections of various lengths, with and without the dielectric. Results of 1-D and 3-D IFEL simulations, including wiggler errors, will be presented for several cases: the initial, single-module experiment with?E = 39 MeV, a four-module design giving?E = 100 MeV in a total length of 2 m, and an eight-module IFEL with?E = 210 MeV.
Download or read book The Theory and Design of a Chirped pulse Inverse Free electron Laser written by Anthony Lawrence Troha and published by . This book was released on 2003 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Inverse Free Electron Laser Accelerator written by Jyan-Min Fang and published by . This book was released on 1997 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The LLNL UCLA High Gradient Inverse Free Electron Laser Accelerator written by and published by . This book was released on 2012 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acceleration of Electrons Using an Inverse Free Electron Laser Auto accelerator written by Iddo Kalir Wernick and published by . This book was released on 1992 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inverse Free electron Laser Accelerator written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We first describe the basic physical properties of an inverse free-electron laser and make an estimate of the order of magnitude of the accelerating field obtainable with such a system; then apply the general ideas to the design of an actual device and through this example we give a more accurate evaluation of the fundamental as well as the technical limitations that this acceleration scheme imposes.
Download or read book Inverse Free electron Laser Accelerator Development written by and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of the Inverse Free-Electron Laser, as a potential mode of electron acceleration, has been pursued at Brookhaven National Laboratory for a number of years. More recent studies focused on the development of a low energy (few GeV), high gradient, multistage linear accelerator. The authors are presently designing a short accelerator module which will make use of the 50 MeV linac beam and high power (2 × 1011 W) CO2 laser beam of the Accelerator Test Facility (ATF) at the Center for Accelerator Physics (CAP), Brookhaven National Laboratory. These elements will be used in conjunction with a fast excitation (300 [mu]sec pulse duration) variable period wiggler, to carry out an accelerator demonstration stage experiment.
Download or read book Acceleration of Electrons Using an Inverse Free Electron Laser Auto Accelerator written by and published by . This book was released on 1992 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present data from our study of a device known as the inverse free electron laser. First, numerical simulations were performed to optimize the design parameters for an experiment that accelerates electrons in the presence of an undulator by stimulated absorption of radiation. The Columbia free electron laser (FEL) was configured as an auto-accelerator (IFELA) system; high power (MW's) FEL radiation at (approximately)1.65 mm is developed along the first section of an undulator inside a quasi-optical resonator. The electron beam then traverses a second section of undulator where a fraction of the electrons is accelerated by stimulated absorption of the 1.65 mm wavelength power developed in the first undulator section. The second undulator section has very low gain and does not generate power on its own. We have found that as much as 60% of the power generated in the first section can be absorbed in the second section, providing that the initial electron energy is chosen correctly with respect to the parameters chosen for the first and second undulators. An electron momentum spectrometer is used to monitor the distribution of electron energies as the electrons exit the IFELA. We have found; using our experimental parameters, that roughly 10% of the electrons are accelerated to energies as high as 1100 keV, in accordance with predictions from the numerical model. The appearance of high energy electrons is correlated with the abrupt absorption of millimeter power. The autoaccelerator configuration is used because there is no intense source of coherent power at the 1.65 mm design wavelength other than the FEL.
Download or read book An Inverse Free electron laser Accelerator written by and published by . This book was released on 1992 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inverse Free Electron Laser Beat wave Accelerator Research written by and published by . This book was released on 1992 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past twelve-month period, we have completed our experimental study of the inverse-FEL autoaccelerator. The IFEL accelerates electrons by stimulated absorption of a laser pulse passing along an electron beam in an undulator; the autoaccelerator is a configuration we have developed at Columbia to test the principle of resonant absorption and acceleration. This report discusses the progress of this research.
Download or read book Design and Operation of an Inverse free electron laser Accelerator in the Microwave Regime written by Rodney Bruce Yoder and published by . This book was released on 2000 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Demonstration of Cascaded Optical Inverse Free Electron Laser Accelerator written by and published by . This book was released on 2013 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First Experimental Results of the BNL Inverse Free Electron Laser Accelerator written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A 40 MeV electron beam, using the inverse3e free-electron laser interaction, has been accelerated by[Delta]E/E= 2.5% over a distance of 0.47 m. The electrons interact with a 1--2 GW CO[sub 2] laser beam bounded by a 2.8 mm ID sapphire circular waveguide in the presence of a tapered wiggler with Bmax[approx] 1 T and a period 2.89 cm[le][lambda][sub w][le] 3.14 cm. The experimental results of[Delta]E/E as a function of electron energy E, peak magnetic field Bw and laser power W[sub 1] compare well with analytical and 1-D numerical simulations and permit scaling to higher laser power and electron energy.
Download or read book Free electron Lasers written by Thomas C. Marshall and published by . This book was released on 1985 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Charged Beam Dynamics Particle Accelerators and Free Electron Lasers written by G. Dattoli and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Charged Beam Dynamics, Particle Accelerators and Free Electron Lasers' summarises different topics in the field of accelerators and of Free Electron Laser (FEL) devices. It explains how to design both an FEL device and the accelerator providing the driving beam. Covering both theoretical and experimental aspects, this book allows researchers to attempt a first design of an FEL device."--Prové de l'editor.
