Summary:  Accelerator Laboratory [7] whose goal is to reach an average power of 1 kW at a wavelength of 3 microns... untrapped to trapped orbits. The interaction proceeds somewhat differently for low-gain FEL oscillators... , sidebands can play an important role in FEL ...

Source: Thomas Jefferson National Accelerator Facility

Collection: Physics

Summary:  of Engineering, TelAuiv University,Ramat Aviv 69978, Israel The integrated-FEL concept is proposed as an alter... - native approach for the discrete compact-FELs [1]. In the proposed integrated-FEL, the accelerator... and the wiggler are integrated for the sake of compaction. Two examples of integrated-FEL ...

Source: Jerby, Eli - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

Collection: Engineering ; Geosciences

Summary:  the remainder of this paper we shall use only dimensionless quantities with mc as the unit of momentum, 1/kw... is easily carried out. PROPOSED EXPERIMENT AND ITS RELATION TO FELS The experiment E-166 at SLAC proposes... 't be classed as a Free Electron Laser (FEL), it does resemble many ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  HIGH GAIN FEL AMPLIFICATION OF CHARGE MODULATION CAUSED BY A HADRON * Vladimir N. Litvinenko... in a high gain FEL. The resulting amplified modulation of electron beam, its shape, form and its lethargy... ]). We also discuss the influence of the electron beam parameters on the FEL response. INTRODUCTION

Source: Brookhaven National Laboratory, Collider-Accelerator Department, Superconducting Accelerator and RHIC Electron Cooling Group

Collection: Physics

Summary:  transverse modes. The FEL oscillator cavity is terminated at both ends by mirrors with holes at the centers... and higher frequency ranges, respectively. Fig. 3a shows for instance a normal FEL oscillator behavior... ;corresponding decrease in the FEL oscillation ...

Source: Jerby, Eli - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

Collection: Engineering ; Geosciences

Summary:  of FEL oscillators, high-gain FEL and self-amplified spontaneous emission, electron beam requirements, rf... and coherence will be further enhanced by developing free-electron lasers (FELs). This course will provide... (FELs) Interaction of radiation and particle beam, pendulum equation, ...

Source: Experimental High Energy Physics

Collection: Plasma Physics and Fusion ; Physics

Summary:  dimensionless quantities with mc as the unit of momentum, 1/kw the unit of length and ckw the unit of frequency... and Bekefi performed an experiment with a low-energy free electron laser (FEL) operating in the amplifier... in the transverse direction. Both beam and FEL measurements were carried out. In ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  synchrotron oscillation which modify the electronic density and prevent lasing [13]. FEL shifts are thus... cedex 05,France ABSTRACT :Storage ring (SR) Free Electron Lasers (FEL) are very promising tunable laser... sources in the UV. The Super-ACO UV FEL at 800 MeV was recently improved : enhanced power ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  were awarded a three-year Major Research Instrumentation grant from the NSF to upgrade the UCSB FELs... in significant ways. One main goal is to upgrade the control system for the FEL to make it more stable, user... - friendly, have higher resolution, and ultimately double the high-frequency end of the FEL's tuning range

Source: Ahlers, Guenter - Department of Physics, University of California at Santa Barbara

Collection: Physics

Summary:  -electron laser FEL oscillator is demonstrated. This FEL-type experiment em- ploys low-energy electrons, down to 0... . Coherent oscillations are observed at the fundamental cavity mode, around 270 MHz. By varying the fluid... of a variable dielectric loading on the FEL tunability in ...

Source: Jerby, Eli - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

Collection: Engineering ; Geosciences

Summary:  ) at high FEL powers (> 1 kW cm-2 ) non-resonant heating results in Shubnikov­de Haas type oscillations... at an FEL frequency of 84 cm-1 and (B) sample 6 at a frequency of 22 cm-1. Oscillations... in the wires by FEL radiation as the cause of ...

Source: Kono, Junichiro - Department of Electrical and Computer Engineering, Rice University

Collection: Engineering ; Physics

Summary:  , EEHG, electron gun, emittance, HGHG, FEL, femtosecond, linac, oscillator, SASE, self-seeding, XFELO, x... temporal coherence is to use an FEL in an oscillator configuration. The principles of an FEL oscillator... rate of the electron bunches. As shown in [44], the ...

Source: Kemner, Ken - Biosciences Division, Argonne National Laboratory

Collection: Environmental Sciences and Ecology ; Environmental Management and Restoration Technologies

Summary:  the transverse mode structure of tapered-wiggler free-electron laser (FEL) oscillators. This approach accounts... MODE STRUCTURE OF A TAPERED-W IGGLER F E L OSCILLATOR * D. Quimby and J. Slater Mathematical Sciences... to two Rayleigh ranges of the optical beam; this geometry approximately optimizes the FEL ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  can be applied to a free-electron laser (FEL) amplifier. Placing magnetic chicanes between undulator... -mode structure on the signal generated by the FEL, similar to the longitudinal modes of a conventional laser... cavity. At resonance in an FEL, a radiation wave front propagates (slips) Nu resonant wavelengths through

Source: Kemner, Ken - Biosciences Division, Argonne National Laboratory

Collection: Environmental Sciences and Ecology ; Environmental Management and Restoration Technologies

Summary:  National Accelerator Facility, Newport News, Virginia 23606 USA ABSTRACT Free Electron Lasers (FELs) have... , the resonator mirrors of the oscillator are vulnerable to damage because of the small beam size in the undulator... . We present a description of an FEL that uses a resonator with a short Rayleigh length in order

Source: Thomas Jefferson National Accelerator Facility

Collection: Physics

Summary:  for polarized gun: Kw = eBwlw 2pmc2 l = lw 2g 2 1+ Kw 2 ( ) #12;703.75 MHz SRF cavity Final Design Review... of 1034 cm-2sec-1 per nucleon ­ 10-25 GeV SRF ERL for eRHIC ­ SRF ERL based an FEL -driver for high... .8 ' 90 FEL ext. efficiency up to 0.75% FEL power (kW) 6 ' 670 ...

Source: Brookhaven National Laboratory, Collider-Accelerator Department, Superconducting Accelerator and RHIC Electron Cooling Group

Collection: Physics

Summary:  mixers, they cannot be used for homodyne detection because local oscillator and measurement signal have... are efficient, high damage threshold detectors, even for free electron laser (FEL) power levels. We will show... first results obtained with the UCSB FEL. The detectors can resolve the 40 ns cavity dumped ...

Source: Ahlers, Guenter - Department of Physics, University of California at Santa Barbara

Collection: Physics

Summary:  -pulse FEL oscillator at the University of California at Santa Barbara (UCSB), we have developed a new... -Pulse Low-Gain Free-Electron Laser Oscillator C. S. Ng, A. Bhattacharjee (The University of Iowa... ) The Ginzburg-Landau model for the radiation field of a free-electron laser (FEL) was originally derived

Source: Ng, Chung-Sang - Department of Geology and Geophysics, University of Alaska Fairbanks

Collection: Plasma Physics and Fusion ; Physics

Summary:  -day accelerator technology, Energy Recovery Linacs (ERLs), and high-gain Free-Electron Lasers (FELs), finally... . In this paper, we discuss the principles, and the main limitations of the CEC process based on a high-gain FEL... /and cooling large amplitudes of oscillation to lower the detector's backgrounds. The presence of ...

Source: Brookhaven National Laboratory, Collider-Accelerator Department, Superconducting Accelerator and RHIC Electron Cooling Group

Collection: Physics

Summary:  power >1 kW Typical frequencies from ~100 GHz to 100 THz #12;· RF linac-based FEL · Electrostatic... " (Open) 0.2-1 kW #12;UCSB Free- Electron Lasers UCSB Free- Electron Lasers UCSB Institute for Terahertz... 1 kW pulsed LO switch · ...

Source: Ahlers, Guenter - Department of Physics, University of California at Santa Barbara

Collection: Physics

Summary:  at at The Free Electron Laser The FEL uses a relativistic electron beam that is The Cherenkov Maser The Cherenkov... The FEL uses a relativistic electron beam, that is, a beam of electrons that moves at a speed close... to the speed of light. The beam is passed through a magnetic undulator that makes the electrons oscillate

Source: Strathclyde, University of - Department Physics and Applied Physics, Biomolecular and Chemical Physics Group

Collection: Physics ; Materials Science

Summary:  FEL-BASED COHERENT ELECTRON COOLING FOR HIGH-ENERGY HADRON COLLIDERS * Vladimir N. Litvinenko, BNL... -Electron Lasers (FELs). We discuss the principles, the main limitations of this scheme and present some... of using a high gain FEL for CEC. The ______________________________________________ * Work performed under

Source: Brookhaven National Laboratory, Collider-Accelerator Department, Superconducting Accelerator and RHIC Electron Cooling Group

Collection: Physics

Summary:  Jefferson Lab 1 kW IR FEL", Proc. of LINAC 2000, pp. 716-720 [5] e.g. see A. Renieri, "Linac-Based Short... -ion colliders, while energies of 100 MeV are adequate for long ( µm) wavelength oscillator FELs and electron... W-class average power infrared Free Electron Lasers ...

Source: Cornell University, Floyd R. Newman Laboratory of Nuclear Studies (LNS)

Collection: Physics

Summary:  , we demonstrate the possibility of controlling FEL oscillators using these concepts on the example... instabilities observed of a FEL oscillator in the UV FEL of super-ACO . a and b represent the evolutions... to LINAC-based FEL oscillators. The ...

Source: Bielawski, Serge - Laboratoire de Physique des Lasers Atomes et Molécules & Centre de Recherches Lasers et Applications, Université des Sciences et Technologies de Lille

Collection: Physics

Summary:  parameters of a high gain harmonic generation (HGHG) FEL experiment to be carried out at the accelerator test... for the DUV-FEL at BNL. In the HGHG experiment we plan to double the frequency of a CO2 seed laser... , exponentially amplified radiation. 1 INTRODUCTION The seeded single pass FEL has many advantages over other ...

Source: Brookhaven National Laboratory - Accelerator Test Facility

Collection: Physics

Summary:  , Sweden Abstract This note presents a study of the feasibility of a Free Electron Laser (FEL) using... , the energy spread at 15 GeV would be too large to allow FEL saturation in an undulator of reasonable length... in the nominal case, FEL saturation is still not reached. We show that the energy spread or the transverse

Source: Keil, Eberhard - CERN

Collection: Physics

Summary:  are associated with the chaotic oscillations. The transitions of the FEL chaos3 from 1P, to 2P, then to C occur... A universal characterization of nonlinear self-oscillation and chaos in various particle... The comprehensive parameter space of self-oscillation and its period-doubling route to chaos are shown ...

Source: Lee, Hae June - School of Electrical and Computer Engineering, Pusan National University

Collection: Plasma Physics and Fusion

Summary:  the master laser oscillator. But a less recognized advan- tage of FEL's appears to be the ease of additional... by free-electron lasers (FEL's) are con- sidered from several perspectives. First, general considerations... are presented that discuss characteristics that an IR ps FEL must have to be ...

Source: Fayer, Michael D. - Department of Chemistry, Stanford University

Collection: Chemistry

Summary:  efficiency. (11) Calculations of oscillator performance of a tapered wiggler FEL excited by 10 ps electron... electron energy spectra for the Los Alamos tapered wiggler FEL amplifier experiment is given. Using

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  report new theoretical and numerical results i n the following areas of FEL physics: A) Long pulse... with the appearance of spectral features below resonance b y approximately the frequency of synchrotron oscillation... . Suppression o f the break-up has been achieved b y spectral filtering o f the FEL output at the low

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  with a seed at 160 nm. LEL3 (40-8 nm) installed on the 1 GeV loop is a MHz FEL oscillator providing higher... LEL4 planar branch 3 3 HGHG conf 1-3and 1-5 HHG seed M :U35, R :U18, 2-0.2 nm LEL3 3 1 FEL oscillator... Prototype Accelerator in Japan [2], one FEL ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  reserved. Ginzburg­Landau model for a long-pulse low-gain free-electron laser oscillator C. S. Ng and A... (FEL) was originally derived for a high-gain amplifier (S.Y. Cai and A. Bhattacharjee, Phys. Rev. A 43... (1991) 6934). With a view to making precise comparisons with experimental data from the long-pulse FEL

Source: Ng, Chung-Sang - Department of Geology and Geophysics, University of Alaska Fairbanks

Collection: Plasma Physics and Fusion ; Physics

Summary:  is especially useful in FEL oscillator de- signs, where the constant in (67) would be 1/R where R -is the round... for estimating the FEL amplifier bandwidth. In an oscillator, it helps tocalculatethe effective spontaneous... be useful, for instance, for RF linac FEL ...

Source: Jerby, Eli - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

Collection: Engineering ; Geosciences

Summary:  PROGRESS WITH FEL-BASED COHERENT ELECTRON COOLING * Vladimir N. Litvinenko# , Ilan Ben Zvi, Michael... cooling, based on high-gain FEL and ERL, was presented at last FEL conference [1]. This scheme promises... is amplified in a high-gain FEL. The main advantage of coherent electron cooling is that it promises ...

Source: Brookhaven National Laboratory, Collider-Accelerator Department, Superconducting Accelerator and RHIC Electron Cooling Group

Collection: Physics

Summary:  of the optical power in the cavity for the oscillator configuration, and the electron bunch lengthening mechanism... , and their connection with the gain-per- pass in the fel undulator, the synchrotron radiation and the quantum noise... ; the fel undulator, where stimulated photon emission is taking place. In the calculation a ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  JOURNAL DE PHYSIQUE CoZZoque C I , suppZe'ment au n02, Tome 44, fe'vrier 1983 pzge C1-125 FEL... interpr6tationdes exp6riences 5 venir. Abstract - We review the main aspects of the FEL quantum analysis... results useful for future experi- mental tests. 1. INTRODUCTION Classical Free Electron Laser (FEL) theory

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  to enhance the coherence of X-UV FELs by suppressing the input noise? ·What are the fundamental limits of FEL... developed [H. Haus, 1950]. Seeded FEL [E. Dyunin, accepted JQE, 2010] ·Electron beam coherent collective... . Introduction #12;Electron beam fragmentation DUV FEL W.S. Graves, et al., PAC 2001, ...

Source: Brookhaven National Laboratory - Accelerator Test Facility

Collection: Physics

Summary:  of a low gain FEL oscillator with a relatively large cavity desynchronism 4 and high cavity Q; these data... is the difference in length between the round-trip distance in the FEL oscillator and the spacing of the w xelectron... electron laser FEL , the same laser upon which the ...

Source: Palanker, Daniel - Hansen Experimental Physics Laboratory, Stanford University

Collection: Physics ; Biology and Medicine

Summary:  comparisons with experimental data from the long-pulse FEL oscillator at the University of California at Santa... of the GLE to a long-pulse FEL, independent of whether the FEL is con"gured as an oscillator or an ampli... We have presented a new derivation of the GLE for a long-pulse, ...

Source: Ng, Chung-Sang - Department of Geology and Geophysics, University of Alaska Fairbanks

Collection: Plasma Physics and Fusion ; Physics

Summary:  ) regime is investigated within the framework of two devices, namely the Free- Electron Laser (FEL... of the phase transition is present in the FEL and in the CARL in its conservative regime. Regarding... the dissipative CARL, a formal link is established with the HMF model. For both FEL and CARL, calculations

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  and pump-probe measurements have been conducted at the FELIX free-electron laser FEL facility in Nieu... duration and 5 Hz repetition frequency and a FEL 7 s macro- pulses, each featuring a 1 GHz train of ps... with FEL the micropulse repetition rate operat- ing at 25 MHz .17 In this experimental configuration

Source: Gregorkiewicz, Tom - Van der Waals-Zeeman Institute for Experimental Physics, Universiteit van Amsterdam

Collection: Physics ; Materials Science

Summary:  at this radiation source ELBE will be given to the production of intense FEL (Free Electron Laser) radiation in di... space will be provided. A simultaneous application of FEL infrared light and radiation in di#27;erent... an FEL. For the #28;rst application, an injector has been designed and built at Rossendorf based

Source: Magiera, Andrzej - Instytut Fizyki, Uniwersytet Jagiellonski

Collection: Physics

Summary:  -trip loss values were from 5% to 8%. The FEL oscillation was obtained not only at f0=5.6 MHz bunch... in April 2003 on a high-power free electron laser (FEL) constructed at the Siberian Center... for Photochemical Research. In this paper, we briefly describe the design of FEL driven by an accelerator

Source: Kozak, Victor R. - Budker Institute of Nuclear Physics

Collection: Fission and Nuclear Technologies ; Physics

Summary:  -undulator modelocked laser X-rayelectron beam laser amplifiers ~ 1-3 m ~10 fC 1 Å · ~1 kW electrical power · ~100 W... -accelerator laser-undulator modelocked laser X-ray ~ 1-3 m 1 Å1 Å · ~1 kW electrical power · ~100 W optical power... period that corresponds to two such structure sections. 3. ...

Source: Byer, Robert L. - E.L. Ginzton Laboratory & Department of Applied Physics, Stanford University

Collection: Engineering ; Physics

Summary:  National Laboratory (ANL), a free-electron laser (FEL) based on the self-amplified spontaneous emission... the high- brightness, low-emittance, and low-energy spread electron beam required by the SASE FEL theory... ) at Argonne National Laboratory (ANL) is currently commissioning a free-electron laser (FEL) based on the self

Source: Brookhaven National Laboratory - Accelerator Test Facility

Collection: Physics

Summary:  INTRODUCTION A Free Electron Laser (FEL) generates a tunable, coherent, high power radiation. A FEL differs... the laser effect is reached. Among different schemes, Single-Pass, high-gain FELs are particularly... of the radiation field and the N particle beam in a Single-Pass FEL can be success- fully ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  phenomenon can happen in a free electron laser (FEL): the electron can be trapped in a well of the so... radiation field. Channeling in crystal deflects the particle without changing its energy, whereas a FEL... of channeling and FEL. We think that such a presentation may help to understand the basic mechanism of the free

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  with the ``klystron model'' developed in 19 for a FEL oscillator. We do not believe this is mere coincidence... the issue of mode competition and single-mode operation of a free-electron la- ser FEL using the GLE... , and the chaotic dynamics following an instability. These connections allow us to view FEL ...

Source: Ng, Chung-Sang - Department of Geology and Geophysics, University of Alaska Fairbanks

Collection: Plasma Physics and Fusion ; Physics

Summary:  B.V. All rights reserved. Keywords: ERL; Light source; FEL; Electron cooling; Optics; Beam dynamics... : ERLs, light sources, electron coolers, and colliding beam accelerators. ERL­FELs: The only ERLs... in operation provide beams for Free Electron Lasers (FELs). A 10 kW light beam has been produced at JLAB [2

Source: Hoffstaetter, Georg - Department of Physics, Cornell University

Collection: Physics

Summary:  focusing by the inhomogeneity of the undulator field: #12;4 kx = kwK 2 , ky = 1 - kwK 2 . (18... 1 THE INTEGRAL EQUATION FOR A HIGH GAIN FEL N. A. Vinokurov * Introduction The theory of a high... gain free electron laser (FEL) is now well developed (e.g., see [1]). In this paper I derive

Source: Kemner, Ken - Biosciences Division, Argonne National Laboratory

Collection: Environmental Sciences and Ecology ; Environmental Management and Restoration Technologies

Summary:  excavations conducted by the University of Tübingen at Hohle Fels Cave in the Swabian Jura of southwestern... in Germany since 1998 when Prof. Nicholas Conard's team working at Hohle Fels discovered a single painted... at Hohle Fels in particular as well as in Central Europe as a whole may in part be a reflection

Source: Lubich, Christian - Mathematisches Institut, Universität Tübingen

Collection: Mathematics

Summary:  ) ................................................................................54 3 Linac-Based FELs... ).......................................................................................68 A.3 Free Electron Lasers (FELs... , it is safe to predict that additional future Nobel Prizes will result from the use of synchrotron or ...

Source: Kay, Mark A. - Department of Genetics, Stanford University; Wechsler, Risa H. - Kavli Institute for Particle Astrophysics and Cosmology, Stanford Linear Accelerator Center

Collection: Biology and Medicine ; Physics

Summary:  ) ................................................................................54 3 Linac-Based FELs... ).......................................................................................68 A.3 Free Electron Lasers (FELs... , it is safe to predict that additional future Nobel Prizes will result from the use of synchrotron or ...

Source: Knowles, David William - Life Sciences Division, Lawrence Berkeley National Laboratory

Collection: Biology and Medicine

Summary:  the short wavelength FEL oscillatorC101. A n external, visible o r near-UV, powerful1 laser i s sent i n... a s e r (F.E.L.) at stanfordC1]a great interest has developped worldwide f o r these kind of light... of FEL, from the millimeter t o the XUV wavelength range, tunable i n a vast spectral region and o ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  , and nonlinear dynamics in externally driven, spontaneous oscillators. He is a Fel low of the APS, Institute

Source: Shyy, Wei - Department of Aerospace Engineering, University of Michigan

Collection: Engineering

Summary:  with linac based FELs A. Tokmakoff, Alfred Kowk, R. Urhdal, D.A. Zimdars, M.D. Fayer * Department... electron laser (FEL) at Stanford has been used to study the vibrational dynamics of molecules in liquids... vibrational photon echo experiments are described and characteristics of the FEL important

Source: Fayer, Michael D. - Department of Chemistry, Stanford University

Collection: Chemistry

Summary:  (HGHG) free-electron laser (FEL) experiment is underway at the ATF. This is a collaborative effort... will be discussed. 1 INTRODUCTION A free-electron laser (FEL) experiment is being commissioned at the Brookhaven... plans will be discussed. 2 HGHG THEORY In a SASE FEL, the spontaneous emission "noise" serves to ignite

Source: Brookhaven National Laboratory - Accelerator Test Facility

Collection: Physics

Summary:  are pumped by the same master oscillator, timing jitter exists between pulses from the two lasers. 34 The FEL... , 1989 The possible applications of a free-electron laser (FEL), which would be modified to produce two... of condensed-matter molecular dynamics than the conventional one-color FEL. We review ...

Source: Fayer, Michael D. - Department of Chemistry, Stanford University

Collection: Chemistry

Summary:  ELECTRON LASER OSCILLATOR STARTUP ANALYSIS* P. Sprangle, C.M. Tang and I. Bernsteinw NavaZ Research... Laboratory, Washington, D. C. 20375, U. S .A. An analysis of t h e f r e e electron l a s e r (FEL) o s c i l... presented using the parameters of the FEL o s c i l l a t o r experiment a t Stanford University and LASL

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  WIGGLER FEL E. JERBY Faculty of Engineering, Tel-Aviv University, Ramat-Avw, 69978, Israel This paper... for an electron beam m a planar wiggler FEL. The model includes the independent contributions of the energy spread... , kinetic FEL model to improve its accuracy m cases where the angular spread, the emittance or the betatron

Source: Jerby, Eli - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

Collection: Engineering ; Geosciences

Summary:  analysis of the free electron laser (FEL) oscillator i n the l o w gain regime. The electron beam consists... of the radiation pulses i n the oscillator. *This work was supported by DARPA under Contract No. 3817. Article

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  -locked CW YAG oscillator generates a train of 1 nJ, 12 ns spaced pulses of linearly-polarized radiation... , Russian Federation, manufactured the compact picosecond terawatt CO2 laser. The CO2 laser oscillator... Laser Acceleration ·High Gain Harmonic Generation FEL ·Inverse FEL Accelerator ·Ultrafast ...

Source: Brookhaven National Laboratory - Accelerator Test Facility

Collection: Physics

Summary:  2.1 - Experimental set-up The experimental layout of the FEL infrared oscillator is shown in Fig.8... and of the optical cavity. FIG.8 - Layout of the FEL-oscillator experiment Q = quadrupole magnet; M = bending magnet... be in order. FEL oscillation in these condi- tions has been ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  %. The FEL oscillation was obtained not only at f0 = 5.6 MHz bunch repetition rate, but at f0/2, f0/3, f0... the total power loss as 2 (20+20)+0.07P* 150 W, where P* 1 kW is the intra- cavity power with scrapers... was achieved in April 2003 on a high power free electron laser (FEL) ...

Source: Kozak, Victor R. - Budker Institute of Nuclear Physics

Collection: Fission and Nuclear Technologies ; Physics

Summary:  is proposed to increase the size of the macro-particle, which is responsible for the oscillations... , Hamiltonian dynamics, chaos control Introduction A Free Electron Laser (FEL) generates a tunable, coherent... , high power radi- ation. A FEL differs from conventional lasers in using a relativistic electron beam

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  remains a relatively unexploredarea. Free-electronlasers(FELs)havebeenused in the past for mid- and far... . In the FEL, an intense, energetic electron beam is made to passthroughaperiodicmagneticfield,which causes... the electrons to oscillate, and as they do so they emit light. The electron beam and the generated light

Source: Ditmire, Todd - Department of Physics, University of Texas at Austin

Collection: Physics

Summary:  10. The power oscillates OPTICAL PULSE IN FEL re = 1.6 .4 .35 , d m . 0 0 3 . S . 1.2 1 h E R... experimentzl data available on pulse propagation i n FELs i s that ob- tained from the Stanford oscillator. I... obtenues 2 Stanford s u r ltexp&ience d'oscil- lation. Abstract - The main ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  oscillation [4]. The conditioning minimizes the spread of the forward velocity of electrons so that the FEL... ...............................................................................................................................4 1.1. Improved Design of High-Gain FELs for X... ...

Source: Kemner, Ken - Biosciences Division, Argonne National Laboratory

Collection: Environmental Sciences and Ecology ; Environmental Management and Restoration Technologies

Summary:  ................................................................................................... 26 3.B.3 Overall Specifications of FEL... ........................................................................ 26 3.B.4 Selected Details of the BigLight FEL... -electron laser (FEL) technology was required because it offers ...

Source: Weston, Ken - Department of Chemistry and Biochemistry, Florida State University

Collection: Chemistry

Summary:  . A FEL oscillator is a pulsed laser source whose amplify- ing media is a relativistic electron beam... . First, as usual in FEL oscillators [29], we observe in a small region near zero detuning a regime... parameter is increased. We start with the numerical and experimental study of a free-electron laser ...

Source: Bielawski, Serge - Laboratoire de Physique des Lasers Atomes et Molécules & Centre de Recherches Lasers et Applications, Université des Sciences et Technologies de Lille

Collection: Physics

Summary:  . The effective lifetime shows strong oscillations ('an order of magnitude) with frequency. Minima are shifted... mobility semiconducting InAs/Al Ga Sb (15 nm InAs well) single quantum well. We have observed oscil... ex- periments were carried out with the UCSB FEL in conjunction with a 12 T superconducting mag- net

Source: Kono, Junichiro - Department of Electrical and Computer Engineering, Rice University

Collection: Engineering ; Physics

Summary:  site of heme proteins. The studies were performed using a free-electronlaser (FEL) and an experimental... set up at the Stanford University FEL Center. These novel tech- niques are discussed in some detail... with optical parametric amplifiers (OPA),and free-electron lasers (FEL).The work described here was performed

Source: Fayer, Michael D. - Department of Chemistry, Stanford University

Collection: Chemistry

Summary:  Calculation of Wakefields for Short Bunches, Cho-Kuen Ng, SLAC Optics-free X-ray FEL Oscillator, Dmitry Kayran... : John Erickson 10:00 10:15 10:30 Inverse-FEL Accelerator for Driving Compact Light Sources, Aaron... :45 Comparison of Accelerator Technologies for use in ADSS, Bill Weng, BNL PoP Experiment for ...

Source: Ohta, Shigemi - Theory Group, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK)

Collection: Physics

Summary:  electron laser (FEL) emission at 3.4 pm. [5] We have designed a FEL with expected wavelength tuneable... of a prototype helical undulator designed for this far infrared FEL. As applications for undulator radiation... [Ill and a factor of about three greater FEL gain than planar magnet arrays [12]. Design ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  enhancement of shear oscillations in a peri- odically driven fluid confined within a capillary. The measured... into account by adding the Maxwell elastic stress as a body force Fel(r,t), Fel r,t t dt e (t t )/ 2 v r,t , 4... in the lattice Boltzmann equations Eq. 1 fi r Ci ,t 1 fi r,t fi r,t fi eq r,t 1 3 ...

Source: Grant, Martin - Physics Department, McGill University

Collection: Physics

Summary:  factors are present in the crystal, it is observed that the fre- quency of the instability oscillation... is locked to the difference frequency f - fel where f is the exciting rf frequency and fel the frequency... coupling the transition to chaos is hindered and the spectrum shows signals at frequencies f and ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  for the Jefferson Lab IR Demonstration FEL Project Team, "The Jefferson Lab 1 kW IR FEL", these proceedings. [2] C... DRIVER ACCELERATOR DESIGN FOR THE 10 KW UPGRADE OF THE JEFFERSON LAB IR FEL D. Douglas, S. V... , Newport News, VA23606, USA Abstract An upgrade of the Jefferson Lab IR ...

Source: Thomas Jefferson National Accelerator Facility

Collection: Physics

Summary:  FEL3330 Networked and Multi-Agent Control Systems Lecture 11: Distributed Estimation Distributed... Estimation Distributed Localization FEL3330, Lecture 11 1 June 8, 2011 #12;Distributed Estimation... is from the fact that P-1^x = HR-1 V y. FEL3330, Lecture 11 2 June 8, 2011 #12;Distributed Estimation Each

Source: 

Collection: Computer Technologies and Information Sciences

Summary:  to bring the FEL into oscillation. Fine tuning of the electron beam energy will be accomplished while... , beam energy, and wiggler field strength. After opti- mization of the oscillation, the FEL... laser experiment at Stanford are presented. INTRODUCTION Free Electron Lasers (FEL) have ...

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  of generating coherent and tunable radiation sources, such as free-electron lasers (FELs). In this case... . Among different schemes, single-pass, high-gain FELs are currently attracting growing interests [1... this saturation process is impor- tant to estimate, and then optimize, the performance and building costs of a FEL

Source: Dauxois, Thierry - Laboratoire de Physique, Ecole Normale Supérieure de Lyon

Collection: Physics

Summary:  Electron laser. ©2011 Optical Society of America OCIS codes: (140.2600) Free-electron lasers; (FELs); (140... FELs," Opt. Commun. 239(1­3), 161­172 (2004). 19. E. L. Saldin, E. A. Schneidmiller, and M. V. Yurkov... . T. Scharlemann, "Generation of XUV light by resonant frequency tripling in a two-wiggler FEL

Source: Kim, Jae-Hoon - Department of Physics, Pohang University of Science and Technology

Collection: Physics

Summary:  FEL3330 Networked and Multi-Agent Control Systems Lecture 6: Formation Control 2 Distance based... formations Rigidity Persistence FEL3330, Lecture 6 1 May 4, 2011 #12;Graphs and Formations 1 2 3 4 {p1, p2, p... with an edge: Neighbour Nodes pi(t) = vi(t) FEL3330, Lecture 6 2 May 4, 2011 #12;Rigidity FEL3330, ...

Source: 

Collection: Computer Technologies and Information Sciences

Summary:  of existing accounts of causality, a fuzzy logic based formalism FEL is proposed that takes into account... of existing accounts. Analyses concerning how FEL handles various aspects of commonsense causal reasoning... are performed, in an abstract way. FEL can be implemented (naturally) in a neural (connectionist) network

Source: Sun, Ron - Cognitive Science Department, Rensselaer Polytechnic Institute

Collection: Computer Technologies and Information Sciences

Summary:  Gleichstrom 10AI = fließe. Für den Eisenkern gelte 2 2cmFeA = , 4000rµ = . (Der mittlere Eisenweg Fel und die... Feldstärke im Eisen und in der Luft und die Flussdichte I N 20cmFel = 1) I N 20cmFel = 2) 1mmd = 3) I N 1 2... 15cmFe Fel l= = 3 5cmFel = #12;Fachgebiet ...

Source: Paderborn, Universität - Fakultät für Elektrotechnik, Informatik und Mathematik, Fachgebiet Leistungselektronik und Elektrische Antriebstechnik

Collection: Engineering

Summary:  level exceeding the requirement of stable operation of the LEUTL FEL system. One remarkable number... years, the APSPDL has been a workhorse for the operation of the LEUTL FEL system, leading... to the demonstration of optical SASE FEL [2], demonstration of saturation operation of a SASE FEL [3], thorough

Source: Kemner, Ken - Biosciences Division, Argonne National Laboratory

Collection: Environmental Sciences and Ecology ; Environmental Management and Restoration Technologies

Summary:  VISITOR SAFETY TRAINING CHECKLIST: Free Electron Laser (FEL) Laboratory Under California law... and campus policy, the University must provide documented safety training for workers. For FEL visitors... , this generally means covering the basic guidelines/tasks below. The FEL management loosely defines a "visitor

Source: Ahlers, Guenter - Department of Physics, University of California at Santa Barbara

Collection: Physics

Summary:  (a , b ; 2k , 2k ) 4k + log Zel(a , b ; 2k , 2k ) 4k and eqn (5.7) should read fel 1 2 [a + a ], 1 2 [b... + b ] 1 4 [fel(a , b )+fel(a , b )+fel(a , b )+fel(a , b )] in which a must be parallel to a and b

Source: Penrose, Oliver - Department of Mathematics, Heriot-Watt University

Collection: Mathematics

Summary:  of a rapidly tunable FEL. Calculations have been done [1] based on a 1D analysis, mainly to define the required... . The G3DH computer code is based on a generalized, linear, three-dimensional model of the FEL amplifier... ;R W.B. Best et al. / Comparative study ofparticle simulation and linear model analysis where the FEL

Source: Jerby, Eli - Department of Electrical Engineering-Physical Electronics, Tel Aviv University

Collection: Engineering ; Geosciences

Summary:  and T is the temperature. The total elastic free energy at time t is Fel = 1 2 d3 Fel = 1 2 d3 d3 cP0(, ) ×(-kT ln... [P(x(,t),x( ,t))]) = d3 d3 H(, ) × 3 2Lb (x( ,t) - x(,t))T L-1 (x( ,t) -x(,t)) + 1 2 ln det L , (1) whereFel... ), one needs to calculate the derivatives of Fel, Fnem, and Fvol with ...

Source: Shelley, Michael - Department of Mathematics, Courant Institute of Mathematical Sciences, New York University

Collection: Mathematics

Summary:  -electron laser (FEL) at DESY has recently opened the door to a new regime of strong field matter interaction... a detailed study of cluster ionization induced by intense VUV-FEL light making use of photoelectron... maximum N of the size distribution is approximately hNi. FEL radiation (h 13 eV) with a pulse duration

Source: Rusek, Marian - Institute of Physics, Polish Academy of Sciences

Collection: Physics

Summary:  s when AC currents were detected in membranes subjected to mechanical oscil- lations direct effect 8... have measured oscillations of bilayer patches subjected to AC voltages 9 and atomic force microscope... contributions, F = Fel + Fm. 1 The exact forms of these free-energy functionals are not known. A number

Source: Sun, Sean - Department of Mechanical Engineering, Johns Hopkins University

Collection: Engineering ; Biotechnology

Summary:  . Schematic of the timing structure through the 4GLS linac. 590 MeV Linac 600 MeV Dump (1 kW) XUV FEL Spent... and of energy recovery from a beam disrupted by an FEL interaction as supplied by an infrared oscillator system... and bending magnets) and high peak current free-electron lasers ...

Source: Hoffstaetter, Georg - Department of Physics, Cornell University

Collection: Physics

Summary:  forces arising from the application of an oscillating bias [13] may need to be taken into consideration... -KPFM) [13]. We have investigated the influence of the bias oscillation amplitude and frequency over a range... . Background The electrostatic force, Fel, between the tip and the sample can be shown to have a parabolic

Source: Grütter, Peter - Physics Department, McGill University

Collection: Physics

Summary:  properties of rare-earth alloys Tb0~2~Dyo~~3(Fel~xMnx)l V.PREOBRAZHENSKY, 1.DUBENKO, N. ECONOMOV and A... of rare-earth compounds Tb0~27Dyo~73(Fel~~)lm g (OFel-g) are of interest

Source: Ecole Polytechnique, Centre de mathématiques

Collection: Mathematics

Summary:  Greenfield FELs John Galayda, SLAC Kwang-Je Kim, ANL (Presenter) James Murphy, BNL BESAC... Subcommittee on BES 20-year Facility Road Map February 22-24, 2003 #12;What is a Greenfield FEL? · High... -gain FELs are proving themselves as research tools in the U.S. and Europe · Proposals for new facilities

Source: Experimental High Energy Physics

Collection: Plasma Physics and Fusion ; Physics

Summary:  types of single-pass high-gain FELs, SASE at 193 nm, 4th harmonic HGHG at 199 nm and ESASE at the Source... and ESASE FELs was observed. We also observed the spectral broadening and instability of the 4th harmonic... -pass high-gain FELs at the NSLS SDL, SASE at the 193 nm, the first lasing of the 4th harmonic HGHG and ESASE

Source: Brookhaven National Laboratory, Environmental Chemistry Division, Department of Applied Science

Collection: Environmental Sciences and Ecology

Summary:  ++ Abstract. Following Asatryan and Fel' dman (1965), two experiments were conducted to describe the so... underdamped motions relative to normals (as shown by differences in the degree of oscillation about the final... ). For example, Asatryan and Fel'dman (1965), in a now classic experiment had subjects establish steady

Source: Yale University, Haskins Laboratories

Collection: Multidisciplinary Databases and Resources ; Biology and Medicine

Summary:  Universität Tü- bingen haben in der Höhle Hohle Fels auf der Schwäbischen Alb in den letzten beiden Jahren... Entdeckungen bemalter Steine seit 1998, als ebenfalls im Hohle Fels vom Archäologenteam des Tübinger Urge... . Die neuen Funde aus dem Hohle Fels stehen im Mittelpunkt einer Son- derausstellung im Museum der

Source: Schreiber, Frank - Bereich für Physik der Molekularen und Biologischen Materie, Universität Tübingen

Collection: Materials Science ; Chemistry

Summary:  Nuclear Instruments and Methods m Physics Research A304 (1991) 797 North-Holland Section XII. FEL... applications Picosecond FEL experiments on condensed matter systems Michael D. Fayer Department of Chemistry... electron laser (FEL) are discussed. A specific example, photon echo experiments on a near-infrared dye

Source: Fayer, Michael D. - Department of Chemistry, Stanford University

Collection: Chemistry

Summary:  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 The X-Ray FEL in Hamburg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4... alternative way of creating monochromatic light is presented - free-electron laser (FEL). Like the synchrotron... the required spectrum range, but on FEL we ...

Source: Prosen, Tomaž - Department of Physics, University of Ljubljana

Collection: Physics