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Los Alamos Free Electron Laser Oscillator Experiment
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Book Synopsis Recent Results of the Los Alamos Free-electron Laser Oscillator Experiment by :
Download or read book Recent Results of the Los Alamos Free-electron Laser Oscillator Experiment written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the last Lasers '83 Conference, significant progress has been made on the Los Alamos free-electron laser (FEL). Although the previously reported results were in agreement with theory, the data were plagued by gain fluctuations, and no spectral measurements had been obtained. Since then, the source of the fluctuations has been analyzed and substantially reduced. Also, the optical power and spectra dependence on beam emittance, alignment, cavity length, energy spread, and current were systematically studied. This paper reports on the results obtained with a uniform-period wiggler. 3 refs., 14 figs., 2 tabs.
Book Synopsis Los Alamos Free-electron-laser Oscillator Experiment by :
Download or read book Los Alamos Free-electron-laser Oscillator Experiment written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Plans have been made to modify the Los Alamos free-electron-laser amplifier experiment to allow its use as an oscillator at 10.6 microns. Several major changes were required, all of which have now been completed. The necessity for these changes is discussed as are the details of their fulfillment. In some cases we have progressed to the point where we can report on the performance of the new systems. The present status is described.
Book Synopsis Electron Beam Diagnostic for the Los Alamos Free-electron Laser Oscillator Experiment by :
Download or read book Electron Beam Diagnostic for the Los Alamos Free-electron Laser Oscillator Experiment written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An electron beam diagnostic for the Los Alamos free-electron laser (FEL) oscillator experiment has been used to measure the time dependence of the electron energy distribution in a 100-.mu.s time interval. The electron beam consists of macropulses that have a duration of 100 .mu.s and a repetition rate of 1 Hz. Each macropulse consists of a series of micropulses that have approx. 30 ps duration, approx. 50 A peak current, and approx. 50 ns separation. The primary purpose of the electron beam diagnostic is measurement of the time dependence of the electron energy distribution during the build-up of the photon field in the oscillator. Since the exact time of build-up depends on various rf and cavity considerations, provisions were made to allow the observation window to be varied from 10 to 100 .mu.s and to be delayed by times up to 100 .mu.s. 5 references, 9 figures.
Book Synopsis Subharmonic Buncher for the Los Alamos Free-electron Laser Oscillator Experiment by :
Download or read book Subharmonic Buncher for the Los Alamos Free-electron Laser Oscillator Experiment written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A high efficiency free-electron laser oscillator experiment is being constructed at Los Alamos National Laboratory. A buncher system has been designed to deliver 30-ps, 5-nC electron bunches to a 20-MeV standing-wave linac at the 60th subharmonic of the 1300-MHz accelerator frequency. The first 108.3-MHz buncher cavity accepts a 5-ns, 5-A peak current pulse from a triode gun. Following a 120-cm drift space, a second 108.3-MHz cavity is used, primarily to enhance the bunching of the trailing half of the bunch. A 1300-MHz cavity with 20-cm drift spaces at the each end completes the beamline components. The bunching process continues into the linac's first three accelerating cells. Two thin iron-shielded lenses and several large-diameter solenoids provide axial magnetic fields for radial focusing.
Book Synopsis First Operation of the Los Alamos Free Electron Laser Oscillator by : Los Alamos National Laboratory
Download or read book First Operation of the Los Alamos Free Electron Laser Oscillator written by Los Alamos National Laboratory and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron-beam Diagnostics for the Los Alamos Free-electron Oscillator Experiment by :
Download or read book Electron-beam Diagnostics for the Los Alamos Free-electron Oscillator Experiment written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron-beam diagnostics for the Los Alamos free-electron-laser oscillator experiment have been designed to measure the time dependence of the electron energy distribution with time intervals ranging from 30 ps to 200 .mu.s. The electron beam consists of macropulses that have a 100-.mu.s duration and a 1-Hz repetition rate. Each macropulse consists of a series of micropulses that have approx. 30 ps duration, approx. 50 A peak current, and approx. 50 ns separation. The primary purposes of the electron-beam diagnostics is twofold: (1) optimization of the bunching system to provide a maximum peak current in the micropulses; and (2) measurement of the time dependence of the electron energy distribution during build-up of the photon field in the oscillator. Because the exact time of build-up is uncertain, provisions have been made to allow the observation window to be varied from 10 to 100 .mu.s and to be delayed by times up to 100 .mu.s.
Book Synopsis Comparison of the Results of Theoretical Calculations with Experimental Measurements from the Los Alamos Free-electron Laser Oscillator Experiment by :
Download or read book Comparison of the Results of Theoretical Calculations with Experimental Measurements from the Los Alamos Free-electron Laser Oscillator Experiment written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison between some of the measurements made with a uniform wiggler during the Los Alamos free-electron laser oscillator experiment and the results of one-dimensional pulse propagation calculations using the mathematical model of Colson and Ride will be presented. Small-signal gain data will be discussed. Calculated output power vs. optical resonator length will be compared with data. Time-integrated optical spectral data, which show clear evidence for Raman sidebands, will be compared with calculated spectra as a function of resonator length. The calculated electron energy distribution function, using the measured electron-beam micropulse shape, and the associated extraction efficiency will be compared with measurements.
Book Synopsis Status of the Los Alamos Free-Electron Laser by :
Download or read book Status of the Los Alamos Free-Electron Laser written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the initial oscillator experiments were completed last year, the Los Alamos FEL has undergone some major modifications and additions in preparation for the next set of experiments. The laser performance is projected to be substantially enhanced, the rf energy-recovery technique will be demonstrated, and FEL physics measurements will be expanded. The accelerator is now being tuned with very promising performance. The above experiments will be completed during the next year.
Book Synopsis Principles of Free-electron Lasers by : H.P. Freund
Download or read book Principles of Free-electron Lasers written by H.P. Freund and published by Springer Science & Business Media. This book was released on 1996-08-31 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the definitive tutorial text and reference work on free electron lasers. Since the publication of the first edition in 1992 there has been a significant increase both in the number of free-electron lasers in use worldwide, and in the understanding of the various regimes for these devices. In order to maintain the position of this book as the most comprehensive and thorough reference and tutorial in the field, the authors have completely updated the book. In addition to updates and corrections to chapters in the first edition, new chapters have been added.
Book Synopsis Principles of Free Electron Lasers by : Henry P. Freund
Download or read book Principles of Free Electron Lasers written by Henry P. Freund and published by Springer Nature. This book was released on 2023-09-19 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis First Operation of the Los Alamos Free Electron Laser Oscillator by : Los Alamos National Laboratory
Download or read book First Operation of the Los Alamos Free Electron Laser Oscillator written by Los Alamos National Laboratory and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Los Alamos Free Electron Laser written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Los Alamos free electron (FEL) laser oscillator has successfully operated over a wavelength range from 9 to 11 .mu.m with a peak output power of 5 MW and an average output power of 6 kW over a 70-.mu.s pulse length. The FEL is driven by a conventional rf linear accelerator operating at 1.3 GHz with a nominal energy of 20 MeV. Particularly important parts of the beamline are the electron gun, the subharmonic and fundamental-bunching systems, the accelerator, the feedback controllers, the steering and focusing systems, the Cherenkov radiators used as beam-position monitors, and the slow and fast deflectors used with the diagnostic spectrometer at the exit of the beamline. We will discuss problems and present the performance of these components. 10 references, 12 figures, 2 tables.
Download or read book Los Alamos Free-electron Laser written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past year the Los Alamos free-electron laser (FEL) oscillator has demonstrated high peak and average power (10 MW and 6 kW), broad-wavelength tunability (9 to 35 .mu.m), and near-ideal optical quality (0.9 Strehl ratio). An electron energy-extraction efficiency of 1% was measured. The predicted production of synchrotron sidebands also was observed in the broadened optical spectrum. As shorter wavelengths and higher powers are pursued, higher currents with improved beam quality will be required. Advanced injectors and energy-recovery systems are being developed to meet these demands. 17 refs., 6 figs., 3 tabs.
Book Synopsis High-efficiency Free-electron Laser Results by :
Download or read book High-efficiency Free-electron Laser Results written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Results obtained with a tapered-wiggler free-electron laser demonstrate the concepts proposed by Morton for enhanced efficiency and show deceleration of electrons by as much as 7%, and extraction of more than 3% of the total electron-beam energy as laser energy when the laser is operated as an amplifier. The experiment is presently being reconfigured to examine its performance as a laser oscillator.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Free Electron Lasers - Proceedings Of The Beijing Fel Seminar by : Jiaer Chen
Download or read book Free Electron Lasers - Proceedings Of The Beijing Fel Seminar written by Jiaer Chen and published by World Scientific. This book was released on 1989-03-01 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: At this International Seminar, the six invited speakers presented several lectures each on current FEL research. The volume contains papers on the theory and experimental research done on the oscillator, including the Los Alamos, Stanford/TRW program and recent important achievements on Induction FEL at Lawrence Livermore.
