Download or read book Final Report on the Joule Scale Experimental Demonstration written by and published by . This book was released on 2008 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe the final results of the High Power Laser Pulse Recirculation project. We have developed and implementing a novel technique for picosecond, Joule-class laser pulse recirculation inside a passive cavity. The aim of this project was to develop technology compatible with increasing the efficiency of Compton based light sources by more than an order of magnitude. In year 1 of the project, we achieved a greater than 40 times average power enhancement of the mJ-scale laser pulses inside a passive cavity with internal focus. In year 2, we demonstrated recirculation of lasers pulses with energies up to 191 mJ at 532 nm, at a repetition rate of 10 Hz, and a pulse duration of 20 ps. In this high energy regime, we achieved up to 14 times average power enhancement inside the cavity. This enhancement factor is compatible with the new X-band based mono-energetic gamma-ray machine, Velociraptor, being constructed at LLNL. The demonstrated cavity enhancement is primarily limited by the poor spatial beam quality of the high power laser beam. We expect a nearly diffraction limited laser beam to achieve 40 times or better cavity enhancement, as demonstrated in low energy experiments in FY-07. The two primary obstacles to higher average brightness and conversion efficiency of laser pulse energy to gamma-rays are the relatively small Compton scattering cross-section and the typically low repetition rates of Joule-class interaction lasers (10 Hz). Only a small fraction (10−1°) of the available laser photons is converted to gamma-rays, while the rest is discarded. To significantly reduce the average power requirements of the laser and increase the overall system efficiency, we can recirculate laser light for repeated interactions with electron bunches. Our pulse recirculation scheme is based on nonlinear frequency conversion, termed recirculation injection by nonlinear gating (RING), inside a passive cavity. The main objectives of the two year project were: (1) Validate the concept of RING pulse trapping and recirculation technique. Completed Sep. 07 (2) Develop cavity designs compatible with a laser-electron Compton light source. Completed January 08. (3) Demonstrate trapping and recirculation of laser pulses suitable for high brightness gamma-ray generation. Completed Aug. 08 Our project has established RING as a viable technology for enhancing Compton scattering based gamma-ray generation. With sufficient funding we can implement pulse recirculation on the next generation Mono-energetic Gamma-Ray machine under construction at LLNL.

Download or read book Report of the Annual Meeting written by British Association for the Advancement of Science. Meeting and published by . This book was released on 1909 with total page 1244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fossil Energy Update written by and published by . This book was released on 1982 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AEC December 1 1973 Report on Energy Research and Development written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1974 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of the Cornell Workshops on the Major Issues of a National Energy Research and Development Program Sept 14 Oct 17 1973 written by and published by . This book was released on 1973 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings and Reports on Atomic Energy written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1974 with total page 1142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photonics Volume 2 written by David L. Andrews and published by John Wiley & Sons. This book was released on 2015-01-28 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the basic physical principles underlying thescience and technology of nanophotonics, its materials andstructures This volume presents nanophotonic structures and Materials.Nanophotonics is photonic science and technology that utilizeslight/matter interactions on the nanoscale where researchers arediscovering new phenomena and developing techniques that go wellbeyond what is possible with conventional photonics andelectronics.The topics discussed in this volume are: CavityPhotonics; Cold Atoms and Bose-Einstein Condensates; Displays;E-paper; Graphene; Integrated Photonics; Liquid Crystals;Metamaterials; Micro-and Nanostructure Fabrication; Nanomaterials;Nanotubes; Plasmonics; Quantum Dots; Spintronics; Thin FilmOptics Comprehensive and accessible coverage of the whole of modernphotonics Emphasizes processes and applications that specifically exploitphoton attributes of light Deals with the rapidly advancing area of modern optics Chapters are written by top scientists in their field Written for the graduate level student in physical sciences;Industrial and academic researchers in photonics, graduate studentsin the area; College lecturers, educators, policymakers,consultants, Scientific and technical libraries, governmentlaboratories, NIH.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Environmental Technology Initiative written by United States. Environmental Protection Agency and published by . This book was released on 1997 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hearings Reports and Prints of the Joint Committee on Atomic Energy written by United States. Congress. Joint Committee on Atomic Energy and published by . This book was released on 1974 with total page 1660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1988 with total page 1428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Mechanical Equivalent of Heat written by James Prescott Joule and published by . This book was released on 1850 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surface Science Reports written by and published by . This book was released on 2002 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Handbook of Biomass Combustion and Co firing written by Jaap Koppejan and published by Taylor & Francis. This book was released on 2012-05-16 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique handbook presents both the theory and application of biomass combustion and co-firing, from basic principles to industrial combustion and environmental impact, in a clear and comprehensive manner. It offers a solid grounding on biomass combustion, and advice on improving combustion systems. Written by leading international academics and industrial experts, and prepared under the auspices of the IEA Bioenergy Implementing Agreement, the handbook is an essential resource for anyone interested in biomass combustion and co-firing technologies varying from domestic woodstoves to utility-scale power generation. The book covers subjects including biomass fuel pre-treatment and logistics, modelling the combustion process and ash-related issues, as well as featuring an overview of the current R&D needs regarding biomass combustion.

Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1983 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt: