Laser System for Livermore's Mono Energetic Gamma-Ray Source

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A Mono-energetic Gamma-ray (MEGa-ray) source, based on Compton scattering of a high-intensity laser beam off a highly relativistic electron beam, requires highly specialized laser systems. To minimize the bandwidth of the {gamma}-ray beam, the scattering laser must have minimal bandwidth, but also match the electron beam depth of focus in length. This requires a {approx}1 J, 10 ps, fourier-transform-limited laser system. Also required is a high-brightness electron beam, best provided by a photoinjector. This electron source requires a second laser system with stringent requirements on the beam including flat transverse and longitudinal profiles and fast rise times. Furthermore, these systems ... continued below

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Gibson, D; Albert, F; Bayramian, A; Marsh, R; Messerly, M; Ebbers, C et al. March 14, 2011.

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A Mono-energetic Gamma-ray (MEGa-ray) source, based on Compton scattering of a high-intensity laser beam off a highly relativistic electron beam, requires highly specialized laser systems. To minimize the bandwidth of the {gamma}-ray beam, the scattering laser must have minimal bandwidth, but also match the electron beam depth of focus in length. This requires a {approx}1 J, 10 ps, fourier-transform-limited laser system. Also required is a high-brightness electron beam, best provided by a photoinjector. This electron source requires a second laser system with stringent requirements on the beam including flat transverse and longitudinal profiles and fast rise times. Furthermore, these systems must be synchronized to each other with ps-scale accuracy. Using a novel hyper-dispersion compressor configuration and advanced fiber amplifiers and diode-pumped Nd:YAG amplifiers, we have designed laser systems that meet these challenges for the X-band photoinjector and Compton-scattering source being built at Lawrence Livermore National Laboratory.

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PDF-file: 5 pages; size: 0.4 Mbytes

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  • Presented at: PAC 2011, New York , NY, United States, Mar 27 - Apr 03, 2011

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  • Report No.: LLNL-CONF-473878
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1021545
  • Archival Resource Key: ark:/67531/metadc843417

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Office of Scientific & Technical Information Technical Reports

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  • March 14, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 8, 2016, 8:28 p.m.

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Gibson, D; Albert, F; Bayramian, A; Marsh, R; Messerly, M; Ebbers, C et al. Laser System for Livermore's Mono Energetic Gamma-Ray Source, article, March 14, 2011; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc843417/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.