Low energy spread 100 MeV-1 GeV electron bunches from laserwakefiel d acceleration at LOASIS

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Experiments at the LOASIS laboratory of LBNL recentlydemonstrated production of 100 MeV electron beams with low energy spreadand low divergence from laser wakefield acceleration. The radiationpressure of a 10 TW laser pulse guided over 10 diffraction ranges by aplasma density channel was used to drive an intense plasma wave(wakefield), producing acceleration gradients on the order of 100 GV/m ina mm-scale channel. Beam energy has now been increased from 100 to 1000MeV by using a cm-scale guiding channel at lower density, driven by a 40TW laser, demonstrating the anticipated scaling to higher beam energies.Particle simulations indicate that the low energy spread ... continued below

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Geddes, C.G.R.; Esarey, E.; Michel, P.; Nagler, B.; Nakamura, K.; Plateau, G.R. et al. August 1, 2006.

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Experiments at the LOASIS laboratory of LBNL recentlydemonstrated production of 100 MeV electron beams with low energy spreadand low divergence from laser wakefield acceleration. The radiationpressure of a 10 TW laser pulse guided over 10 diffraction ranges by aplasma density channel was used to drive an intense plasma wave(wakefield), producing acceleration gradients on the order of 100 GV/m ina mm-scale channel. Beam energy has now been increased from 100 to 1000MeV by using a cm-scale guiding channel at lower density, driven by a 40TW laser, demonstrating the anticipated scaling to higher beam energies.Particle simulations indicate that the low energy spread beams wereproduced from self trapped electrons through the interplay of trapping,loading, and dephasing. Other experiments and simulations are alsounderway to control injection of particles into the wake, and henceimprove beam quality and stability further.

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  • 2006 Linear Accelerator Conference, Knoxville,TN, August 21-25, 2006

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  • Report No.: LBNL--63722
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 929058
  • Archival Resource Key: ark:/67531/metadc899705

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  • August 1, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Oct. 31, 2016, 4:12 p.m.

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Geddes, C.G.R.; Esarey, E.; Michel, P.; Nagler, B.; Nakamura, K.; Plateau, G.R. et al. Low energy spread 100 MeV-1 GeV electron bunches from laserwakefiel d acceleration at LOASIS, article, August 1, 2006; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc899705/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.