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| THPPA01 |
Demonstration of the Hollow Channel Plasma Wakefield Accelerator |
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| SUPSS117 |
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- S.J. Gessner, J.M. Allen, C.I. Clarke, J.-P. Delahaye, J.T. Frederico, S.Z. Green, C. Hast, M.J. Hogan, N. Lipkowitz, M.D. Litos, B.D. O'Shea, D.R. Walz, V. Yakimenko, G. Yocky
SLAC, Menlo Park, California, USA
- E. Adli, C.A. Lindstrøm
University of Oslo, Oslo, Norway
- W. An, C.E. Clayton, C. Joshi, K.A. Marsh, W.B. Mori, N. Vafaei-Najafabadi
UCLA, Los Angeles, California, USA
- S. Corde, A. Doche
LOA, Palaiseau, France
- W. Lu
TUB, Beijing, People's Republic of China
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Funding: Work supported by DOE contract DE-AC02-76SF00515.
Over the past decade, there has been enormous progress in the field of beam and laser-driven plasma acceleration of electron beams. However, in order for plasma wakefield acceleration to be useful for a high-energy e+e- collider, we need a technique for accelerating positrons in plasma as well. This is a unique challenge, because the plasma responds differently to electron and positron beams, with plasma electrons being pulled through the positron beam and creating a non-linear focusing force. Here, we demonstrate a technique called hollow channel acceleration that symmetrizes the wakefield response to beams of either charge. Using a transversely shaped laser pulse, we create an annular plasma with a fixed radius of 200 μm. We observe the acceleration of a positron bunch with energies up to 33.4 MeV in a 25 cm long channel, indicating an effective gradient greater than 100 MeV/m. This is the first demonstration of a technique that way be used for staged acceleration of positron beams in plasma.
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Slides THPPA01 [5.647 MB]
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| DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IPAC2016-THPPA01
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THPPA02 |
ACFA/IPAC'16 Hogil Kim Prize Presentation |
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- S. Posen
Fermilab, Batavia, Illinois, USA
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Presentation by the winner of the ACFA/IPAC'16 Hogil Kim Prize.
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Slides THPPA02 [5.021 MB]
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THPPA03 |
ACFA/IPAC'16 Nishikawa Tetsuji Prize Presentation |
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- G.-H. Luo
NSRRC, Hsinchu, Taiwan
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Presentation by the winner of the 2016 ACFA/IPAC'16 Nishikawa Tetsuji Prize.
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Slides THPPA03 [21.940 MB]
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THPPA04 |
ACFA/IPAC'16 Xie Jialin Prize Presentation |
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- D.I. Lowenstein
BNL, Upton, Long Island, New York, USA
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Presentation by the winner of the ACFA/IPAC'16 Xie Jialin Prize.
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Slides THPPA04 [24.424 MB]
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