Threshold for Trapping Positrons in the Wake Driven by a Ultra-relativistic Electron Bunch

Journal Article · Thu Jan 22 00:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3080973· OSTI ID:21255284

Wang, X; Muggli, P; Katsouleas, T ^[1]; Ischebeck, R; Hogan, M J ^[2]; Joshi, C; Mori, W B ^[3]

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1. University of Southern California, Los Angeles, CA 90089 (United States)
2. Stanford Linear Accelerator Center, Stanford, CA 94025 (United States)
3. University of California at Los Angeles, Los Angeles, CA 90095 (United States)

We have recently proposed a new concept for generating, injecting and accelerating positrons in a plasma using a double-pulse electron bunch. Monte Carlo simulations show that the number of the positrons produced in a foil target has an exponentially decay energy spectrum. The energy threshold for the trapping of these positrons in a ultra-relativistic electron wake is investigated numerically. For a typical 28.5 GeV electron drive bunch, the trapping threshold for the positrons is a few MeV, and therefore a majority of positrons generated in the foil target are focused and accelerated by the plasma wake.

• OSTI ID: 21255284
• Journal Information: AIP Conference Proceedings, Vol. 1086, Issue 1; Conference: 13. advanced accelerator concepts workshop, Santa Cruz, CA (United States), 27 Jul - 2 Aug 2008; Other Information: DOI: 10.1063/1.3080973; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM BUNCHING
COMPUTERIZED SIMULATION
ELECTRON BEAMS
ELECTRONS
ENERGY SPECTRA
GEV RANGE 10-100
MONTE CARLO METHOD
POSITRON BEAMS
POSITRONS
RELATIVISTIC RANGE
TRAPPING
WAKEFIELD ACCELERATORS