Laser-driven high-quality positron sources as possible injectors for plasma-based accelerators

    Research output: Contribution to journalArticle


    View graph of relations

    The intrinsic constraints in the amplitude of the accelerating fields sustainable by radio-frequency accelerators demand for the pursuit of alternative and more compact acceleration schemes. Among these, plasma-based accelerators are arguably the most promising, thanks to the high-accelerating fields they can sustain, greatly exceeding the GeV/m. While plasma-based acceleration of electrons is now sufficiently mature for systematic studies in this direction, positron acceleration is still at its infancy, with limited projects currently undergoing to provide a viable test facility for further experiments. In this article, we study the feasibility of using a recently demonstrated laser-driven configuration as a relatively compact and inexpensive source of high-quality ultra-relativistic positrons for laser-driven and particle-driven plasma wakefield acceleration studies. Monte-Carlo simulations show that near-term high-intensity laser facilities can produce positron beams with high-current, femtosecond-scale duration, and sufficiently low normalised emittance at energies in the GeV range to be injected in further acceleration stages



    Original languageEnglish
    Article number5279
    Number of pages10
    JournalScientific Reports
    Journal publication date27 Mar 2019
    Publication statusPublished - 27 Mar 2019

      Research areas

    • positron, laser, wakefield, plasma

    ID: 166281256