Spectral and spatial characterisation of laser-driven positron beams

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Abstract

The generation of high-quality relativistic positron beams is a central area of research in experimental physics, due to their potential relevance in a wide range of scientific and engineering areas, ranging from fundamental science to practical applications. There is now growing interest in developing hybrid machines that will combine plasma-based acceleration techniques with more conventional radio-frequency accelerators, in order to minimise the size and cost of these machines. Here we report on recent experiments on laser-driven generation of high-quality positron beams using a relatively low energy and potentially table-top laser system. The results obtained indicate that current technology allows to create, in a compact setup, positron beams suitable for injection in radio-frequency accelerators.

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Sarri, G., Warwick, J., Schumaker, W., Poder, K., Cole, J., Doria, D., … Zepf, M. (2017). Spectral and spatial characterisation of laser-driven positron beams. Plasma Physics and Controlled Fusion, 59(1). https://doi.org/10.1088/0741-3335/59/1/014015

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