Spectral and spatial characterisation of laser-driven positron beams. (18th October 2016)

• Record Type: Journal Article
• Authors: Sarri, G; Warwick, J; Schumaker, W; Poder, K; Cole, J; Doria, D; Dzelzainis, T; Krushelnick, K; Kuschel, S; P D Mangles, S; Najmudin, Z; Romagnani, L; M Samarin, G; Symes, D; G R Thomas, A; Yeung, M; Zepf, M
• Is Part Of: Plasma physics and controlled fusion. Volume 59:Number 1(2017:Jan.)
• Publication Date: 2016-10-18
• Subjects: laser wakefield acceleration -- positron beams -- injection -- hybrid accelerators; Plasma (Ionized gases) -- Periodicals; Controlled fusion -- Periodicals; 530.44
• DOI: 10.1088/0741-3335/59/1/014015
• Languages: English
• ISSNs: 0741-3335

Abstract

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.