Bremen 2017 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 19: Plasma Diagnostics IV
P 19.5: Vortrag
Mittwoch, 15. März 2017, 16:00–16:15, HS 1010
A New Scheme for High Intensity Laser-Driven Electron Acceleration in a Plasma — •S.P. Sadykova1 and A.A. Rukhadze2 — 1Forschungszentrum Jülich - Jülich Supercomputing Centre (JSC) — 2Prokhorov General Physics Institute, RAS, Vavilov Street 38, Moscow, 119991, Russia
During the past few decades plasma accelerators have attracted increasing interest of scientists from all over the world due to its compactness, much cheaper construction costs compared to those for conventional one and various applications ranging from high energy physics to medical and industrial applications. During the past few decades plasma accelerators have attracted increasing interest of scientists from all over the world due to its compactness, much cheaper construction costs compared to those for conventional one and various applications ranging from high energy physics to medical and industrial applications. TTThe idea to accelerate the charged particles in a plasma medium using collective plasma fields belongs to Budker, Veksler, and Fainberg. Later on, another acceleration schemes were proposed including the laser plasma acceleration. In our earlier work we proposed a A New Scheme for High-Intensity Laser- Driven Electron Acceleration in a Plasma [1]. Due to the stimulated scattering of a laser pulse by electrons the longitudinal plasma wave is generated. When the instability increases the much higher magnitudes of electric fields compared to the conventional accelerators can be gained. It is known that the wakefield generating instability induced by the stimulated back-scattering (backwards the laser pulse) has a maximum increment. However, this acceleration scheme is not suitable for particle acceleration because due to the short laser pulse the scattering wave and laser wave soon get out of phase. Due to the laser forward scattering a forward wave is generated. In this case, the plasma wave and the injected electrons can stay in acceleration phase for a much longer time. We determine additional conditions, not considered earlier, for such a resonance at which the maximum electron acceleration energy can be gained, for ex. the plasma temperature, make an estimation of a plasma, injected electron bunch parameters, maximum amplitude of the generated electric field and assist them with simulations using the EPOCH-code. As the basis parameters and for comparison we use those set in the planned plasma acceleration experiment at SPARC LAB facility of INFN-LNF, Frascati, Italy, with external electron Injection [2].
[1] A. A. Rukhadze and S. P. Sadykova, T. G. Samkharadze, CPP 55, Issue 8, (2015) ;
[2] A. R. Rossi, et al.,Proceedings of IPAC2012, USA,WEEPPB002