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| MOPPH053 |
Ultra-high Brightness Electron Beams by All Optical Plasma Based Injectors
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102 |
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- V. Petrillo
Universita' degli Studi di Milano, Milano
- C. Benedetti, P. Londrillo
INFN-Bologna, Bologna
- L. Serafini, P. Tomassini
Istituto Nazionale di Fisica Nucleare, Milano
- A. Sgattoni, G. Turchetti
Bologna University, Bologna
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We studied the generation of low emittance high current mono-energetic beams from plasma waves driven by ultra-short laser pulse, for achieving beam brightness of interest for FEL applications. The aim is to show the feasibility of generating nC charged beams carrying peak currents much higher than those attainable with photoinjectrors, but with comparable emittance and energy spread, compatibly with typical FEL requirements. We have studied a LWFA plasma driving scheme on a gas jet modulated in areas of different densities with sharp density gradients. Currents up to 100 kA can be reached. We present simulations made with the new code Aladyn, implemented ah hoc for this problem, which show beams of 30 MeV with 20 kA of current, 0.3 mm mrad of emittance and 0.4% of energy spread. This beam has been injected in a e.m. wiggler, giving superradianat, strongly coherent X radiation.
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