SL_EXIN

Plasma Acceleration Experiment at SPARC LAB
with External Injection

Home - Introduction - The SPARC LAB facility - The external injection experiment - References

At the SPARC LAB facility of INFN-LNF we are installing two transport lines for ultra-short electron bunches and an ultra-intense laser pulses, generated by the SPARC photo-injector and by the FLAME laser in a synchronized fashion at the tens of fs level, to co-propagate inside a hydrogen filled glass capillary, in order to perform acceleration of the electron bunch by a plasma wave driven by the laser pulse. The main aim of this experiment is to demonstrate that a high brightness electron beam can be accelerated by a plasma wave without any significant degradation of its quality. A 10 pC electron bunch, 10 fs long is produced by SPARC and transported to injection into the capillary, which is 100 micron wide, at a gas density around 1017 cm-3 . The laser pulse, 25 fs long, focused down to 65 microns into the capillary is injected ahead of the bunch, drives a weakly non-linear plasma wave with wavelength of about 130 microns. A proper phasing of the two pulses allows acceleration of electrons from the injection energy of 150 MeV up to about 570 MeV for a 8 cm long capillary.


Home - Introduction - The SPARC LAB facility - The external injection experiment - References

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