Patent ID: 8039819

Claim:
A device for creating a spatial dose distribution in a medium volume, the device comprising: a laser system producing laser pulses with a pulse length shorter than 200 fs and capable to be focused to peak intensities greater than 10^18 W/cm^2; at least one electron source for releasing a plurality of high-energy quasi-monoenergetic electron pulses upon irradiation with said laser pulses, said high-energy quasi-monoenergetic electron pulses propagating into the medium volume, said high-energy quasi-monoenergetic electron pulses comprising electrons having an energy greater than 100 MeV; a control unit comprising data storage that stores a provided pattern, said provided pattern comprising at least one of (i) a dose pattern, (ii) an electron fluence pattern and (iii) a light pattern, said control unit for adjusting light paths of at least some of the laser pulses in such a way that high-energy quasi-monoenergetic electron pulses are emitted from the irradiated at least one electron source on different trajectories through the medium volume thereby depositing their dose in the medium volume according to said provided pattern.