Patent ID: 8530864

Claim:
A device for determining control parameters for a particle irradiation system, the particle irradiation system being configured to dispose different dose values at different sampling points in a target volume, the target volume comprising a plurality of isoenergy layers, each isoenergy layer of the plurality of isoenergy layers being associated with a different particle beam energy, the device comprising: an input operable to receive information relating to a predefined dose distribution via target points; and a determination component operable to determine a particle number distribution to be deposited during an irradiation via sampling points, wherein the determination component is configured to determine the particle number distribution using the predefined dose distribution and a variable taking differences in the particle number distribution between particle numbers of different sampling points associated with the same isoenergy layer of the plurality of isoenergy layers into account, with the variable, the different sampling points being compared in terms of corresponding article numbers, each isoenergy layer of the plurality of isoenergy layers characterizing a penetration depth of particles having the associated particle beam energy.