Arrangement for the widening of the particles of a particle beam energy distribution, particle therapy system and method for the widening of the particles energy distribution of a particle beam

摘要

An arrangement (28) to the expansion of the particles energy distribution of a particle beam (6) comprises at least two ripple filter (20a, 20b), which in the direction of radiation (s) are arranged one behind another in a row. For example, the arrangement (28) a ripple filter (20a) for broadening the beam of 2 mm and a downstream ripple filter (20b) for broadening the beam of 3 mm, wherein the combination of both filters (20a, 20b) at low cost and with high precision of the jet of 4 mm is obtained.