A stripping member, a stripping assembly and a method for extracting a particle beam from a cyclotron

摘要

The present invention relates to a for stripping electrons off a negatively charged particle beam at the periphery of a cyclotron for extracting a particle beam out of said cyclotron, said stripping member comprising a first stripper foil adapted for being located at the periphery of said cyclotron so that said particle beam passes through said first stripper foil, characterized in that it comprises a second stripper foil adapted for being located at the periphery of said cyclotron at a more peripheral radius than said first stripper foil so that said negatively charged particle beam passes through said second stripper foil when said first stripper foil is damaged.