Patent ID: 6495842
Filing Date: 2002-12-17
Classification: A61N,G21G,H01J,H05H

Abstract:
An apparatus for the doping of vessel support structures with radioactive and non-radioactive atoms, comprising an Electron-Cyclotron-Resonance-Ion-Source (ECRIS) with an ion extraction arrangement for extracting an ion beam from said ECRIS, a magnetic separation device for the mass-specific splitting of the ion beam arranged in a downstream area of the ion beam extracted and an irradiation chamber in which the vessel supports are exposed to the selected partial ion beam, said apparatus including a microwave permeable cylindrical plasma chamber with a six-pole magnet arrangement equally distributed over the circumference of said cylindrical plasma chamber, a thin-walle electrically conductive tube portion disposed co-axially between the cylindrical plasma chamber and said six-pole magnet arrangement surrounding said cylindrical plasma chamber, said tube portion having an in-coupling opening in its wall and being axially movable on said cylindrical plasma chamber for an adjustment of the optimal microwave in-coupling, and a co-axial cable having an outer sleeve in electrical contact with said tube portion and an inner conductor extending through said in-coupling opening in an insulated fashion and forming at the inner wall of said tube portion a flat loop having an end in contact with the inner wall of said tube portion.