Patent ID: 7348568

Claim:
An apparatus for characterization of a high power electron welding beam having a power range of more than 1 kW, comprising: a high power electron welding beam having a power range of more than 1 kW; a slit disk assembly comprising an electrical conducting refractory material having at least one radial slit extending through said slit disk assembly and a slit disk assembly central hole extending through said slit disk assembly, said radial slit and slit disk assembly central hole being positioned to receive the high power electron welding beam having a power range of more than 1 kW and allow the high power electron welding beam having a power range of more than 1 kW to pass through said at least one radial slit and said slit disk assembly central hole; a conducting disk located below said slit disk assembly, said conducting disk having at least one conducting disk radial slit extending through said conducting disk and a conducting disk central hole extending through said conducting disk, said at least one conducting disk radial slit positioned below and aligned with said at least one radial slit in said slit disk assembly and said conducting disk central hole positioned below and aligned with said slit disk assembly central hole, said at least one conducting disk radial slit and said conducting disk central hole being positioned to receive the high power electron welding beam having a power range of more than 1 kW and allow the high power electron welding beam to pass through said at least one conducting disk radial slit and said conducting disk central hole; a Faraday cup assembly located below said conducting disk and positioned to receive the high power electron welding beam having a power range of more than 1 kW that passes through said conducting disk central hole; and a start-stop target located adjacent said slit disk assembly, wherein said start-stop target is located a fixed distance radially outward from said at least one radial slit, and wherein said start-stop target is located a fixed distance radially outward from said slit disk assembly central hole, and wherein said start-stop target is positioned to receive the high power electron welding beam having a power range of more than 1 kW, and wherein said welding beam having a power range of more than 1 kW is adapted to be translated to said at least one radial slit.