Patent ID: 7005656

Claim:
An ion implanter, comprising: an elongated evacuated chamber having a distal end open along the path of travel of an ion beam; and a planar multilayer printed circuit board (PCB) at the distal end of the chamber, the PCB having a first portion sealingly covering the open distal end of the chamber and having a second portion extending outside the evacuated chamber, the PCB including (i) a plurality of Faraday cups on a proximal surface of the first portion, each Faraday cup being operative to generate an output current proportional to the ion beam current striking the Faraday cup, and (ii) a multi-contact connector on the second portion of the PCB, contacts of the connector being connected to respective ones of the Faraday cups by respective circuit traces of the PCB and being operative to carry the respective output currents of the Faraday cups to current measuring circuitry outside the evacuated chamber.