Patent ID: 9383460
Filing Date: 2016-07-05
CPC Classification: B23K,G01T,H01J

Claim Text:
1. A beam imaging sensor comprising: a cylindrically-shaped sensor body, wherein the sensor body has a top end and a bottom end, the top end having at least one channel formed therein; a Faraday cup located within the at least one channel, the Faraday cup being positioned to receive at least a portion of an electron, or ion, beam; an inner slit-forming disc and an outer slit-forming disc positioned at the top end of the at least one channel so as to be positioned above the Faraday cup, the inner and outer slit-forming discs being able to nest together to form a slit there between and where the slit so formed permits passage of at least a portion of an electron, or ion, beam to the Faraday cup located there below; and at least one conductive lead in electrical communication with the Faraday cup, the at least one conductive lead being able to conduct an electrical signal generated by the portion of the beam that comes into contact with the Faraday cup, wherein the combination of the Faraday cup, the inner slit-forming disc and the outer slit-forming disc form a beam path from the outside of the beam imaging sensor to the Faraday cup that is parallel to the central axis of the cylindrically-shaped sensor body such that the portion of the electron, or ion, beam must be parallel to the central axis of the cylindrically-shaped sensor body to enter the beam path.