The Nested High Voltage Generator and Linear Scanning for Security Inspection

Scanning electron beams and X‐ray producing electron beams over large areas is critical in a number of technical areas. We have combined a Nested High Voltage Generator (NHVG) operating at 1.15 MeV, a linear scanning system as originally proposed by Cleland, and a new collimator design to create a unique system for producing transmission and backscatter X‐Ray images. The NHVG is a DC accelerator with features of low ripple and efficient operation at medium power and it is used in this equipment. Images can be produced through 4 – 5 inches of steel, and backscatter images can also be produced. The scanning system is uniquely small, and it is capable of producing uniform irradiation over large volumes. We will describe the equipment and its performance.