Abstract
In this paper we describe a 400kV multi-functional electron and positive ion irradiation accelerator based upon a 400kV Cockcroft-Walton, which was successfully used to accelerate electrons and positive ions with electron beam current of more than 5 mA. It has a scanning window of 1200mm in width, a scanning frame of 4500×1400mm. The transmitting speed of the scanning frame is between 0.1–5m backward and forward, continuously adjustable. The conversion time from accelerating positive ions to electrons is less than twenty minutes, and vice versa. It is proved that this accelerator can meet more requirements in the fields of nuclear physics and electron irradiation applications.
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