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Abstract

An electron beam irradiation processing device including an electron beam tube and a current detection unit disposed outside of the window of the electron beam tube. The electron beam tube is adapted to radiate electron beams and has a window and an associated power-source unit that provides a power source. The current detection unit includes at least one of a conductor and a semiconductor covered by an insulating film, and an electron beam level measurement unit having a current measurement unit that measures the current flowing through the current detection unit. The amount of electron beams output from the electron beam tube is controlled by controlling the power-source unit as a function of the current flowing through the current detection unit. In addition, a method of measuring amount of electron beams radiated from an electron beam tube with a window including the steps of providing a current detection unit and measuring amount of electron beams radiated from the electron beam tube by measuring the current flowing through the current detection unit.

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First Claim