Thermionic Emission Controller with PID Algorithm

B. Kania, J. Sikora (Lublin Univ. of Techn., Poland)

The reported digital thermionic emission current controllers use floating voltage sources which produce noise current and consequently decrease the quality of an electron beam. The implementation of digital control in an electron source biasing system without floating sources gives the average value of the electron emission current standard deviation of 0.015%. The described controller has been developed in order to investigate the properties of new hot-emitters.