Study of the ion beam extraction and transmission from ECRIS

Experiments concerning the ion beam extraction and transmission have been done in Institute of Modern Physics on the Lanzhou Electron Cyclotron Resonance Ion Source No.3 experimental platform. The authors have studied the influences of the plasma electrode extraction aperture, the biased voltage on the screening electrode and the Glaser lens. The emphasis is put on the research how to extract the ions produced in the source more efficiently and how to make the extracted ion beam transmission with less loss. In this paper, the results of the experiments are presented. With the results obtained, systematic analysis has been made and a general physical image has also been brought forward in this paper. (authors)