Compact 2.45 GHz ECR Ion Source for generation of singly-charged ions Riyaz Fatkullin, Sergey Bogomolov, Konstantin Kuzmenkov and Andrey Efremov EPJ Web Conf., 177 (2018) 08003 Published online: 18 April 2018 DOI: 10.1051/epjconf/201817708003