The first results with the new JYFL 14 GHz ECR ion source

Abstract

A new 14 GHz ECR ion source has been built for the Accelerator Laboratory in the Department of Physics (JYFL), University of Jyväskylä. This source belongs to the family of the LBNL AECR-U-based ECR ion sources. The operation during the first four months has shown that the new ion source performs well and is able to produce intensive highly charged ion beams. For example, 145 μA of O 7+ ion beam was recorded. The production of iron and boron ion beams was tested using the MIVOC method. The 56Fe 11+ ion beam current reached a value of 115 μA. The intensities of 11B 3+ and 11B 5+ ion beams were 235 and 52 μA, respectively. This iron beam intensity is the second highest and the boron beam intensities are the highest ever produced by an ECR ion source. In all the tests an extraction voltage of 10 kV was applied.