The ion source extraction and low energy beam transport (LEBT) of the JYFL 14 GHz ECRIS have been upgraded from the original design in two stages in 2013 and 2015. The current electrostatic extraction system consists of an adjustable voltage puller electrode and an accelerating einzel lens presented in figure below. Originally in 2013 there were two einzel lenses but the second one was removed as it caused outgassing of the second einzel lens and sometimes a Penning discharge between the einzel lenses.The main parameters of the extraction are
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