Rev.Sci.Instrum. Rev.Sci.Instrum., 2020, 91 (1), pp.013304. ⟨10.1063/1.5128546⟩ 18th International Conference on Ion Sources 18th International Conference on Ion Sources, Sep 2019, Lanzhou, China. pp.013304, ⟨10.1063/1.5128546⟩ Review of Scientific Instruments