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TY - UNPB AU - Iwashita, Y. AU - Takeuchi, Y. AU - Tongu, H. ED - Schaa, Volker RW ED - Pisciotta, Pietro TI - Compact High Current H⁺ ECR Ion Source With Fast Pulse Gas Valve J2 - Proc. of ECRIS2018, Catania, Italy, 10-14 September 2018 C1 - Catania, Italy T2 - International Workshop on ECR Ion Sources T3 - 23 LA - english AB - A compact H⁺ ECR ion source is under development. For reduction of the gas load to vacuum evacuation systems, the gas injection into the plasma chamber is chopped by a piezo- electric gas valve. To achieve the enough short time constant of gas flow, a small plasma chamber with 50 cm² is adopted and the chamber is operated in 6 GHz TE111 mode. The magnetic field is generated by permanent magnet for reduction of the required volume. The ECR volume is maximized by a multi mirror magnetic field in a limited plasma chamber volume. PB - JACoW Publishing CP - Geneva, Switzerland ER -