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TY - CONF AU - Takeuchi, Y. AU - Iwashita, Y. AU - Tongu, H. ED - Pei, Guoxi ED - Schaa, Volker RW ED - Chin, Yong Ho ED - Fu, Shinian ED - Zhao, Ning TI - Compact H⁺ ECR Ion Source with Pulse Gas Valve J2 - Proc. of LINAC2018, Beijing, China, 16-21 September 2018 CY - Beijing, China T2 - Linear Accelerator Conference T3 - 29 LA - english AB - We are developing a compact ECR H⁺ ion source with pulse gas valve. In the case of high current ion linac, the distance between the ion source and the first accelerating tube such as RFQ must be as short as possible to reduce the space charge effect, while operating in a high electric field a good vacuum condition is desirable. Since hydrogen gas always flows out from ion sources if the plasma chamber is filled with the gas, vacuum pumping systems have to evacuate the gas enough before the first accelerating tube. The pulse gas injection system achieved by a fast piezo gas valve can reduce the gas load on the vacuum evacuation system and is suitable for installing the ion source close to the RFQ. PB - JACoW Publishing CP - Geneva, Switzerland SP - 955 EP - 957 KW - ion-source KW - plasma KW - ECR KW - extraction KW - GUI DA - 2019/01 PY - 2019 SN - 2226-0366 SN - 978-3-95450-194-6 DO - DOI: 10.18429/JACoW-LINAC2018-THPO126 UR - http://jacow.org/linac2018/papers/thpo126.pdf ER -