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TY - CPAPER AU - Muto, H. AU - Hattori, T. AU - Kase, M. AU - Kobayashi, K. AU - Kotaka, Y. AU - Kubono, S. AU - Nishimura, M. AU - Ohshiro, Y. AU - Oyaizu, M. AU - Shimoura, S. AU - Watanabe, S.-I. AU - Yamaguchi, H. AU - Yamaka, S. TI - Observation of Sublimation Effect of Mg and Ti Ions at the Hyper-Electron Cyclotron Resonance Ion Source J2 - Proc. of Heavy Ion Accelerator Technology Conference (HIAT2015), Yokohama, Japan, 7-11 September 2015 AB - Light intensities of a grating monochromator during plasma chamber baking and 24Mg⁸⁺ and 48Ti¹³⁺ beam operation were observed at the Hyper-Electron Cyclotron Resonance ion source. During chamber baking almost all light intensities were Fe I and Fe II. However, when MgO or TiO2 rod was inserted into the plasma and the beam operation was started the light intensity spectrum was drastically changed and most of the Fe I and Fe II lights were disappeared and Mg or Ti light intensities were coming out. In this paper we describe vacuum conditions of ECR ion source during chamber baking and beam tuning. PB - JACoW CY - Geneva, Switzerland SP - 262 EP - 264 KW - ion KW - plasma KW - vacuum KW - ion-source KW - ECR DA - 2016/02 PY - 2016 SN - 978-3-95450-131-1 DO - 10.18429/JACoW-HIAT2015-WEPB29 UR - http://accelconf.web.cern.ch/AccelConf/HIAT2015/papers/wepb29.pdf ER -