1. First boronization in KSTAR: Experiences on carborane
- Author
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Hyun-Jong Woo, Kwang-Pyo Kim, E. K. Park, KunSu Lee, Hong-Tack Kim, Kyung-Min Kim, Kaprai Park, Kyu-Sun Chung, H.L. Yang, Jaemin Park, Jong-Ho Sun, Yeong-Kook Oh, W.C. Kim, Hak-Kun Kim, Taehyeop Lho, S.H. Hong, and Hoon-Kyun Na
- Subjects
Nuclear and High Energy Physics ,Auger electron spectroscopy ,Tokamak ,Materials science ,Analytical chemistry ,Variable angle ,law.invention ,Nuclear Energy and Engineering ,X-ray photoelectron spectroscopy ,law ,Ellipsometry ,KSTAR ,Carborane ,General Materials Science ,Thin film - Abstract
First boronization was performed in KSTAR tokamak during 2009 campaign in order to reduce oxygen impurities and to lower the power loss due to radiation. We report the results from the experiences on carborane during the first boronization in KSTAR. After the boronization, H2O and O2 level in the vacuum vessel are reduced significantly. The characteristics of the deposited thin films were analyzed by variable angle spectroscopic ellipsometry, XPS, and AES. ∼1.78 × 1016 cm−2 s−1 of carbon flux on the wall is estimated by using cavity technique.
- Published
- 2011
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