Characterization of Ion Cyclotron Wall Conditioning Using Material Probes in LHD
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概要
- 論文の詳細を見る
The ion cyclotron wall conditioning (ICWC) is one of the conditioning methods to reduce impurities and to remove tritium from the plasma facing components. Among the advantages of ICWC are the possible operation under strong magnetic field for fully torus area based on the charge exchange damage observed in thin SS samples arranged on a hexahxedron block holder with three different facings, the areas influenced by ICWC is estimated. On the plasma facing area of the material holder, high density of helium bubbles is observed by transmission electron microscope (TEM). But the other areas show no observable damage. The fact that the bubble were observed only in a sample facing the plasma implies that the effective particles, most probably charge exchange neutrals come to the wall straightly Thus, cleaning of the surfaces un-exposed to plasma directly and those in shadow area is difficult by ICWC.
著者
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ISOBE Mitsutaka
National Insitute for Fusion Science
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KUMAZAWA Ryuhei
National Insitute for Fusion Science
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MASUZAKI Suguru
National Insitute for Fusion Science
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SEKI Tetsuo
National Insitute for Fusion Science
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Mutoh Takashi
National Institute For Fusion Science
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ASHIKAWA Naoko
National Institute for Fusion Science
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NISHIURA Masaki
National Institute for Fusion Science
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MUROGA Takeo
National Institute for Fusion Science
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Saito Kenji
National Institute of Genetics Research Organization of Information and Systems
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KASAHARA Hiroshi
National Institute for Fusion Science
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TOKITANI Masayuki
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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YOSHIDA Naoaki
Kyushu University, 6-1 Kasuga-kouen, Kasuga 816-8580, Japan
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NISHIURA Masaki
National Institute for Fusion Science, Toki 509-5292, Japan
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IWAKIRI Hirotomo
Ryukyu University, Naha 903-0213, Japan
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ASHIKAWA Naoko
National Institute for Fusion Science, Toki 509-5292, Japan
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MUROGA Takeo
National Institute for Fusion Science, Toki 509-5292, Japan
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MIYAMOTO Mitsutaka
Shimane University, Matsue 690-8504, Japan
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TOKITANI Masayuki
National Institute for Fusion Science
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SAITO Kenji
National Institute for Fusion Science
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YOSHIDA Naoaki
Kyushu University, Kasuga 816-8580, Japan
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KUMAZAWA Ryuhei
National Institute for Fusion Science, Toki 509-5292, Japan
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