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High performance tokamak experiments with a ferritic steel wall on JFT-2M
| Content Provider | Scilit |
|---|---|
| Author | Tsuzuki, K. Kimura, H. Kawashima, H. Sato, M. Kamiya, K. Shinohara, K. Ogawa, H. Hoshino, K. Bakhtiari, M. Kasai, S. Uehara, K. Sasao, H. Kusama, Y. Isei, N. Miura, Y. Ogawa, T. Yamamoto, M. Shibata, T. Kikuchi, K. Miyachi, K. Ito, T. Ajikawa, H. Nomura, S. Tsutsui, H. Shimada, R. Ido, T. Hamada, Y. Fukumoto, N. Nagata, M. Uyama, T. Niimi, H. Yatsu, S. Kayukawa, N. Hino, T. Hirohata, Y. Nagashima, Y. Ejiri, A. Amemiya, A. Sadamoto, Y. Tsushima, A. |
| Copyright Year | 2003 |
| Description | Journal: Nuclear Fusion Compatibility between the plasma and low activation ferritic steel, which is a candidate material for fusion demonstration reactors, has been investigated step by step in the JFT-2M tokamak. We have entered the third stage of the Advanced Material Tokamak EXperiment (AMTEX), where the inside of the vacuum vessel wall is completely covered with ferritic steel plates ferritic inside wall (FIW). The effects of a FIW on the plasma production, impurity release, the operation region, and H-mode characteristics have been investigated. No negative effect has been observed up to now. A high normalized beta plasma of $β_{N}$ ~ 3, having both an internal transport barrier and a steady H-mode edge was obtained. A remarkable reduction in ripple trapped loss from 0.26 MW $m^{−2}$ (without ferritic steel) to less than 0.01 MW $m^{−2}$ was demonstrated by the optimization of the thickness profile of FIW. A code to calculate fast ion losses, taking into account the full three-dimensional magnetic structure was developed, and values obtained using the code showed good agreement with experimental results. Thus, encouraging results are obtained for the use of this material in the demo-reactor. |
| Related Links | http://iopscience.iop.org/article/10.1088/0029-5515/43/10/033/pdf |
| Ending Page | 1293 |
| Page Count | 6 |
| Starting Page | 1288 |
| ISSN | 00295515 |
| e-ISSN | 17414326 |
| DOI | 10.1088/0029-5515/43/10/033 |
| Journal | Nuclear Fusion |
| Issue Number | 10 |
| Volume Number | 43 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2003-10-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Nuclear Fusion Nuclear Energy and Engineering Magnetic Structure Three Dimensional |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nuclear and High Energy Physics Condensed Matter Physics |
