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Study of a closed divertor with strong gas puffing on JFT-2M
| Content Provider | Scilit |
|---|---|
| Author | Kawashima, H. Sengoku, S. Ogawa, T. Ogawa, H. Uehara, K. Miura, Y. Kimura, H. |
| Copyright Year | 1999 |
| Description | Journal: Nuclear Fusion In order to improve the particle control capability of the divertor and to demonstrate the possibility of a dense and cold divertor with high confinement plasmas, a closed divertor study has been carried out on the JFT-2M tokamak. When a strong gas puff is applied into the divertor chamber, a baffling effect is revealed by enhanced radiation localization and high neutral pressure in the divertor chamber, low core fuelling and sustainment of core confinement quality. The baffling effect is further enhanced with E × B flow and/or current in the scrape-off layer by applying divertor biasing. A dense and cold divertor state (n_{e}$^{div}$ ≈ 4 × $10^{19}m^{-3}$ and T_{e}$^{div}$ ≈ 4 eV), together with the improved confinement modes, can be obtained by strong gas puffing. Furthermore, the improved core confinement is not affected significantly in the high density region (_{e}/n_{e}$^{G}$ < 0.7). The UEDA code simulation reproduces the baffling effect and a dense and cold divertor plasma with a closed divertor structure. |
| Related Links | http://pdfs.semanticscholar.org/d4f8/b4e67dfb90fe526d5bf41827caa0fb1a380b.pdf http://iopscience.iop.org/article/10.1088/0029-5515/39/11Y/307/pdf |
| Ending Page | 1686 |
| Page Count | 8 |
| Starting Page | 1679 |
| ISSN | 00295515 |
| e-ISSN | 17414326 |
| DOI | 10.1088/0029-5515/39/11y/307 |
| Journal | Nuclear Fusion |
| Issue Number | 11Y |
| Volume Number | 39 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1999-11-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Nuclear Fusion Nuclear Energy and Engineering Study of A Closed Jft 2m Closed Divertor Strong Gas Gas Puffing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nuclear and High Energy Physics Condensed Matter Physics |
