| Автор | D R Roberts |
| Автор | R V Bravenec |
| Автор | R D Bengtson |
| Автор | D L Brower |
| Автор | G Cima |
| Автор | T P Crowley |
| Автор | A Darbar |
| Автор | P H Edmonds |
| Автор | H Gasquet |
| Автор | K W Gentle |
| Автор | G A Hallock |
| Автор | J W Heard |
| Автор | P D Hurwitz |
| Автор | Y Jiang |
| Автор | Y Y Karzhavin |
| Автор | J Lierzer |
| Автор | A Nikitin |
| Автор | A Ouroua |
| Автор | D M Patterson |
| Автор | P E Phillips |
| Автор | S Reedy |
| Автор | B Richards |
| Автор | W L Rowan |
| Автор | P M Schoch |
| Автор | D C Sing |
| Автор | E R Solano |
| Автор | D Storek |
| Автор | C Watts |
| Автор | D Winslow |
| Автор | A J Wootton |
| Автор | L Zeng |
| Автор | B Zhang |
| Автор | S-B Zheng |
| Дата выпуска | 1996-08-01 |
| dc.description | H-mode transitions in TEXT-U limiter plasmas have been observed at and kA ( kW) with at least 300 kW of central electron-cyclotron heating (ECH). These are dithering transitions which are induced by sawtooth crashes and display the typical signatures of H-modes ( drop, spontaneous density increase, evidence of a transport barrier). However, they show only a slight improvement over L-mode energy confinement. The vessel walls are boronized and conditioned prior to experiments to achieve low-impurity influx and particle recycling. Discharges which undergo transitions are fuelled almost entirely on residual recycling. Transitions are observed when limited on a toroidally localized top or bottom limiter and, more often, when the limiter surface is `fresh', which is achieved by alternating between top and bottom limiters on successive shots. No strong dependence upon the distance from the low-field-side limiter has been found. Transitions are not yet observed when limited on the high-field-side wall tiles or in the case of TEXT-U diverted configurations. Preliminary measurements with the 2 MeV heavy-ion beam probe (HIBP) (in the core) and Langmuir probes (in the edge) indicate that the plasma potential drops outside the q = 1 radius while only small changes are observed in the density fluctuation level. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | H-mode development in TEXT-U limiter plasmas |
| Тип | paper |
| DOI | 10.1088/0741-3335/38/8/004 |
| Electronic ISSN | 1361-6587 |
| Print ISSN | 0741-3335 |
| Журнал | Plasma Physics and Controlled Fusion |
| Том | 38 |
| Первая страница | 1117 |
| Последняя страница | 1125 |
| Аффилиация | D R Roberts; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | R V Bravenec; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | R D Bengtson; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | D L Brower; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | G Cima; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | T P Crowley; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | A Darbar; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | P H Edmonds; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | H Gasquet; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | K W Gentle; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | G A Hallock; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | J W Heard; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | P D Hurwitz; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | Y Jiang; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | Y Y Karzhavin; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | J Lierzer; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | A Nikitin; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | A Ouroua; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | D M Patterson; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | P E Phillips; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | S Reedy; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | B Richards; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | W L Rowan; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | P M Schoch; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | D C Sing; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | E R Solano; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | D Storek; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | C Watts; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | D Winslow; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | A J Wootton; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | L Zeng; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | B Zhang; University of Texas at Austin, Austin, TX 78712, USA |
| Аффилиация | S-B Zheng; University of Texas at Austin, Austin, TX 78712, USA |
| Выпуск | 8 |
