| Автор | F Porcelli |
| Автор | D Boucher |
| Автор | M N Rosenbluth |
| Дата выпуска | 1996-12-01 |
| dc.description | A model for sawtooth oscillations in tokamak experiments is outlined. A threshold criterion for the onset of internal kink modes and a prescription for the relaxed profiles immediately after the sawtooth crash have been implemented in a transport code that evolves the relevant plasma parameters. In this paper, applications of this model to the prediction of the sawtooth period and amplitude in projected ITER discharges are discussed. It is found that sawteeth can be stabilized transiently by the fusion alpha particles in ITER for periods that are long on the energy confinement timescale (). The sawtooth period depends on the amount of reconnected flux at the preceding sawtooth crash. When Kadomtsev's full reconnection model is used, the period can exceed 100 s. The sawtooth mixing radius following long duration sawtooth ramps can easily exceed half the plasma minor radius, raising questions about the desirability of transient sawtooth suppression. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Model for the sawtooth period and amplitude |
| Тип | paper |
| DOI | 10.1088/0741-3335/38/12/010 |
| Electronic ISSN | 1361-6587 |
| Print ISSN | 0741-3335 |
| Журнал | Plasma Physics and Controlled Fusion |
| Том | 38 |
| Первая страница | 2163 |
| Последняя страница | 2186 |
| Аффилиация | F Porcelli; ITER JWS, San Diego, CA, USA |
| Аффилиация | D Boucher; ITER JWS, San Diego, CA, USA |
| Аффилиация | M N Rosenbluth; ITER JWS, San Diego, CA, USA |
| Выпуск | 12 |
