| Автор | V P Bhatnagar |
| Автор | J Jacquinot |
| Автор | B J D Tubbing |
| Автор | D Stork |
| Автор | A Tanga |
| Автор | B Balet |
| Автор | G Bosia |
| Автор | M Bures |
| Автор | D Campbell |
| Автор | S Clement |
| Автор | A Hatayama |
| Автор | K Lawson |
| Автор | F Tibone |
| Автор | D F H Start |
| Дата выпуска | 1991-03-01 |
| dc.description | H-modes produced by ion-cyclotron resonance heating (ICRH) in a double-null X-point open divertor configuration in the JET Tokamak are studied, where the ICRH antennas, operated in the dipole (0, pi ) phasing, are located on the low-field side of the Tokamak. Beryllium evaporation on the nickel antenna screen and the first wall of the Tokamak played a crucial role in achieving H-modes with ICRH alone. In these discharges, all the characteristics typical of neutral-beam injection heating H-modes are found, and the global energy confinement time approaches two times the Goldston L-mode prediction. For most of their duration, ICRH H-modes are free from ELMs (edge-localized modes). In addition, the monster sawtooth (long sawtooth-free period) feature of ICRH is maintained during H-modes, leading to a central electron temperature (T<sub>c0</sub>) of 10 keV, nearly twice the value of the central ion temperature (T<sub>i0</sub>). ICRH H-modes often occur as a two-step transition and the antenna plasma coupling resistance (R<sub>c</sub>) also decreases in two steps. Theoretical values of R<sub>c</sub> agree well with experimental values during the H-phase. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | ICRH-produced H-modes in the JET tokamak |
| Тип | paper |
| DOI | 10.1088/0741-3335/33/2/002 |
| Electronic ISSN | 1361-6587 |
| Print ISSN | 0741-3335 |
| Журнал | Plasma Physics and Controlled Fusion |
| Том | 33 |
| Первая страница | 99 |
| Последняя страница | 121 |
| Аффилиация | V P Bhatnagar; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | J Jacquinot; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | B J D Tubbing; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | D Stork; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | A Tanga; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | B Balet; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | G Bosia; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | M Bures; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | D Campbell; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | S Clement; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | A Hatayama; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | K Lawson; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | F Tibone; JET Joint Undertaking, Abingdon, UK |
| Аффилиация | D F H Start; JET Joint Undertaking, Abingdon, UK |
| Выпуск | 2 |
