q = 1 advanced tokamak experiments in JET and comparison with ASDEX Upgrade
E Joffrin; R Wolf; B Alper; Yu Baranov; C D Challis; M de Baar; C Giroud; C W Gowers; N C Hawkes; T C Hender; M Marachek; D Mazon; V Parail; A Peeters; K-D Zastrow; contributors to the EFDA-JET Workprogramme
Журнал:
Plasma Physics and Controlled Fusion
Дата:
2002-07-01
Аннотация:
The ASDEX Upgrade advanced tokamak scenario with central q close to 1 has been reproduced on JET. For almost identical q profiles, the comparative analysis does show similar features like the fishbone activity and the current profile evolution. In JET, transport analyses indicates that an internal transport barrier (ITB) has been produced. Gradient length criterions based on the ion temperature gradient turbulence stabilization are used to characterize the ITBs in both devices. The trigger of ITBs is associated with rational surfaces in both devices although the underlying physics for this triggering seems different. This experiment has the prospect to get closer to identity experiments between the two tokamaks.
413.8Кб