@article{7285,
  author = {P. Mantica and C. Angioni and B. Baiocchi and M. Baruzzo and M. N. A. Beurskens and J. P. S. Bizarro and R. V. Budny and P. Buratti and A. Casati and C. Challis and J. Citrin and G. Colyer and F. Crisanti and A. C. A. Figueiredo and L. Frassinetti and C. Giroud and N. Hawkes and J. Hobirk and E. Joffrin and T. Johnson and E. Lerche and P. Migliano and V. Naulin and A.G. Peeters and G. Rewoldt and F. Ryter and A. Salmi and R. Sartori and C. Sozzi and G. Staebler and D. Strintzi and T. Tala and M. Tsalas and D. Van Eester and T. Versloot and P. C. de Vries and J. Weiland},
  title = {Ion heat transport studies in JET},
  abstract = {Detailed experimental studies of ion heat transport have been carried out in JET exploiting the upgrade of active charge exchange spectroscopy and the availability of multi-frequency ion cyclotron resonance heating with (3)He minority. The determination of ion temperature gradient (ITG) threshold and ion stiffness offers unique opportunities for validation of the well-established theory of ITG driven modes. Ion stiffness is observed to decrease strongly in the presence of toroidal rotation when the magnetic shear is sufficiently low. This effect is dominant with respect to the well-known omega(ExB) threshold up-shift and plays a major role in enhancing core confinement in hybrid regimes and ion internal transport barriers. The effects of T(e)/T(i) and s/q on ion threshold are found rather weak in the domain explored. Quasi-linear fluid/gyro-fluid and linear/non-linear gyro-kinetic simulations have been carried out. Whilst threshold predictions show good match with experimental observations, some significant discrepancies are found on the stiffness behaviour.
},
  year = {2011},
  journal = {Plasma Physics and Controlled Fusion},
  volume = {53},
  number = {12},
  pages = {124033},
  month = {Dec},
  isbn = {0741-3335},
  doi = {10.1088/0741-3335/53/12/124033},
  note = {ISI Document Delivery No.: 870BLTimes Cited: 0Cited Reference Count: 58Part 1-2},
  language = {English},
}