An international database for the study of the formation of ITBs in tokamaks

A.C.C. Sips, A. Peeters, F. Ryter, R. Wolf, M. Greenwald, P. Gohil, C. Greenfield, J. Kinsey, E. Barbato, G. Bracco, P. Buratti, B. Esposito, Y. Baranov, T. Hellsten, T. Aniel, A. Bécoulet, L. Eriksson, X. Garbet, T. Hoang, F. ImbeauxX. Litaudon, P. Maget, T. Fukuda, T. Fujita, S. Ide, Y. Kamada, Y. Sakamoto, H. Shirai, T. Suzuki, T. Takizuka, D. Hogeweij, Yu. Esipchuk, N. Ivanov, N. Kirneva, K. Razumova, T. Hahm, E. Synakowski, E. Doyle

Research output: Contribution to journalArticle

15 Citations (Scopus)


For the first time, data from eight different tokamaks have been combined in an international database for internal transport barriers (ITBs). An analysis of the data for the formation of an ITB with dominant ion heating shows a clear dependence of the threshold power on the minor radius and line-averaged electron density for the formation of ion ITBs. The dependence of ITB formation on the toroidal magnetic field is weak. For the formation of ITBs with dominant electron heating, the database is smaller, but for the threshold power a strong increase with plasma size and a weak toroidal field dependence could also be identified. Based on these results, an expression for the power required to form an ITB is given using global variables only. These results give a basis for the analysis of the database using local values (like magnetic shear) and a detailed comparison with theory-based models.
Original languageEnglish
Pages (from-to)-
JournalPlasma Physics and Controlled Fusion
Issue number5 A
Publication statusPublished - 2002
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Sips, A. C. C., Peeters, A., Ryter, F., Wolf, R., Greenwald, M., Gohil, P., ... Doyle, E. (2002). An international database for the study of the formation of ITBs in tokamaks. Plasma Physics and Controlled Fusion, 44(5 A), -.