Controlling the Profile of Ion-Cyclotron-Resonant Ions in JET with the Wave-Induced Pinch Effect

M. J. Mantsinen, L. C. Ingesson, T. Johnson, V. G. Kiptily, M.-L. Mayoral, S. E. Sharapov, B. Alper, L. Bertalot, S. Conroy, L.-G. Eriksson, T. Hellsten, J.-M. Noterdaeme, S. Popovichev, E. Righi, and A. A. Tuccillo

Phys. Rev. Lett. 89, 115004 – Published 26 August 2002

Abstract

Experiments on the JET tokamak show that the wave-induced pinch in the presence of toroidally asymmetric waves can provide a tool for controlling the profile of ion-cyclotron-resonant ${}^{3}H e$ ions. Direct evidence for the wave-induced pinch has been obtained from the measured $γ$ -ray emission profiles. Concurrent differences in the excitation of Alfvén eigenmodes (AEs), sawtooth stabilization, electron temperatures, and fast-ion stored energies are observed. The measured location of the AEs and $γ$ -ray emission profiles are consistent with the fast-ion radial gradient providing the drive for AEs.

Received 15 April 2002

DOI:https://doi.org/10.1103/PhysRevLett.89.115004

Authors & Affiliations

M. J. Mantsinen¹, L. C. Ingesson², T. Johnson³, V. G. Kiptily⁴, M.-L. Mayoral^4,5, S. E. Sharapov⁴, B. Alper⁴, L. Bertalot⁶, S. Conroy³, L.-G. Eriksson⁵, T. Hellsten^3,7, J.-M. Noterdaeme⁸, S. Popovichev⁴, E. Righi^9,*, and A. A. Tuccillo⁶

¹Association Euratom-Tekes, Helsinki University of Technology, Finland
²Association Euratom-FOM, FOM-Rijnhuizen, TEC, Nieuwegein, The Netherlands
³Euratom-VR Association, Swedish Research Council, Stockholm, Sweden
⁴Association Euratom-UKAEA, Culham Science Centre, Abingdon, OX14 3DB, United Kingdom
⁵Association EURATOM-CEA sur la Fusion, CEA Cadarache, St. Paul lez Durance, France
⁶Associazione EURATOM-ENEA sulla Fusione, Frascati, Rome, Italy
⁷EFDA-JET CSU, Culham Science Centre, Abingdon, United Kingdom
⁸Max-Planck IPP-EURATOM Assoziation, Garching, Germany
⁹EFDA CSU-Garching, Garching, Germany

^*Present address: European Commission, Brussels, Belgium.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 89, Iss. 11 — 9 September 2002

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review Letters