Heating, current drive and energetic particle studies on JET in preparation of 
ITER operation

Noterdaeme, J.-M.; Budny, R.; Cardinali, A.; Castaldo, C.; Cesario, R.; Crisanti, F.; deGrassie, J.; D'Ippolito, D. A.; Durodié, F.; Ekedahl, A.; Figueiredo, A.; Ingesson, C.; Joffrin, E.; Hartmann, D.; Heikkinen, J.; Hellsten, T.; Jones, T.; Kiptily, V.; Lamalle, P.; Litaudon, X.; Nguyen, F.; Mailloux, J.; Mantsinen, M.; Mayoral, M.; Mazon, D.; Meo, F.; Monakhov, I.; Myra, J. R.; Paméla, J.; Pericoli, V.; Petrov, Yu.; Sauter, O.; Sarazin, Y.; Sharapov, S. E.; Tuccillo, A. A.; van Eester, D.; JET EFDA Contributors

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Heating, current drive and energetic particle studies on JET in preparation of ITER operation

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Noterdaeme, J.-M.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

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Hartmann, D.
Technology (TE), Max Planck Institute for Plasma Physics, Max Planck Society;

Meo, F.
Max Planck Society;

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Zitation

Noterdaeme, J.-M., Budny, R., Cardinali, A., Castaldo, C., Cesario, R., Crisanti, F., et al. (2003). Heating, current drive and energetic particle studies on JET in preparation of ITER operation. In 19th Fusion Energy Conference.

Zitierlink: https://hdl.handle.net/21.11116/0000-0008-9158-1

Zusammenfassung

This paper summarizes the recent work on JET in the three areas of heating, current drive and energetic particles. The achievements have extended the possibilities of JET, have a direct connection to ITER operation and provide new and interesting physics. Toroidal rotation profiles of plasmas heated far off axis with little or no refuelling or momentum input are hollow with only small differences on whether the power deposition is located on the low field side or on the high field side. With LH current drive the magnetic shear was varied from slightly positive to negative. The improved coupling (through the use of plasma shaping and CD₄) allowed up to 3.4 MW of PLH in internal transport barrier (ITB) plasmas with more than 15 MW of combined NBI and ICRF heating. The q-profile with negative magnetic shear and the ITB could be maintained for the duration of the high heating pulse (8 s). Fast ions have been produced in JET with ICRF to simulate alpha particles: by using third harmonic ⁴He heating, beam injected ⁴He at 120 kV were accelerated to energies above 2 MeV, taking advantage of the unique capability of JET to use NBI with ⁴He and to confine MeV class ions. ICRF heating was used to replicate the dynamics of alpha heating and the control of an equivalent Q = 10 `burn' was simulated.