RF modeling of the ITER-relevant lower hybrid antenna

Julien Hillairet (1) , Sylvio Ceccuzzi (2) , J. Belo (3) , L. Marfisi (1) , J.F. Artaud (1) , Y.S. Bae (4) , G. Berger-By (1) , J.M. Bernard (1) , Ph. Cara (1) , A. Cardinali (2) , C. Castaldo (2) , R. Cesario (2) , J. Decker (1) , L. Delpech (1) , A. Ekedahl (1) , J. Garcia (1) , P. Garibaldi (1) , M. Goniche (1) , D. Guilhem (1) , G.T. Hoang (1) , H. Jia (5) , Q.Y. Huang (5) , Frédéric Imbeaux (1) , F. Kazarian (1) , S.H. Kim (4) , Y. Lausenaz (1) , R. Maggiora (6) , R. Magne (1) , S. Meschino (2) , D. Milanesio (6) , F. Mirizzi (2) , W. Namkung (7) , L. Pajewski (8) , L. Panaccione (8) , Y. Peysson (1) , A. Saille (1) , G. Schettini (8) , M. Schneider (1) , P.K. Sharma , A.A. Tuccillo (2) , O. Tudisco (2) , G. Vecchi (2) , R. Villari (2) , K. Vulliez (1) , Y. Wu (5) , Q. Zeng (5)

1 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
2 ENEA - Italian National agency for new technologies, Energy and sustainable economic development [Frascati]
3 Associacao Euratom-IST, Universidade Tecnica de Lisboa
4 NFRI - National Fusion Research Institute
5 ASIPP - Institute of Plasma Physics, Chinese Academy of Sciences
6 Polito - Politecnico di Torino = Polytechnic of Turin
7 Department of Physics, Pohang University of Science and Technology
8 UNIROMA - Università degli Studi di Roma "La Sapienza" = Sapienza University [Rome]

In the frame of the EFDA task HCD-08-03-01, a 5 GHz Lower Hybrid system which should be able to deliver 20 MW CW on ITER and sustain the expected high heat fluxes has been reviewed. The design and overall dimensions of the key RF elements of the launcher and its subsystem has been updated from the 2001 design in collaboration with ITER organization. Modeling of the LH wave propagation and absorption into the plasma shows that the optimal parallel index must be chosen between 1.9 and 2.0 for the ITER steady-state scenario. The present study has been made with $n_{||}$ = 2.0 but can be adapted for $n_{||}$ = 1.9. Individual components have been studied separately giving confidence on the global RF design of the whole antenna.

Keywords: Lower Hybrid; Current Drive; LHCD; PAM; ITER

Domains: Engineering Sciences [physics]; Plasmas; Engineering Sciences [physics]; Electromagnetism; Physics [physics]; Physics [physics]; Plasma Physics [physics.plasm-ph]

Julien Hillairet, Sylvio Ceccuzzi, J. Belo, L. Marfisi, J.F. Artaud, et al.. RF modeling of the ITER-relevant lower hybrid antenna. Fusion Engineering and Design, 2011, 86 (6-8), pp.823-826. ⟨10.1016/j.fusengdes.2011.03.003⟩. ⟨cea-02459956⟩