Impact of ECRH launcher flexibility on NTM stabilization and advanced scenarios 
in large toroidal configurations as JET plasmas

Nowak, S.; Bruschi, A.; Ramponi, G.; Cirant, S.; Lazzaro, E.; Verhoeven, A. G. A.; Zohm, H.

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Impact of ECRH launcher flexibility on NTM stabilization and advanced scenarios in large toroidal configurations as JET plasmas

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Zohm, H.
Experimental Plasma Physics 2 (E2), Max Planck Institute for Plasma Physics, Max Planck Society;

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Citation

Nowak, S., Bruschi, A., Ramponi, G., Cirant, S., Lazzaro, E., Verhoeven, A. G. A., et al. (2003). Impact of ECRH launcher flexibility on NTM stabilization and advanced scenarios in large toroidal configurations as JET plasmas. In G. Giruzzi (Ed.), Proceedings of the 12th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Heating (pp. 329-334). New Jersey, NJ: World Scientific Publ.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-2D6F-A

Abstract

A beam-tracing code is used for extensive beam-tracing, ECCD and ECRH profile calculations in ideal JET-like plasmas with the main aim of specifying such crucial parameters for the ECRH launcher as the poloidal and toroidal steering ranges, the permitted error in the various launching angles and the optimal shape of the last mirrors reflecting surfaces. In order to be fusion-relevant, the calculations are performed on ideal target plasmas and equilibrium configurations scaled from real JET shots, selected by the JET-EP ECRH Physics Integration Project. The launching scheme is fully compliant with a launcher designed under the geometric constraints of JET, which consists of 6 to 8 beams arranged in pairs, with four end mirrors steerable both in the poloidal and in the toroidal directions. It is shown that with this arrangement all launching configurations requested by the physics goals of ECRH in a JET-like device are feasible.