TJ-II:Electron Bernstein Wave Heating

In TJ-II, the possibility of achieving high-density plasmas using Electron Bernstein Wave Heating (EBWH), which has been used successfully in the W7-AS and H-J stellarators, is being explored. ^[1] ^[2] It offers a way of overcoming the cut-off density limit associated with ECRH methods (1.7×10¹⁹ m^-3 in TJ-II). Preliminary studies highlighted several promising EBWH first harmonic schemes, i.e. at 28 GHz. ^[3]

The system is located in sector D6.

TJ-II Electron Bernstein Wave Heating system diagram.

TJ-II Electron Bernstein Wave Heating system photo, as viewed from the mounting flange for the heating system corrugated waveguide.

References

[1] A. Fernández et al., The design of an electron Bernstein wave heating system for the TJ-II stellarator, Fusion Sci. Tech. 46, pp. 335-341 (2004)

[2] A. Fernández et al., Status of the TJ-II Electron Bernstein Waves heating project, Fusion Engineering and Design 74, Issues 1-4 (2005) 325-329

[3] F. Castejón et al., Electron Bernstein wave heating calculations for TJII plasmas, Fusion Sci. Tech. 46, pp. 327-334 (2004)

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