TJ-II:Electron Bernstein Wave Heating

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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] Results have also been reported. [4]

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)
  4. J.M. García-Regaña, Á. Cappa, F. Castejón, J.B.O. Caughman, M. Tereshchenko, A. Ros, D.A. Rasmussen and J.B. Wilgen, Electron Bernstein waves emission in the TJ-II stellarator, Plasma Phys. Control. Fusion 53 (2011) 065009