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Return To: Session OV7/FT - Fusion Technology
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(FT/4) The Helias Reactor

J. Kisslinger1), C. D. Beidler1), E. Harmeyer1), F. Herrnegger1), Yu. Igitkhanov1), A. Kendl1), Ya. I. Kolesnichenko2), V. V. Lutsenko2), C. Nührenberg1), I. Sidorenko1), E. Strumberger1), H. Wobig1), Yu. V. Yakovenko2)
1) Max-Planck Institut für Plasmaphysik, EURATOM Association D-85740 Garching bei München, Germany.
2) Scientific Centre ``Institute for Nuclear Reseach'' 03680 Kyiv, Ukraine

Abstract.  The Helias reactor is an upgraded version of the Wendelstein 7-X experiment. A straightforward extrapolation of Wendelstein 7-X leads to HSR5/22, which has 5 field periods and a major radius of 22 m. HSR4/18 is a more compact Helias reactor with 4 field periods and 18 m major radius. Stability limit and energy confinement times are nearly the same as in HSR5/22, thus the same fusion power (3000 MW) is expected in both configurations. Neoclassical transport in HSR4/18 is very low, the effective helical ripple is below 1%. The paper describes the power balance of the Helias reactor, the blanket and maintenance concept. The coil system of HSR4/18 comprises 40 modular coils with NbTi-superconducting cables. The reduction from 5 to 4 field periods and the concomitant reduction in size will also reduce the cost of the Helias reactor.

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IAEA 2001