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Author(s):
H. Sanuki, K. Itoh, K. Ida and S. - I. Itoh
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Title:
On Radial Electric Field Structure in CHS Torsatron / Heliotron
Date of publication:
June 1991
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Key words:
radial electric field, CHS torsatron/heliotron, Neoclassical, fast ion orbit loss, charge exchange loss
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Abstract:
The radial electric field structure in helical system is discussed taking into account the effects of the orbit loss and charge exchange loss in addition to the neoclassical fluxes. Analysis is made for the CHS torsatron/heliotron, in which the radial electric field E_r was estimated experimentally. It was found that the fast ion orbit loss and charge exchange loss have strong influence on the profile of the radial electric field, particularly near the plasma periphery. The absolute value of E_r in the experiments is still more negative than the theoretical Prediction.
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