Energy Balance of the LHRF Heating Experiments on the JFT-2 Tokamak

Imai, T.; Suzuki, Norio; Fujii, T.; Fujisawa, N.; Funahashi, A.; Iizuka, Satoru; Kasai, S.; Kumagai, Kohki; Maeno, Masaki; Nagashima, Takashi; Shiina, T.; Shoji, T.; Sugie, Toshiharu; Takeuchi, Hiroshi; Uehara, K.; Yamamoto, T.; Yamauchi, Toshihiko; Yoshida, H.

doi:10.1016/b978-1-4832-8373-9.50044-6

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“…These ions have been located close to the turning-point location in the two experiments which have attempted a radial scan, i.e. FT1 [10] and JFT2 [8,13]. Moreover, in the Wega stellarator [34], a fast-ion tail has also been observed in the tangential direction, i.e.…”

Section: Ion Heatingmentioning

confidence: 99%

“…With one exception [12], these experiments were intended to operate so as to preferentially heat the ion population. In general, they have been successful in showing that ion heating can reach values of up to 1 to 3 eV'kW" 1 (normalized to a plasma density of 10 13 cm" 3 ) and is optimal when the linear turning point is located near the plasma centre [13].…”

Section: Introductionmentioning

confidence: 99%

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Lower-hybrid-heating data on the Wega experiment revisited, using ion-stochastic-heating and electron-Landau-damping theories

et al. 1981

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Previously obtained data on the Wega tokamak by lower hybrid heating (f = 500 MHz; PHF = 130 kW) are re-visited in the light of recent theories on ion stochastic heating and quasi-linear electron Landau damping. It is possible, with the help of these theories, to correctly estimate the fast-ion mean energy, the HF power density coupled to the ions and that coupled to the electrons. The values of the parallel index of refraction, N‖, which are necessary to obtain a good quantitative agreement between experiment and theoretical estimates, are the same for ions and electrons, although higher than expected.

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Section: Ion Heatingmentioning

confidence: 99%