YOUNIS Jawad, and WPI

HT-7

Proposal for HT-7 Experiment

Study of LHW current drive efficiency and

volume averaged electron temperature

HT-7

The current drive efficiency is one of the most important parameter in non-inductive current drive. The electron temperature dependence of CD efficiency has been suggested by comparing many experimental results in small and medium size machines [1]. Experimental Results have shown that the CD efficiency increases with electron temperature [2]. In 1989 the empirical scaling of the CD efficiency has been found in JT-60 experiments [3] Current drive efficiency ~12<Te>/5+Zeff, where <Te> is the volume averaged electron temperature and Zeff is the effective ion charge

[1] M.Porkolab, IEEE Transactions on Plasma Sciences,PS-12 (1984)107[2] V.V. Alikaeov , et al11th intl. Conf. On Plasma Phys. and controlled Nuclear Fusion Research,Kyoto,1986,Vol.1, 533.[3] K.Ushigusa, T. Imai,Y. Ikeda et al., Nuclear Fusion , 29 ( 1989) 1052.

K.Ushigusa et al.,JAERI Report No. 1339 and references

HT-7

Plasma parameters,

PLH = 100 KW up to maximum available ,Δ = 0

Ip= 80 kA ne= 0.7, Ip= 140 kA ne= 0.7, Ip= 140 kA ne= 1.5,

HT-7

Diagnostics required,

Density, Te ( SXR)

HT-7

We will make use Lower Hybrid Simulation Code (LSC ) to analyze our data numerically, and we try to compare the experimental results with numerical results

谢谢