Lower hybrid current drive efficiency affected by effective charge number and electron temperature in HT-7 tokamak

yang jianhua; wu zhenwei; xu ping; xu qiang

Volume 22 Issue 09

Aug. 2010

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Article Navigation > High Power Laser and Particle Beams > 2010 > 22(09): 0-

yang jianhua, wu zhenwei, xu ping, et al. Lower hybrid current drive efficiency affected by effective charge number and electron temperature in HT-7 tokamak[J]. High Power Laser and Particle Beams, 2010, 22.

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yang jianhua, wu zhenwei, xu ping, et al. Lower hybrid current drive efficiency affected by effective charge number and electron temperature in HT-7 tokamak[J]. High Power Laser and Particle Beams, 2010, 22.

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Lower hybrid current drive efficiency affected by effective charge number and electron temperature in HT-7 tokamak

1.
Institute of Plasma Physics,Chinese Academy of Sciences,P.O.Box 1126,Hefei 230031,China

Publish Date: 2010-08-17

Abstract

Abstract

The lower hybrid current drive experiment has been performed on the HT-7 tokamak. The wave power varied from 100 kW to 700 kW with a frequency of 2.45 GHz. The relation between the power of lower hybrid wave and the average effective charge number and electron temperature was studied. It is shown that the current drive efficiency is proportional to the electron temperature, and inversely proportional to the effective charge number. The dynamic control of the impurity of plasma is a key to improve the current drive efficiency.
- tokamak,
- lower hybrid wave,
- current drive efficiency,
- effective charge number

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