| Autor: |
P. Schild, J. A. Romero, Y. Baranov, F. X. Söldner, A. Ekedahl, M. Goniche, B. Tubbing, B. Fischer, C. D. Challis, A. C. C. Sips, C. Gormezano, J.A. Dobbing |
| Rok vydání: |
1997 |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings. |
| Popis: |
Lower Hybrid Current Drive (LHCD) has been used for current profile shaping in the shear optimisation experiments in 1996/97 in JET. PLH≲3MW has been applied in the initial current ramp-up in order to control the internal inductance. An internal transport barrier with improved central electron confinement has been produced in this phase with LHCD alone. This has resulted in a peaking of the electron temperature profile and Te0 above 10keV at ne0⩽1.5×1019 m−3. The profile of the LH driven current, as determined by hard X-ray mesurements, is peaked at approximately mid-radius in these conditions. Good coupling of the LH waves has been obtained by the use of a near gas feed. This method reduces the risk of plasma-launcher interaction, since the launcher can be positioned in the shadow of the poloidal limiters. A reflection coefficient of 5% has been maintained at a plasma-launcher distance of 8 cm and PLH=5 MW has been coupled to divertor plasmas in L-mode with this method. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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