Abstract
Radiofrequency power up to 40 kW injected into the vacuum chamber of the CASTOR tokamak by a multijunction grill was used for plasma formation during the ramp-up phase of the toroidal magnetic field. When electron cyclotron resonance (ECR) appears inside the tokamak chamber for a given pumping frequency (f=1·25 GHz) a plasma with a density greater than 2×1018 m−3 and temperatureTine=10 ÷ 40 eV is produced. The plasma is sustained at some lower value of the density during the whole RF pulse. Simultaneously, a toroidal current up to 0·2 kA is generated. The energy confinement time is estimated to be about 30 μs during the ECR breakdown.
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It is a pleasure to acknowledge very useful discussions with Dr. R. Klíma.
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Nanobashvili, S., Ďatlov, J., Stöckel, J. et al. Plasma formation and sustainment by a multijunction grill on the CASTOR tokamak. Czech J Phys 37, 194–200 (1987). https://doi.org/10.1007/BF01597667
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DOI: https://doi.org/10.1007/BF01597667