Speaker
Description
The paper presents the ICR-heating system of the TSP TRINITI complex: purpose; features of implementation; characteristics; power supply system; physical condition; and also discusses the possibility of upgrading the system of ICR-heating of the TSP TRINITI complex for the Ignitor project.
According to the project of tokamak Ignitor to accelerate the plasma ignition and facilitate the access to high confinement regimes such as the H and I regimes need a system of ICR-heating of the 8 generators with frequencies of 80÷115 MHz (115 MHz: Bt=13T, Ip=11MA full performance scenario; and 80 MHz: Bt=9T, Ip=6-7MA reduced performance scenario), the maximum power of the generator 2 MW at 80 MHz and 1 MW at 115 MHz, the pulse duration to 4s [1].
The RF system was created for ICR-heating of the plasma of the TSP TRINITI at the power level of 2 MW with a frequency <30 MHz in the pre-compression stage of the discharge (Bt=2T, ne=0,5×10^20m-3, τRF=0,1s) to improve the efficiency of adiabatic compression of the plasma. The mechanism of absorption of fast waves at cyclotron frequency of small additive of ions ++He3 was used as the main method of heating D or D-T plasma of the TSP TRINITI. The RF system (2 MW, 20 MHz) was successfully tested at the TSP TRINITI [2].
Technical proposals are being developed to upgrade both the RF system and the power supply of the TSP TRINITI complex in accordance with the current requirements of the tokamak Ignitor project.
References
1. B. Coppi, A. Airoldi, R. Albanese et al., Nucl. Fusion 55 (2015) 053011.
2. Mimov S.V., Коvаn I.A., Azizov Е.А. et al., Proc. 16tn International Conference оn Fusion Energy, Montreal, 1996, IAEA, v.1, р.763, Vienna, 1997.
