Plasma Scenario Study for HT-6M Tokamak Using BALDUR Integrated Predictive Modeling Code

Abstract

This study investigates the plasma performance in HT-6M tokamak using 1.5D integrated predictive modeling code BALDUR. The simulations are carried out under the designed plasma conditions, including R = 65 cm, a = 20 cm, B_T = 1.5 T, n_e = 1 × 10¹⁹ m⁻³ and I_p = 40 - 150 kA without external heating. In these simulations, a combination of turbulence and neoclassical transports is used for predicting thermal and particle transport. Thus, the plasma evolution for plasma current, temperature, and density can be predicted under a designed condition. In addition, the influence of current rampup for the plasma performanceis investigated. The scenario study for the tokamak is also carried out by varying plasma current. To summarize the results yield the electron temperature at the center T_e(0) = 477 - 1,551 eV (MMM95) and 328 - 1,384 eV (Mixed B/gB), the ion temperature at the center T_i(0) = 26 - 50 eV (MMM95) and 18 - 42 eV (Mixed B/gB) the electron densit y = 6.4 × 10¹⁸ - 1.4 × 10¹⁹ m⁻³ in both Mixed B/gB and MMM95 simulations. Using the obtained plasma parameters, the radiated power of the carbon impurity is assessed.