The International Thermonuclear Experimental Reactor (ITER) tokamak can generate fusion energy in an acceptable method. In this study, the particle and energy equations were developed for T(D,n)4He, D(D,n)3He, D(D,p)T, and 3He(D,p)4He fusion reactions and optimum conditions were determined to achieve the maximum gain using differing mixtures of fuel. Also, the particle and energy equations were solved using the zero-dimensional model, and the ITER90HP plasma parameters were calculated by the numerical methods. The possibility regarding the presence of impurities was ignored in all our calculations.
