Physical Scheme Study of 10 MW Accelerator Driven Sub-critical Reactor

The accelerator-driven sub-critical system (ADS) is recognized as the most wonderful installation to transmute nuclear wastes in future industry. A physical design of 10 MW ADS was studied. The physical design was established by using the method of combination of MCNPX and ORIGEN code systems based on the nuclear data library of ENDF6.8, which was modified with six different temperatures (300, 600, 900, 1 200, 1 500, and 1 800 K). The results of k_eff, power peak factor and proton current density varying with burnup time were given from the calculations. The β_eff , fuel Doppler and coolant void coefficients were got from the calculation results, and ADS safety features were analyzed. Moreover, transmutation capability of ADS was studied by using the results of the burnup calculation. The results show that during the 1 000 d burnup, the swing of k_eff and proton current density is relatively smaller. The burnup of the fuel is relatively shallow. The system remains sub-critical when hypothetical accident happens. The transmutation support rate of the system is about 8.