Design calculations of the thermal-spectrum accelerator-driven system for LWR waste destruction

A number of nuclear physics design issues concerning Accelerator Driven Molten-Salt Reactor based on the so called ATW concept proposed by Los Alamos are discussed. General description of concept using internal moderation with graphite block is presented. Burn-up, salt processing and safety criteria (reactivity temperature coefficients and kinetics parameters) are presented for different spectra (graphite to salt ratio) and an optimal variant of the blanket with non-positive temperature reactivity coefficient is provided and results are discussed