Accelerator Driven Reactor Systems

Accelerator Driven Systems (ADS)146 BARC HIGHLIGHTS Reactor Technology & Driven Reactor SYSTEMSThe Accelerator Driven system (ADS) is a new type of reactorwhich produces power even though it remains sub-criticalthroughout its life. All operating reactors in the world are critical reactors - which means that the number of neutronsproduced by fission is exactly balanced by the number lost byleakage and absorption by various materials in the balance is responsible for maintaining a constant reactorpower at any desired level. Sub-critical reactors produce fewerneutrons by fission than are lost by absorption and leakage, andrequire an external supply of neutrons to maintain a constantreactor power. This external neutron supply comes from theinteraction of a high energy proton beam with a heavy atomnucleus such as lead through what is known in nuclear physics asspallation. The power level in an ADS is greater for strongerexternal sources and for reactors which are closer to critical.

Accelerator Driven Systems (ADS) 146 BARC HIGHLIGHTS Reactor Technology & Engineering 8.1 ACCELERATOR DRIVEN REACTOR SYSTEMS The Accelerator Driven System (ADS) is a new type of reactor

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