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Simulation of spallation and transmutation minor actinides in fast subcritical reactor

Simulation of spallation and transmutation minor actinides in fast subcritical reactor. J OINT I NSTITUTE FOR N UCLEAR R ESEARCH. apprentice: Przemysław Stanisław Stanisz supervisor: Aleksander Polański (LIT). DUBNA 29.07.2011. Models and Codes Used for Simulations.

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Simulation of spallation and transmutation minor actinides in fast subcritical reactor

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  1. Simulation of spallation and transmutation minor actinides in fast subcritical reactor JOINTINSTITUTE FORNUCLEAR RESEARCH apprentice: Przemysław Stanisław Stanisz supervisor: Aleksander Polański (LIT) DUBNA 29.07.2011

  2. Models and Codes Used for Simulations MCNP (Monte Carlo N-Particle code) is developed by Los Alamos National Lab (LANL) to simulate the transport of neutrons, gamma rays and electrons by the Monte Carlo method. It simulates a coupled transport, i.e., it also accounts for transport of secondary particle resulting the interaction of primary particles. MCNPX (Monte Carlo N-Particle eXtended) extends the capacilties of MCNP to other particles (e.g. charged particles, heavy ions, pions etc.) CINDER90 code and library to developed for the description of nuclide inventories produced in a wide range of radiation environments

  3. The Spallation Proces Fast Direct Process: - Intra-Nuclear Cascade (nucleon-nucleon collisions) Compound Nuclei: - Evaporation (mostly neutrons) - High-Energy Fissions

  4. Spallation Neutron Yield Spallation Neutron Yield (mean multiplicity of emitted neutrons) The number of emitted neutrons varies as a function of the target nuclei and the energy of the incident particle L. Pienkowski, F. Goldenbaum, D. Hilscher, U. Jahnke Neutron multiplicity distributions for 1.94 to 5 GeV/c proton-, antiproton-, pion-, kaon-, and deuteron-induced spallation reactions on thin and thick targets

  5. Spallation Neutron Spectrum The spectrum of spallation neutrons evaporated from an excited heavy nucleus bombarded by high energy particles is similar to the fission neutron spectrum but shifts a little to higher energy

  6. Spallation Product Distribution The spallation product distribution varies as a function of the target material and incident proton energy. It has a very characteristic shape:

  7. ADS geometry model

  8. FAST Reactor geometry model

  9. Reactivity change in burnup cycle

  10. ADS and Fast Reactor Neutron Spectra

  11. Mass evolution of Plutonium

  12. Mass evolution of Minor Actinide (MA)

  13. Thank you for attention

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