The utilization of MCNPX 2.4 por ADS target calculation
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2006
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INTERNATIONAL NUCLEUS NUCLEUS CONFERENCE
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The Accelerator Driven System (ADS), is an innovative reactor which is being developed as a
dedicated burner in a Double Strata Fuel Cycle to incinerate nuclear waste [1]. The ADS consist
of a sub-critical assembly driven by accelerator delivering a proton beam on a target to produce
neutrons by a spallation reaction. The spallation module constitutes the physical and functional
interface between the accelerator and the sub-critical reactor. For this reason it is probably the most
innovative component of the ADS. The target design is a key issue to investigate in designing ADS
and its performances are characterized by the number of neutrons emitted per incident proton, the
mean energy deposited in the target for neutron produced, the neutron spectrum and the spallation
product distribution. To design an ADS target it is necessary to use models for the spallation
reaction, such as Bertini, Cugnon, Isabel, etc. and the transport of the secondary particles through
the target. The MCNP-X [2] (Monte Carlo N-particle Transport Code System for Multi particle and
High Energy Application), developed by Los Alamos National Laboratory, is internationally one
of the most used code to realize this type of calculation. This paper intends to make a sensitivity
analysis of the models existing in MCNPX (BERTINI, ISABEL and CEM) in reproducing results
for a cylindrical target of lead (thick target), in order to compare the differences among the models.
Also, for thin targets, several experimental results are available from Titarenko[3], mainly for the
yield of residual products, and in this paper we will utilize the MCNPX to reproduce some of these
experimental data.
Como referenciar
ROSSI, P.C.R.; MAIORINO, J.R. The utilization of MCNPX 2.4 por ADS target calculation. In: INTERNATIONAL NUCLEUS NUCLEUS CONFERENCE, August 28 - September 1, 2006, Rio de Janeiro, RJ. Abstract... Disponível em: http://repositorio.ipen.br/handle/123456789/19651. Acesso em: 20 Mar 2026.
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