Tacca, Marcos S. (2014) Diseño conceptual del núcleo de un reactor ADS (Acelerator-driven system). / Conceptual design of the core of an ADS (Accelerator-Driven System). Proyecto Integrador Ingeniería Nuclear, Universidad Nacional de Cuyo, Instituto Balseiro.
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Resumen en español
ADS son las siglas de Accelerator Driven System, es decir "sistema accionado por acelerador". El concepto básico detrás de estos reactores es utilizar una fuente de neutrones externa acoplada a un núcleo subcrítico. Los neutrones son provistos en general a través de reacciones inducidas por un haz de partículas aceleradas. En el presente trabajo se realiza un análisis de estos sistemas, se estudia su modelado y se propone un diseño de un reactor de este tipo. Durante la mayor parte del trabajo se utilizó la línea de cálculo determinística CONDOR-CITVAP, desarrollada por el Departamento de Ingeniería Nuclear de INVAP. La misma fue sometida a una validación básica debido a las características de los sistemas a modelar. La validación se llevó a cabo mediante el modelado de dos reactores, comparando los cálculos realizados con los de otros autores. Como criterio de diseño se propuso un reactor térmico de baja potencia. Se planteó su uso para el estudio de la física de neutrones de este tipo de sistemas, o como fuente de neutrones para distintas aplicaciones menores, en función de la fuente utilizada. Para el estudio se utilizó como base el reactor RA-6, partiendo de un modelo del mismo realizado en un trabajo anterior. Se estudiaron diferentes configuraciones, evaluando el desempeño de dos tipos de fuentes: generadores de neutrones y fuente de fotoneutrones. Se observó que el factor más importante que determina el tipo de fuente utilizada es la intensidad de neutrones que puede entregar. Se realizaron cálculos con un código Monte Carlo, que mostraron una correspondencia aceptable entre la línea determinística y el código probabilístico. Se realizó además un breve análisis de la cinética del sistema, para evaluar la posibilidad de la obtención de un fujo pulsado con la fuente de fotoneutrones.
Resumen en inglés
ADS is the acronym for Accelerator Driven System. The basic concept behind this type of reactor is to use an external neutron source coupled to a subcritical core. Neutrons are provided generally by a reaction induced by a beam of accelerated particles. In the present work an analysis of these systems is performed, their modeling is studied and a design for an ADS is proposed. The calculation method used during most of the work involved the deterministic codes CONDOR and CITVAP, developed by the Department of Nuclear Engineering of INVAP. It became necessary to perform a basic validation of these calculation codes, due to the characteristics of the modeled systems. The validation was carried out by modeling two reactors and comparing the calculations with those of other authors. The proposed aim of the design was a low power, thermal reactor. Such reactor was intended to be used for the study of the neutron physics of these systems, or as a neutron source for various minor applications, depending to the source used. As a basis for the study, the RA-6 reactor was used, based on a model previously performed in another work. Different configurations were studied, evaluating the performance of two kinds of sources: neutron generators and photoneutron source. It was observed that the most important factor that defines the suitable source to use is the neutrons intensity that such source can provide. Calculations with a Monte Carlo code were performed, which showed an acceptable correlation between deterministic and probabilistic codes. A brief analysis of the system's kinetics was also performed in order to assess the possibility of obtaining a pulsed flux with the photoneutron sources.
| Tipo de objeto: | Tesis (Proyecto Integrador Ingeniería Nuclear) |
|---|---|
| Información Adicional: | Materia específica: Neutrónica |
| Palabras Clave: | Neutron sources; Fuentes de neutrones; Design; Diseño; [Accelerator driven system; ADS; Subcritical reactor; Reactor subcrítico] |
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| Materias: | Ingeniería nuclear > Ingeniería de reactores |
| Divisiones: | INVAP |
| Código ID: | 466 |
| Depositado Por: | Marisa G. Velazco Aldao |
| Depositado En: | 06 Oct 2014 11:07 |
| Última Modificación: | 15 Oct 2014 10:37 |
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