Conception of a neutron activation simulation tool for industrial usage based on the 3D Monte-Carlo calculation capabilities of the RayXpertR software
Description
In nuclear facilities, neutrons can easily generate radioactive isotopes that decay and emit ionizing particles. These particles can be at the origin of irradiation of biological tissues or of malfunction of electronic components. In order to simulate neutron activation, it is necessary to reproduce the processes that produce the ionizing particles. The neutron distribution in the simulated geometry is then calculated. This is then used to predict the radioactive isotopes generated. Then, the particles from the radioactive decays are transported in the model to establish their distribution. Important numerical resources are thus required to simulate neutron activation. The objective of this thesis is to reduce the necessary numerical et temporal resources as much as possible by improving the accuracy of the calculation and automating the process in order to make it usable in an industrial context. (author)
Abstract (French)
Dans les installations nucleaires, les neutrons peuvent librement generer des isotopes radioactifs qui se desintegrent et emettent des particules ionisantes. Ces particules peuvent provoquer des lesions dans les tissus biologiques ou entrainer le dysfonctionnement de composants electroniques. Afin de simuler l'activation neutronique, il est necessaire de reproduire les processus a l'origine des particules ionisantes. La distribution des neutrons dans la geometrie simulee est alors calculee. Celle-ci est ensuite utilisee afin de predire les isotopes radioactifs produits. Puis, les particules issues des decroissances radioactives sont transportees dans le modele afin d'etablir leur distribution. Des ressources numeriques importantes sont ainsi necessaires afin de simuler l'activation neutronique. L'objectif de cette these est alors de reduire au maximum les ressources necessaires en ameliorant la precision du calcul et automatisant le procede afin de le rendre utilisable dans un contexte industriel. (auteur)
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Additional details
Additional titles
- Original title (French)
- Conception d'un outil de simulation d'activation neutronique a vocation industrielle base sur les capacites de calcul Monte-Carlo 3D du logiciel RayXpertR
Publishing Information
- Imprint Pagination
- 207 p.
- Report number
- FRNC-TH--14780
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 54095994
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S97: MATHEMATICAL METHODS AND COMPUTING;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- ALGORITHMS; AMBIENT DOSE EQUIVALENTS; AUTOMATION; BOLTZMANN EQUATION; COMPUTER-AIDED DESIGN; COMPUTERIZED SIMULATION; CROSS SECTIONS; DECAY; FISSION; ISOTOPES; ITER TOKAMAK; MEMORY MANAGEMENT; MESH GENERATION; MONTE CARLO METHOD; NEUTRON FLUX; PARALLEL PROCESSING; PHOTON TRANSPORT; R CODES
- Descriptors DEC
- CALCULATION METHODS; CLOSED PLASMA DEVICES; COMPUTER CODES; DATA PROCESSING; DESIGN; DIFFERENTIAL EQUATIONS; DOSE EQUIVALENTS; EQUATIONS; INTEGRO-DIFFERENTIAL EQUATIONS; KINETIC EQUATIONS; MATHEMATICAL LOGIC; NEUTRAL-PARTICLE TRANSPORT; NUCLEAR REACTIONS; PARTIAL DIFFERENTIAL EQUATIONS; PROCESSING; PROGRAMMING; RADIATION FLUX; RADIATION TRANSPORT; SIMULATION; THERMONUCLEAR DEVICES; THERMONUCLEAR REACTORS; TOKAMAK DEVICES; TOKAMAK TYPE REACTORS
Optional Information
- Notes
- [140 refs.]; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses