VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV)
Sensitivity analysis studies the effect of a change in a given parameter to a response function of the system under investigation. In reactor physics, this usually translates into the study of how cross sections and fission spectrum modifications affect the value of the multiplication factor, the de...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | EPJ Web of Conferences |
| Subjects: | |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_15005.pdf |
| _version_ | 1818956022453108736 |
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| author | Portinari D. Cammi A. Lorenzi S. Aufiero M. Calzavara Y. Bidaud A. |
| author_facet | Portinari D. Cammi A. Lorenzi S. Aufiero M. Calzavara Y. Bidaud A. |
| author_sort | Portinari D. |
| collection | DOAJ |
| description | Sensitivity analysis studies the effect of a change in a given parameter to a response function of the system under investigation. In reactor physics, this usually translates into the study of how cross sections and fission spectrum modifications affect the value of the multiplication factor, the delayed neutron fraction or the void coefficient for example. Generalized Perturbation Theory provides a useful tool for the assessment of adjoint weighed functions such as keff and void coefficient sensitivities. In this work, the capability of SERPENT code to perform sensitivity calculation based on GPT is used to study the TRIGA Mark II research reactor installed at L.E.N.A. of University of Pavia. A general sensitivity analysis to the most important reactor’s cross sections has been performed in order to highlight the biggest reactivity contributions. Two numerically challenging tasks related to GPT calculation have been performed thanks to the relatively quick Monte Carlo approach allowed by this reactor: investigating the linearity of the reactivity injection caused by the flooding of the central channel, and calculating the fuel void coefficient sensitivity to the coolant density. |
| first_indexed | 2024-12-20T10:47:21Z |
| format | Article |
| id | doaj.art-48ff26f3b7a347de8d47755b401bb8cc |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-20T10:47:21Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-48ff26f3b7a347de8d47755b401bb8cc2022-12-21T19:43:22ZengEDP SciencesEPJ Web of Conferences2100-014X2021-01-012471500510.1051/epjconf/202124715005epjconf_physor2020_15005VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV)Portinari D.Cammi A.0Lorenzi S.1Aufiero M.2Calzavara Y.3Bidaud A.4Politecnico di Milano; Dept. of Energy, Nuclear Eng. DivisionPolitecnico di Milano; Dept. of Energy, Nuclear Eng. DivisionMilano Multiphysics; Polihub, Politecnico di MilanoInstitut Laue Langevin; 71 Rue des MartyrsLPSC-IN2P3-CNRS; 53 Rue des MartyrsSensitivity analysis studies the effect of a change in a given parameter to a response function of the system under investigation. In reactor physics, this usually translates into the study of how cross sections and fission spectrum modifications affect the value of the multiplication factor, the delayed neutron fraction or the void coefficient for example. Generalized Perturbation Theory provides a useful tool for the assessment of adjoint weighed functions such as keff and void coefficient sensitivities. In this work, the capability of SERPENT code to perform sensitivity calculation based on GPT is used to study the TRIGA Mark II research reactor installed at L.E.N.A. of University of Pavia. A general sensitivity analysis to the most important reactor’s cross sections has been performed in order to highlight the biggest reactivity contributions. Two numerically challenging tasks related to GPT calculation have been performed thanks to the relatively quick Monte Carlo approach allowed by this reactor: investigating the linearity of the reactivity injection caused by the flooding of the central channel, and calculating the fuel void coefficient sensitivity to the coolant density.https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_15005.pdfsensitivityperturbation theorymontecarlotriga |
| spellingShingle | Portinari D. Cammi A. Lorenzi S. Aufiero M. Calzavara Y. Bidaud A. VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV) EPJ Web of Conferences sensitivity perturbation theory montecarlo triga |
| title | VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV) |
| title_full | VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV) |
| title_fullStr | VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV) |
| title_full_unstemmed | VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV) |
| title_short | VOID COEFFICIENT SENSITIVITY ANALYSIS FOR THE TRIGA MARK II REACTOR AT L.E.N.A. (UNIPV) |
| title_sort | void coefficient sensitivity analysis for the triga mark ii reactor at l e n a unipv |
| topic | sensitivity perturbation theory montecarlo triga |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2021/01/epjconf_physor2020_15005.pdf |
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