@article{MTMT:31598114, title = {Population-based variance reduction for dynamic Monte Carlo}, url = {https://m2.mtmt.hu/api/publication/31598114}, author = {Légrády, Dávid and Halász, Máté Gergely and Kópházi, József and Molnár, Balázs and Tolnai, Gábor}, doi = {10.1016/j.anucene.2020.107752}, journal-iso = {ANN NUCL ENERGY}, journal = {ANNALS OF NUCLEAR ENERGY}, volume = {149}, unique-id = {31598114}, issn = {0306-4549}, year = {2020}, eissn = {1873-2100}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176} } @article{MTMT:31208562, title = {Simulation of a research reactor reactivity transient with deterministic and GPU-assisted Monte Carlo reactor kinetics codes}, url = {https://m2.mtmt.hu/api/publication/31208562}, author = {Böröczki, Zoltán István and Klujber, Gergely and Tolnai, Gábor and Molnár, Balázs and Légrády, Dávid and Gabrielli, F. and Rineiski, A. and Szieberth, Máté}, doi = {10.1140/epjp/s13360-020-00280-4}, journal-iso = {EUR PHYS J PLUS}, journal = {EUROPEAN PHYSICAL JOURNAL PLUS}, volume = {135}, unique-id = {31208562}, issn = {2190-5444}, abstract = {Reactor kinetic codes are crucial in safety assessment. Validating spatial and high temporal resolution kinetic solvers without thermal feedback is problematic as measurements seldom involve detailed spatial and fine temporal resolution. Benchmarking of deterministic codes thus often resorts to code-to-code comparison against Monte Carlo codes, which can only recently treat direct time dependence. In this paper, we have attempted to compare results from the GUARDYAN directly time-dependent Monte Carlo code and the SEnTRi transient driver developed for the PARTISN deterministic transport code to low power transient measured at the BME Training Reactor. Code-to-measurement comparisons were successful, despite a major uncertainty in the actual timing of the reactivity insertion and withdrawal originating from the instrumentation of the pneumatic rabbit system. Code-to-code comparisons concluded that time dependence was correctly implemented in both GUARDYAN and SEnTRi; furthermore, a hypothetical scenario was set up involving an instantaneous insertion of a negative reactivity into the BME TR core in order to compare spatially and temporally dependent fluxes. The simulations demonstrated the appearance of higher-order modes, and results showed a relatively good match, although fidelity of the comparison could be further improved by reducing the statistical uncertainty of the results provided by GUARDYAN.}, year = {2020}, pages = {281}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176; Szieberth, Máté/0000-0001-9192-0352} } @article{MTMT:31320567, title = {A GUARDYAN GPU alapú reaktorkinetikai Monte Carlo-kód}, url = {https://m2.mtmt.hu/api/publication/31320567}, author = {Molnár, Balázs and Tolnai, Gábor and Tóth, Boglárka and Légrády, Dávid and Horváth, András}, journal-iso = {NUKLEON}, journal = {NUKLEON}, volume = {12}, unique-id = {31320567}, issn = {1789-9613}, year = {2019}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176} } @article{MTMT:30738309, title = {A GPU-based direct Monte Carlo simulation of time dependence in nuclear reactors}, url = {https://m2.mtmt.hu/api/publication/30738309}, author = {Molnár, Balázs and Tolnai, Gábor and Légrády, Dávid}, doi = {10.1016/j.anucene.2019.03.024}, journal-iso = {ANN NUCL ENERGY}, journal = {ANNALS OF NUCLEAR ENERGY}, volume = {132}, unique-id = {30738309}, issn = {0306-4549}, year = {2019}, eissn = {1873-2100}, pages = {46-63}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176} } @CONFERENCE{MTMT:31324372, title = {VECTORIZED MONTE CARLO FOR GUARDYAN - A GPUACCELERATED REACTOR DYNAMICS CODE}, url = {https://m2.mtmt.hu/api/publication/31324372}, author = {Molnár, Balázs and Tolnai, Gábor and Légrády, Dávid and Szieberth, Máté}, booktitle = {Proceedings of the PHYSOR 2018}, unique-id = {31324372}, year = {2018}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176; Szieberth, Máté/0000-0001-9192-0352} } @CONFERENCE{MTMT:31324346, title = {VERIFICATION OF THE INTERACTION PHYSICS OF GUARDYAN A NOVEL GPU-BASED MONTE CARLO CODE FOR SHORT TIME SCALE REACTOR TRANSIENTS}, url = {https://m2.mtmt.hu/api/publication/31324346}, author = {Légrády, Dávid and A., Claret and Molnár, Balázs and Tolna, G.}, booktitle = {Proceedings of the PHYSOR 2018}, unique-id = {31324346}, year = {2018}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176} } @article{MTMT:3365767, title = {Variance reduction and optimization strategies in a biased woodcock particle tracking framework}, url = {https://m2.mtmt.hu/api/publication/3365767}, author = {Molnár, Balázs and Tolnai, Gábor and Légrády, Dávid}, doi = {10.1080/00295639.2017.1413876}, journal-iso = {NUCL SCI ENG}, journal = {NUCLEAR SCIENCE AND ENGINEERING}, volume = {190}, unique-id = {3365767}, issn = {0029-5639}, year = {2018}, eissn = {1943-748X}, pages = {56-72}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176} } @inproceedings{MTMT:3384646, title = {Variance analysis of Woodcock type tracking}, url = {https://m2.mtmt.hu/api/publication/3384646}, author = {Molnár, Balázs and David, Legrady}, booktitle = {International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2017)}, unique-id = {3384646}, year = {2017}, pages = {1}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176} } @article{MTMT:3180843, title = {Unbiased Light Transport Estimators for Inhomogeneous Participating Media}, url = {https://m2.mtmt.hu/api/publication/3180843}, author = {Szirmay-Kalos, László and Iliyan, Georgiev and Magdics, Milán and Molnár, Balázs and Légrády, Dávid}, doi = {10.1111/cgf.13102}, journal-iso = {COMPUT GRAPH FORUM}, journal = {COMPUTER GRAPHICS FORUM}, volume = {36}, unique-id = {3180843}, issn = {0167-7055}, year = {2017}, eissn = {1467-8659}, pages = {9-19}, orcid-numbers = {Szirmay-Kalos, László/0000-0002-8523-2315; Magdics, Milán/0000-0003-4298-1022; Molnár, Balázs/0000-0003-0029-3176} } @article{MTMT:3159723, title = {Woodcock tracking with arbitrary sampling cross section using negative weights}, url = {https://m2.mtmt.hu/api/publication/3159723}, author = {Légrády, Dávid and Molnár, Balázs and Klausz, Milán and Major, Tibor}, doi = {10.1016/j.anucene.2016.12.003}, journal-iso = {ANN NUCL ENERGY}, journal = {ANNALS OF NUCLEAR ENERGY}, volume = {102}, unique-id = {3159723}, issn = {0306-4549}, year = {2017}, eissn = {1873-2100}, pages = {116-123}, orcid-numbers = {Molnár, Balázs/0000-0003-0029-3176; Major, Tibor/0000-0002-4672-6910} }