Modification on Thermal Motion in Geant4 for Neutron Capture Simulation in Gadolinium Loaded Water
Abstract Neutron tagging is a fundamental technique for electron anti-neutrino detection via the inverse beta decay channel. A reported discrepancy in neutron detection efficiency between observational data and simulation predictions prompted an investigation into neutron capture modeling in Geant4. The study revealed that an overestimation of the thermal motion of hydrogen atoms in Geant4 impacts the fraction of captured nuclei. By manually modifying the Geant4 implementation, the simulation results align with calculations based on evaluated nuclear data and show good agreement with observables derived from the SK-Gd data.
Authors
- F Nakanishi (ORCID: https://orcid.org/0000-0003-4408-6929)
- Ryoichi Asaka (ORCID: https://orcid.org/0000-0003-4450-5142)
- H. Sekiya (ORCID: https://orcid.org/0000-0001-9034-0436)
- Y. Kanemura
- Y. Koshio (ORCID: https://orcid.org/0000-0003-0437-8505)
- S. Izumiyama (ORCID: https://orcid.org/0000-0002-0808-8022)
- Hiroshi Itô (ORCID: https://orcid.org/0000-0003-1029-5730)
- Masayuki Harada (ORCID: https://orcid.org/0000-0003-3273-946X)
- S. Han (ORCID: https://orcid.org/0009-0002-8908-6922)
- K. Abe (ORCID: https://orcid.org/0009-0000-9620-788X)
- M. Ishitsuka
- T Yano
- Y. Hino
Institutions
- Tokyo Institute of Technology (JP)
- Tokyo University of Science (JP)
- Okayama University (JP)
- Kavli Institute for the Physics and Mathematics of the Universe (JP)
- Institute for Cosmic Ray Research (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- Progress of Theoretical and Experimental Physics
- Published
- 2024-12-26
- DOI
- https://doi.org/10.1093/ptep/ptae193
- Citations
- 2
- Primary Topic
- Nuclear Physics and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.22
Funders
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science