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Global tuning of hadronic interaction models with accelerator-based and astroparticle data
No full textGLAD-TPC Software
No full textThe GLAD-TPC (Time Projection Chamber) detector, also known as HYDRA, is part of the R3B (Reactions with Relativistic Radioactive Beams) experimental setup at the GSI/FAIR research center (Facility for Antiproton and Ion Research). The GLAD-TPC software allows for Monte Carlo simulations and experimental data analysis, enabling seamless integration with the data analysis workflows of other R3B detectors. This state-of-the-art tracking detector is crucial to the R3B research program, supporting detailed investigations into light hypernuclei and the production background of baryonic resonances. The GLAD-TPC software is a source distribution with recurring releases for macOS and Linux
SOFIA Software
No full textThe SOFIA software module, integrated into the R3BRoot framework, provides comprehensive tools for configuring and managing the SOFIA detector analysis, specifically designed for nuclear fission experiments performed with the GLAD superconducting spectrometer. Sofia-R3BRoot, built on the FairRoot framework, offers a robust software environment for conducting detailed Monte Carlo simulations and processing experimental data from R3B (Reactions with Relativistic Radioactive Beams) experiments. Key features include precise detector geometry modeling, particle tracking, event reconstruction, and physics analysis, all of which support the study of fission dynamics and nuclear structure in high-energy heavy-ion collision scenarios at the GSI-FAIR facility. The SOFIA software package is distributed as a source release, with regular updates available for macOS and Linux
Including medium effects and longer temporal scales in TRAX-CHEMxt
No full textObjective. Radiation biophysical modelling of the spatio-temporal events following energy deposition in a tissue-like medium is a useful tool for investigating mechanistic features of radiobiological processes. The present study focuses on the description of complex milieux and long time domains.Approach. Monte Carlo (MC) chemical track structure algorithms allow the formation, transport, and recombination of radical species under various irradiation conditions to be followed. This feature has been proposed to have outermost relevance, e.g. in the comprehension of the FLASH effect. Nevertheless, to extend the simulations predictability range in both temporal scales and realistic environments, while avoiding prohibitive running times, computationally lighter approaches have to be used in combination with the accurate step-by-step descriptions provided by MC. To this end, TRAX-CHEMxt has been implemented.Main results. We propose here an upgraded version of the code, capable now to investigate the chemical effects of radiation up to 1 s and in a more complex environment, featured not only by oxygenated water, but also by a representative biomolecule, RH, and an antioxidant component, XSH. The robustness of the code in this new configuration has been proven. Its predictions are compared with both full MC counterparts at the overlapping time scale, (1-10) µs, and available experimental data at longer temporal points, showing in all cases good agreements. The change in the chemical yields due to the presence of RH and XSH is then investigated, as a function of primary particle type, energy, LET, and target oxygenation.Significance. TRAX-CHEMxt can thus be effectively applied to study the impact of radiation-induced radicals at larger time scales on more complex systems, allowing for specific biological targets simulations
Quantum magic and multipartite entanglement in the structure of nuclei
No full textMotivated by the Gottesman-Knill theorem, we present a detailed study of the quantum complexity of -shell and -shell nuclei. Valence-space nuclear shell-model wave functions generated by the bigstick code are mapped to qubit registers using the Jordan-Wigner mapping (12 qubits for the shell and 24 qubits for the shell), from which measures of the many-body entanglement (-tangles) and magic (nonstabilizerness) are determined. While exact evaluations of these measures are possible for nuclei with a modest number of active nucleons, Monte Carlo simulations are required for the more complex nuclei. The broadly applicable Pauli-string ̂ ˆ exact (PSIZe) Markov chain Monte Carlo (MCMC) technique is introduced to accelerate the evaluation of measures of magic in deformed nuclei (with hierarchical wave functions), by factors of ≈8 for some nuclei. Significant multinucleon entanglement is found in the shell, dominated by proton-neutron configurations, along with significant measures of magic. This is evident not only for the deformed states, but also for nuclei on the path to instability via regions of shape coexistence and level inversion. These results indicate that quantum-computing resources will accelerate precision simulations of such nuclei and beyond
