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Development and benchmark calculations of Monte Carlo transport program MATS for R&D of accelerator-driven system
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DOI：10.1007/s41365-026-02018-w.png)
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Abstract
En 中文
Accelerator-driven system (ADS) is widely regarded as the most effective transmutation solution for nuclear waste. The Monte Carlo transport simulation of full-energy-range particles involved in both the spallation target and subcritical blanket forms the foundation of ADS simulation studies. Based on the Monte Carlo simulation programs OpenMC and GMT, a program named MATS was developed, which integrates reactor physics analysis and high-energy particle simulation capabilities for studying the ADS target-reactor system. The physical calculation functions of the program rely on an electromagnetic interaction module, a hadronic interaction module, a high-energy cross-section module, traditional reactor-oriented calculation functions, and nuclear data library. This equips MATS with the capability to simulate the transport processes of particles in a wide-energy range, which is essential for the R&D of ADS because there will be an underestimation of neutron fluence and heat density at the level of more than 10% when neutrons above 20 MeV cannot be transported. Benchmark calculations show that MATS can be used to perform ADS physical studies with reasonable deviations, which are dominated by the spallation models. The development background of the program, transport framework and functional modules, details of the benchmark calculations, and further development plans are introduced.
Keywords:
Accelerator-driven system
Monte Carlo simulation
Code development
Benchmark calculations
Spallation reaction
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