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Showing 1 to 9 of 9 for “"PHITS"”.
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Výpočetní analýza neutronových polí generovaných pokročilými spalačními terči
… přičemž je pomocí výpočetních kódů TALYS, MCNP a PHITS studován vliv materiálového složení terče na energetické spektrum výsledného neutronového pole. Získané poznatky jsou na závěr vyhodnoceny a je navržen další výzkum této problematiky.
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SIMULATIONS OF SPACE RADIATION INTERACTIONS WITH MATERIALS, WITH APPLICATION TO DOSE ESTIMATES FOR LUNAR SHELTER AND ABOARD THE INTERNATIONAL SPACE STATION
… interactions are simulated using MCNPX and PHITS probabilistic codes. The energy loss and energy deposition within the shielding materials and in a phantom are calculated. The contributions of secondary particles produced by spallation reactions are identified. Recent experimental …
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Target Design and Optimizations for Spent Fuel Transmutation
… to enhance the transmutation efficiency. PHITS, a Monte Carlo transport code, is employed to computationally model the interactions between LLFP materials and the proton beam. In this thesis, PHITS is used to estimate the flux-energy spectrum and the number of atoms irradiated in the LLFP …
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Non-Neutron Transmutation of Spent Fuel
… Several computational methods, TALYS, TASMAN, PHITS, and FISPACT, are utilized to model the complete transport and transmutation process for proton irradiation to explore the potential of converting LLFP isotopes into stable or shorter-lived forms. TALYS is used to generate proton …
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Evaluation of fast neutron shielding effectiveness in light-element compounds
… at 106 n/s intensity along with MCNPX and PHITS code simulations. The transmission factor in different experiments was found to vary from 11% up to 34% with increasing thickness. Simulation results were in reasonable agreement with experimental data and supported the conclusion that …
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Theoretical performance analysis of a novel hemispherical tissue equivalent proportional counter for neutron monitoring and dosimetry
… were conducted using the Monte Carlo code PHITS (V. 2.24) with both mono-energetic 2.5 MeV neutrons and the neutron spectrum of 252Cf-D2O moderated. In these neutron fields the hemispherical counter appears to be a good alternative to the reference spherical geometry, whereas the …
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Examination of secondary electrons generated by encapsulated gamma sources to improve contact dosimetry estimates
… Monte Carlo radiation transport code PHITS (Particle and Heavy Ion Transport code System), to calculate the contact dose rate conversion factors for all of the encapsulated gamma sources presented in NCRP-40, taking into account the dose from both gamma rays and secondary electrons. …
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Design and characterization of next-generation tissue equivalent proportional counters for use in low energy neutron fields
… Particle and Heavy Ion Transport Code System (PHITS) three-dimensional radiation transport code. For these fields, it is found that the two instruments do offer the same or better sensitivity and dose equivalent response than the standard counter design. The process of designing the optimized …
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Polyethylene-Based Multifunctional Composite Material for Radiation Shielding, Passive Thermoregulation, and In-Situ Fabrication for Space Exploration
… via a Monte Carlo particle transport tool PHITS and confirmed by EQ-SANS measurements. The second component of the thesis addresses the feasibility of additive in-situ fabrication via fused deposition modeling (FDM). Due to the difficulties of FDM printing polyethylene, the development of …