The primary development phase for the proposed industrial sub-critical nuclear plant focuses on the empirical determination of the optimal proton energy level and beam intensity. While scientific benchmarks suggest a baseline of 150 MeV for efficient spallation neutron generation, the industrial operational optimum is defined by the intersection of neutron multiplication efficiency and the thermal-mechanical stress limits of the tungsten-lead interface. Beam intensity is capped by the reliable heat removal capacity of the liquid metal target and the structural integrity of the tungsten window under continuous bombardment. Research prioritizes finding the minimum energy threshold that maintains a viable neutron yield to minimize accelerator complexity.
The accelerator subsystem utilizes a 77 K liquid nitrogen cooled architecture employing high-temperature superconductors to prioritize continuous reliability and minimize maintenance intervals. The system operates at a reduced accelerating gradient of 6 MV/m, necessitating a total accelerator length of 25 meters to reach the 150 MeV energy target. The 25 meter accelerator arms utilize single-piece cryostat integration to minimize thermal transition joints and vacuum seals. Cryogenic distribution uses sub-cooled liquid nitrogen headers to eliminate two-phase flow instability. While this gradient increases radio frequency power losses in the cavity walls compared to 2 K helium systems, the simplified cryogenic infrastructure and the ability to recover nitrogen compressor heat into the plant secondary loop provide a superior industrial reliability profile. This de-rated approach allows for the use of modular rack-mounted solid-state power amplifiers that can be hot-swapped by automated ground vehicles to maintain operation during component failure.
The reactor core follows a modular design to manage extreme thermal fluxes and eliminate the risks associated with large-scale pressure vessels. Each core module consists of a 1.2 meter diameter cylindrical tungsten shell with a height of 0.65 meters. The internal structure utilizes additive-manufactured gyroid-structure tungsten lattices to maximize the thermal contact area while maintaining high permeability for the molten lead-bismuth eutectic. The fuel comprises Uranium-238 powder saturated with this liquid metal to ensure uniform heat transfer to the tungsten structure and the base plate. Heat removal is conducted exclusively through the bottom plate using forced convection of liquid metal to maintain a safe heat flux of 5 MW/m². Each module is limited to a thermal output of 5.65 MW, ensuring long-duration structural integrity.
Nuclear performance is driven by three independent beam generators per module, each delivering 38 kW of proton beam power. At a sub-critical multiplication factor of 0.98, the total 114 kW of incident beam power is amplified approximately 50 times to produce the required 5.65 MW of thermal energy. The modules are arranged in a hexagonal interleaved matrix. This nesting strategy allows the 25 meter accelerator arms of adjacent units to occupy the angular voids between neighbors, reducing the facility floor area by 70 percent and allowing for shared radiation shielding and centralized utility headers.
The proposed architecture enables the rapid development of sub-critical power generation by utilizing de-rated, high-reliability components that avoid the sensitivities of scientific-grade hardware. By treating the facility as an integrated matrix of standardized modules, the system achieves inherent safety, simplified waste management, and industrial-scale energy production. This design provides a clear path to energy sovereignty by utilizing fertile fuel stocks and a robust, low-maintenance accelerator-driven initiation.















