- Idaho State University is set to launch the nation's first university-hosted advanced micro-reactor.
- The reactor uses a heat-pipe cooling system to deliver zero-carbon electricity and high-temperature heat.
- NuCube is partnering with Canadian Nuclear Laboratories on safety research to expand its validation database.
- The program will give students the chance to train directly on the new micro-reactor.
A US university is preparing to bring online a new type of nuclear reactor that replaces conventional mechanical coolant pumps with sealed heat pipes. Idaho State University is getting ready to activate the nation's first university-hosted advanced micro-reactor, positioning it as a real-world testbed for next-generation nuclear technology. Known as the Advanced Research and Testing Reactor, the machine is being developed in partnership with NuCube Energy, an advanced nuclear technology company based in Idaho Falls. The project will be sited at the university's Business and Research Park, the result of Idaho State University's selection under the US Department of Energy's Nuclear Reactor Innovation Center launch program.
A new heat-pipe cooling system
At the heart of NuCube's reactor design is its heat-pipe cooling system. Where most conventional nuclear reactors rely on mechanical pumps to circulate coolant through the core, this micro-reactor uses heat pipes to passively transfer thermal energy from the fuel core to the power-conversion system. Engineered to operate under extreme conditions, the reactor architecture can run at temperatures up to 1,652°F (900°C), delivering zero-carbon electricity and high-temperature heat. That thermal output is critical for heavy-industrial processes that are difficult to decarbonize using conventional electricity supplies.
To demonstrate the safety of the concept under real operating conditions, NuCube recently teamed up with Canadian Nuclear Laboratories on a dedicated research and development program. The two organizations are gathering experimental data and building computational models to predict how the heat pipes will behave at temperatures above 900°C. NuCube says the results will expand its validation database and support future safety reviews for commercial licensing. Because the system is factory-built and modular, it can be assembled before delivery, and hosting the operating unit at Idaho State University gives engineers and researchers direct physical access to evaluate the hardware in real time.
The university has already begun blending academic training with industry engineering. Idaho State University graduate student Sam Jeffries, who brings ten years of engineering experience, now serves as NuCube's lab manager and test engineer, putting components through their paces while finishing his degree. The university brings rare operational expertise to the program. It has run its own research reactor on campus since 1965, making it one of only 24 US universities with such a facility. It also offers the state's only undergraduate degree in nuclear engineering.
Training and future demand
On Wednesday, state officials and researchers gathered at the future construction site to mark the formal launch of the project. Todd Combs, deputy director at Idaho National Laboratory, noted that while generations of students have earned operator licenses on the 1965 reactor, hundreds more will now train directly on the new micro-reactor to meet the lab's growing workforce needs. NuCube chief executive Cristian Rabiti described the program as an effort to change how reactors are built and deployed.
Idaho Governor Brad Little, speaking at the meeting, said the state is focused on building the components, technologies and skilled workers needed for a broader nuclear renaissance. University president Robert Wagner closed by emphasizing that the program supports Idaho State University's long-standing commitments as it marks its 125th anniversary.
Nuclear innovation and talent development at Idaho State University
Idaho State University's advanced micro-reactor program represents more than technological innovation; it also reflects a commitment to nuclear education. Through its partnership with NuCube, the university is not only advancing nuclear technology but also giving students hands-on experience to meet growing industry demand. This combination of academic and practical training is essential to developing the next generation of nuclear professionals, particularly as global demand for renewable energy continues to rise.