Fusion energy breakthrough: Neutron impact on tokamak components uncovered
Understanding how neutron radiation damages thyristors will allow researchers to develop more radiation-resistant materials and designs. Thyristors control the large electrical currents needed to create and maintain the extreme conditions required for nuclear fusion.
The study examined the impact of 14 MeV neutron radiation on the electrical properties of high-power thyristors, which are crucial in Tokamak fusion reactors because they control substantial electrical currents. When exposed to neutrons, thyristors’ electrical characteristics change, leading to permanent damage.
To understand this process, researchers developed a mathematical model correlating key thyristor parameters with observed degradation under neutron exposure. Both simulations and experiments validated the model, revealing the electrical parameter degradation.
The study also investigated how the performance change of irradiated thyristors affects the security protection system of the fusion reactor. Results showed that increasing leakage current in damaged thyristors could result in failure of this critical safety mechanism, jeopardizing the superconducting Tokamak.
This research provides important insights into the decline in performance of thyristors in neutron-rich environments, emphasizing the need for enhanced reliability in protective systems for fusion reactors. By understanding the neutron damage mechanism of high-power thyristors, researchers can develop new materials and designs that are more resistant to radiation damage, leading to safer and more reliable fusion reactors.
Source: https://interestingengineering.com/energy/fusion-energy-neutron-impact-on-tokamak