Nuclear Waste Transmutation in Subcritical Reactors Driven by Target-Distributed Accelerators

Generic method to assess transmutation feasibility for nuclear waste treatment and application to irradiated graphite

Graphite-moderated nuclear reactors have already produced more than 250000 tons of irradiated nuclear graphite, or i-graphite, world-wide. The sustainability of this technology relies on the end-of-life management of its moderator, which is activated into a long-lived nuclear waste, by neutron fluxes, during operating time. In particular, C14 is created. Nuclear transmutation, enabled by laser-driven particle acceleration, has been envisioned as a potential novel treatment scheme for long-lived nuclear waste. By triggering controlled nuclear reactions with energetic particles, long-lived radio…

System for Nuclear Waste Transmutation Driven by Target-Distributed Accelerators

A design concept and characteristics for an epithermal breeder controlled by variable feedback and external neutron source intensity are presented. By replacing the control rods with neutron sources, we could improve safety and perform radioactive waste burning in high flux subcritical reactors (HFSR). To increase neutron source intensity the HFSR is divided into two zones: a booster and a blanket operating with solid and liquid fuels. Use of a liquid actinide fuel permits transport of the delayed-neutron emitters from the blanket to the booster where they can provide additional neutrons or al…

Fusion Driven Transmutation of Transuranics in a Molten Salt

A first set of computational studies of transmutation of spent nuclear fuel using compact tunable 14 MeV D-T fusion driven neutron sources is presenter. Where we study the controllability, time evolution, as well as effects of spatial distribution of the neutronics in the transmutation in the subcritical operations regime of a transmutator, in which our neutron sources are small, distributed, and can be monitored. Source neutrons are generated via beam-target fusion whereas a deuteron beam is created by laser irradiation of nanometric foils, through the Coherent Acceleration of Ions by Laser (…

通过质子加速器预测长寿命裂变产物的裂变诱导转化率

Prediction of Spallation Induced Transmutation Rates For Long Lived Fission Products via Proton Accelerator

本研究通过质子加速器探讨长寿命裂变产物的转化可能性，发现锝、碘、硒是高效转化候选者，而锆和铯则效率较低，经济性因同位素而异。

高效嬗变长寿命裂变产物：基于伽马工厂束流驱动的先进核能系统

Efficient transmutation of long-lived fission products in a Gamma Factory beam driven advanced nuclear energy system

本研究探讨利用伽马工厂高强度γ射线束驱动先进核能系统，实现长寿命裂变产物高效嬗变，并评估其热功率与嬗变率，表明该方案在提供额外嬗变能力的同时，净功率效率可与质子束方案相当。

更安全、更小、更清洁的次临界钍裂变-氘核聚变混合反应堆：用DD对撞机替代μ子催化聚变

A Safer, Smaller, Cleaner Subcritical Thorium Fission - Deuteron Fusion Hybrid Reactor: DD Collider Instead of Muonic Fusion

针对化石燃料高碳排放问题，提出用DD对撞机替代μ子催化聚变，构建更安全、更小、更清洁的次临界钍裂变-聚变混合反应堆，以降低放射性废物并提升可行性。