This paper investigates whether a fusion power plant could be designed to be passively proliferation-proof. Even low neutron production rates enable fissile-fuel breeding, so such a fusion reactor must burn neutron-lean fuels. To burn these fuels economically requires a highpower-density fusion concept, and a D-He field-reversed configuration will be analyzed here. The paper discusses physics a...

1) Adequate fusion power areal density (Pf / Ablanket ≥ 4 MW m ) and 2) High fusion (Q>25) and electrical (Qe~5) gain. However, observing that even a simple burning plasma experiment ITER (R~6.2 m, Q=10, P / A <1MW m , Qe=0), which clearly underperforms as a fusion reactor, will cost ~25B$ strongly motivates us to decrease as much as possible the linear size (R) and therefore the cost (~R) of p...

The neutron yield in a D-He reactor is much lower than that in a D-T reactor of equivalent power. Therefore, the rate of neutron damage and gas production in the first wall of D-He reactors is lower by more than an order of magnitude. Whereas different structural materials proposed for use in commercial fusion reactors will last the reactor lifetime of 30 full power years in a D-He reactor, fre...

A concise overview is given on materials applied in fusion technology. The influence of plasma operation on the behaviour of reactor components and diagnostic systems is discussed with emphasis on effects caused by fast particles reaching the reactor wall. Issues related to primary and induced radioactivity are reviewed: tritium inventory and transmutation. Tritium breeding in the reactor blank...

The Helical Fusion group (Helical Co., Ltd. in Japan and USA, Inc.) is developing a 50 MWe-class steady-state helical fusion reactor, which kind of stellarator called heliotron composed two continuous coils similar to the large device operated without plasma current. HESTIA plays role pilot plant. first-of-a-kind power plant that would follow will be 100 reactor. After more than one year operat...

It is shown that the limited thermal power handling capacity of the standard divertors (used in current as well as projected tokamaks) forces extremely high (∼ 95%) radiation fractions fRad in tokamak fusion reactors [1–3] with heating powers considerably larger than ITER-FEAT [4]. Independent of how the radiation may be apportioned between the scrape off layer (SOL) and the core, these enormou...

As everyone known the significant progresses have been achieved on tokamaks, which means that the scientific feasibility of tokamak reactor for fusion energy has been achieved (Q=1). But for commercial power plan the economics will be very important. Therefore to find improved (advanced) confinement operation model is the popular topic always for tokamak research. On other hand if any tokamak o...

Alternative reactor based on a field-reversed configuration (FRC) has advantages of the cylindrical geometry, the open field line geometry (direct energy conversion (DEC) of the charged-particle flow), and high � (plasma pressure/magnetic-field pressure). This paper aims to evaluate the attractiveness of a low radioactive FRC fusion core. Analysis of a conceptual deuterium helium-3 (D-He) fusio...

The design, construction and control of artificial self-organized systems modelled on dynamical behaviours of living systems are important issues in biologically inspired engineering. Such systems are usually based on complex reaction dynamics far from equilibrium; therefore, the control of non-equilibrium conditions is required. Here we report a droplet open-reactor system, based on droplet fu...