Stellarators are an alternative to tokamaks in the quest for a fusion reactor based on magnetic confinement. Their most prominent advantage is that their magnetic field is created almost entirely by external coils. No time-dependent current is thus needed inside the plasma, which enables steady- state operation and makes stellarators less prone to large- scale …
Good confinement of fusion-generated alpha particles is one of the basic properties of a fusion reactor. On the one hand, these alpha particles are expected to contribute to heat the plasma, which requires their confinement time to be comparable to the time that it takes them to thermalize by giving their energy to the bulk …
Neoclassical transport is a fundamental part of stellarator scenario development, since it is expected to account for an important part of the energy losses in a stellarator reactor. Therefore, its minimization is in the core or any process of stellarator optimization and design. In a tokamak, the radial neoclassical transport is very small. The reason …
The International Stellarator/Heliotron Database, pursued under the auspices of IEA Implementing Agreement for Cooperation in Development of the Stellarator Heliotron Concept (2.10.1992), aims at contributing to bringing the stellarator line to maturity as a possible alternative to tokamaks. This is done by providing a physics-based step-ladder approach on issues deemed critical for the development of credible …