The Mega Ampere Spherical Tokamak, or MAST experiment is a nuclear fusion experiment in operation at Culham, Oxfordshire, England since December 1999. It follows the highly successful START experiment (1991 - 1998). MAST uses the same innovative spherical tokamak design as START, which has shown itself to be more efficient than the conventional toroidal design, adopted by JET and ITER. START proved to exceed even the most optimistic predictions and the purpose of MAST is to confirm the results of its forerunner by using a larger more purpose-built experiment.
It is fully commissioned by EURATOM/UKAEA and took two years to design and a further two years to construct. It includes a neutral beam injector similar to that used on START and uses the same merging compression technique instead of the conventional direct induction. Merging compression provides a valuable saving of central solenoid flux, which can then be used to further ramp up the plasma current and/or maintain the required current flat-top.
Soon, a new tokamak called "MAST Upgrade" will be replacing MAST.
Research findings from Research Institute for Particle and Nuclear Physics update understanding of scientific instruments.
Dec 14, 2010; Investigators publish new data in the report 'Avalanche photodiode based detector for beam emission spectroscopy.' "An avalanche...