In the process of fusion energy production based hydrogen heavy isotopes deuterium and tritium as fuel, high-energy neutrons are released. These neutrons have many roles in a fusion reactor.
On one side, neutrons from the fusion reactions taking place in the fuel inside the reactor vacuum vessel generate the heat that, in a fusion plant, will initiate the electricity-producing process. Moreover, neutron interaction with lithium inside the machine will produce tritium.
This experimental machine will provide scientific and technological answers to some particularly complex problems of the fusion process (such as the management of very high temperatures) and stands as a “link” between ITER and DEMO international projects. Therefore DTT should operate integrating various aspects, with significant power loads, flexible divertors, plasma edge and bulk conditions approaching as much as possible those planned for DEMO, at least in terms of dimensionless parameters.
Their new approach is based on new high-temperature superconductors that have become commercially available recently. Those superconductors will allow to strengthen the magnetic field that confines the plasma and will allow to build smaller and cheaper nuclear reactors than the actual projects such as ITER or JET.
The National Institutes for Quantum and Radiological Science and Technology (QST) of Japan has selecteda Cray XC50™ supercomputer to be its new flagship supercomputing system. The yet unnamed supercomputer will be the replace for the Bullx cluster known as Helios.
Whether the nuclear fusion approach is based upon magnetically confined plasmas or inertial confinement, the underlying idea is the same, to fuse nuclei made up of protons and neutrons into a more massive nucleus. But what if there exists other physical mechanisms?
A recent paper published in Nature by Marek Karliner and Jonathan L. Rosner describes the fusion reaction at a quark-level by the double charmed baryon discovered at CERN, Geneva. CERN hosts the Large Hadron Collider (LHC) which is the world’s largest and most powerful particle collider which intends to discover the fundamental structure of the universe.
CIEMAT’s TJ-II Fusion experiment have completed twenty years of operation from the first high temperature plasmas that were achieved in December in 1997.
During those twenty years, the TJ-II device has contributed successfully to science by incorporating a unique set of measurement and instrumentation systems for model validation and essential theory for confinement fusion plasma physics. As a result of this strategy, the results obtained from TJ-II have contributed to crucial subjects, such as physics of transporting impurities, control of instabilities generated by energetic particles, physics of self-organization in systems not in equilibrium, and coupling between neoclassical and turbulent transport mechanisms, which have led to publications in the most prestigious physics journals, such as “Physical Review Letters” and “Nuclear Fusion”.