 |
| Sino-UNIted Spherical Tokamak | |
|---|---|
| Device type | Spherical tokamak |
| Location | Beijing, China |
| Affiliation | Tsinghua University |
| Technical specifications | |
| Major radius | 30 cm (12 in) |
| Minor radius | 23 cm (9.1 in) |
| Magnetic field | 0.15 T (1,500 G) (toroidal) |
| Plasma current | 30 kA |
| History | |
| Year(s) of operation | 2002–present |
| Links | |
| Website | SUNIST Laboratory |
SUNIST (or Sino-UNIted Spherical Tokamak) is a small spherical tokamak in the Department of Engineering Physics of Tsinghua University, Beijing, China. [1]
| Parameter | Symbol | Value |
|---|---|---|
| Major radius | R | 30 cm |
| Minor radius | a | 23 cm |
| Elongation ratio | κ | 1.6 |
| On-axis magnetic field | B0 | 1500 gauss (0.15 T) |
| Typical plasma current | IP | 30 kA |
Alfven wave current drive experiments in spherical tokamak plasmas Alfven wave can generate toroidal plasma current without density limits. This is very favourable for spherical tokamak plasmas, which have very high dielectric constants that makes LHCD or ECCD very hard.
A tokamak is a device which uses a powerful magnetic field to confine plasma in the shape of a torus. The tokamak is one of several types of magnetic confinement devices being developed to produce controlled thermonuclear fusion power. As of 2016, it was the leading candidate for a practical fusion reactor.
The Tokamak Fusion Test Reactor (TFTR) was an experimental tokamak built at Princeton Plasma Physics Laboratory (PPPL) circa 1980 and entering service in 1982. TFTR was designed with the explicit goal of reaching scientific breakeven, the point where the heat being released from the fusion reactions in the plasma is equal or greater than the heating being supplied to the plasma by external devices to warm it up.
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Mega Ampere Spherical Tokamak (MAST) was a nuclear fusion experiment, testing a spherical tokamak nuclear fusion reactor, and commissioned by EURATOM/UKAEA. The original MAST experiment took place at the Culham Centre for Fusion Energy, Oxfordshire, England from December 1999 to September 2013. A successor experiment called MAST Upgrade began operation in 2020.
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The National Spherical Torus Experiment (NSTX) is a magnetic fusion device based on the spherical tokamak concept. It was constructed by the Princeton Plasma Physics Laboratory (PPPL) in collaboration with the Oak Ridge National Laboratory, Columbia University, and the University of Washington at Seattle. It entered service in 1999. In 2012 it was shut down as part of an upgrade program and became NSTX-U, for Upgrade.
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Compact toroids are a class of toroidal plasma configurations that are self-stable, and whose configuration does not require magnet coils running through the center of the toroid. They are studied primarily in the field of fusion energy, where the lack of complex magnets and a simple geometry may allow the construction of dramatically simpler and less expensive fusion reactors.
The Pegasus Toroidal Experiment is a plasma confinement experiment relevant to fusion power production, run by the Department of Engineering Physics of the University of Wisconsin–Madison. It is a spherical tokamak, a very low-aspect-ratio version of the tokamak configuration, i.e. the minor radius of the torus is comparable to the major radius.
A spherical tokamak is a type of fusion power device based on the tokamak principle. It is notable for its very narrow profile, or aspect ratio. A traditional tokamak has a toroidal confinement area that gives it an overall shape similar to a donut, complete with a large hole in the middle. The spherical tokamak reduces the size of the hole as much as possible, resulting in a plasma shape that is almost spherical, often compared with a cored apple. The spherical tokamak is sometimes referred to as a spherical torus and often shortened to ST.
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Ksenia Aleksandrovna Razumova is a Russian physicist. She graduated from the Physical Faculty of Moscow University in 1955 and took a position at the then called Kurchatov Institute of Atomic Energy in Moscow, then USSR. She defended her Ph.D. in 1966, was Candidate in Physical and Mathematical sciences in 1967, and became Doctor of Sciences in 1984. She is laboratory head at the Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute. Since the beginning she is actively involved plasma physics in research on the tokamak line of Magnetic confinement fusion.
Commonwealth Fusion Systems (CFS) is an American company founded in 2018 aiming to build a compact fusion power plant based on the ARC tokamak power plant concept. The company is based in Cambridge, Massachusetts, and is a spin-off of the Massachusetts Institute of Technology (MIT). CFS has participated in the United States Department of Energy’s INFUSE public-private knowledge innovation scheme, with several national labs and universities.
Nathaniel Joseph Fisch is an American plasma physicist known for pioneering the excitation of electric currents in plasmas using electromagnetic waves, which was then used in tokamak experiments. This contributed to an increased understanding of plasma wave–particle interactions in the field for which he was awarded the James Clerk Maxwell Prize for Plasma Physics in 2005 and the Hannes Alfvén Prize in 2015.
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