The ''ISTTOK Tokamak'' ("Instituto Superior Técnico TOKamak") is a research
fusion reactor (
tokamak
A tokamak (; ) is a device which uses a powerful magnetic field generated by external magnets to confine plasma (physics), plasma in the shape of an axially symmetrical torus. The tokamak is one of several types of magnetic confinement fusi ...
) of the
Instituto Superior Técnico
The Instituto Superior Técnico (IST, also known as Técnico, and stylized TÉCNICO LISBOA; English: ) is the school of engineering and technology of the University of Lisbon. It was founded as an autonomous school in 1911, and was integrated in ...
.
It has a circular cross-section due to a poloidal graphite limiter and an iron core transformer. Its particularity is that it is one of the few tokamaks operating in AC (alternating plasma current) regime, as well in DC regime. In 2013, the AC operation allowed the standard discharges to extend from 35 ms to more than 1s.
Characteristics
* Minor radius: 0.085 metre
* Major radius: 0.46 metre
* Plasma current: ~7kA kiloAmperes
* Plasma life span: 30/1000 milliseconds (DC/AC)
* Maximum toroidal magnetic field: 2.8 Tesla
* Nominal toroidal magnetic field: 0.3-0.6 Tesla
See also
*
Small Tight Aspect Ratio Tokamak
The Small Tight Aspect Ratio Tokamak (START) was a nuclear fusion experiment that used magnetic confinement to hold plasma. START was the first full-sized machine to use the spherical tokamak design, which aimed to greatly reduce the aspect rati ...
*
Ball-pen probe
A ball-pen probe is a modified Langmuir probe used to measure the plasma potential in magnetized plasmas. The ball-pen probe balances the electron and ion saturation currents, so that its floating potential is equal to the plasma potential. Be ...
External links
ISTTOK official site
References
Tokamaks
Nuclear research institutes
University of Lisbon
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