Aditya (tokamak)
Encyclopedia
ADITYA is a medium size tokamak
installed at the Institute for Plasma Research
in India
. It has a major radius of 0.75 metres and a minor radius of the plasma is 0.25 metres. The maximum field strength is 1.2 tesla
produced by the help of 20 toroidal field coils spaced symmetrically in the toroidal direction. It is operated by two power supplies, capacitor bank and APPS (ADITYA pulse power supply). The typical plasma parameters during capacitor bank discharges are: Ip ~ 30 kA, shot duration ~25 msec, central electron temperature ~ 100 eV and core plasma density ~ 1019 m-3 and the typical parameters of APPS operation is ~ 100kA plasma current, ~ 100 msec duration,central electron temp. ~ 300eV and ~ 3x1019 m-3 core plasma density.
Various diagnostics used in ADITYA include electric and magnetic probes, microwave interferometry
, Thomson scattering
and charge exchange spectroscopy
.
Tokamak
A tokamak is a device using a magnetic field to confine a plasma in the shape of a torus . Achieving a stable plasma equilibrium requires magnetic field lines that move around the torus in a helical shape...
installed at the Institute for Plasma Research
Institute for Plasma Research
Institute for Plasma Research is an autonomous physics research institute located in India. The institute is involved in research in aspects of plasma science including basic plasma physics, research on magnetically confined hot plasmas and plasma technologies for industrial applications. It is a...
in India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
. It has a major radius of 0.75 metres and a minor radius of the plasma is 0.25 metres. The maximum field strength is 1.2 tesla
Tesla (unit)
The tesla is the SI derived unit of magnetic field B . One tesla is equal to one weber per square meter, and it was defined in 1960 in honour of the inventor, physicist, and electrical engineer Nikola Tesla...
produced by the help of 20 toroidal field coils spaced symmetrically in the toroidal direction. It is operated by two power supplies, capacitor bank and APPS (ADITYA pulse power supply). The typical plasma parameters during capacitor bank discharges are: Ip ~ 30 kA, shot duration ~25 msec, central electron temperature ~ 100 eV and core plasma density ~ 1019 m-3 and the typical parameters of APPS operation is ~ 100kA plasma current, ~ 100 msec duration,central electron temp. ~ 300eV and ~ 3x1019 m-3 core plasma density.
Various diagnostics used in ADITYA include electric and magnetic probes, microwave interferometry
Interferometry
Interferometry refers to a family of techniques in which electromagnetic waves are superimposed in order to extract information about the waves. An instrument used to interfere waves is called an interferometer. Interferometry is an important investigative technique in the fields of astronomy,...
, Thomson scattering
Thomson scattering
Thomson scattering is the elastic scattering of electromagnetic radiation by a free charged particle, as described by classical electromagnetism. It is just the low-energy limit of Compton scattering: the particle kinetic energy and photon frequency are the same before and after the scattering...
and charge exchange spectroscopy
Spectroscopy
Spectroscopy is the study of the interaction between matter and radiated energy. Historically, spectroscopy originated through the study of visible light dispersed according to its wavelength, e.g., by a prism. Later the concept was expanded greatly to comprise any interaction with radiative...
.