Mega Ampere Spherical Tokamak

51°39′33″N 1°13′50″W / 51.65917°N 1.23056°W / 51.65917; -1.23056

MAST

Mega Ampere Spherical Tokamak
Plasma in the MAST reactor
Device type	Spherical tokamak
Location	Culham, Oxfordshire, UK
Affiliation	Culham Centre for Fusion Energy
Technical specifications
Major radius	~ 0.9 m (2 ft 11 in)
Minor radius	~ 0.6 m (2 ft 0 in)
Plasma volume	8 m3
Magnetic field	0.55 T (5,500 G)
Heating power	5 MW
Plasma current	1.3 MA
History
Date(s) of construction	1997
Year(s) of operation	1999–2013
Preceded by	Small Tight Aspect Ratio Tokamak (START)
Succeeded by	MAST Upgrade

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.^[1]