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 typeSpherical tokamak
LocationCulham, Oxfordshire, UK
AffiliationCulham 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 volume8 m3
Magnetic field0.55 T (5,500 G)
Heating power5 MW
Plasma current1.3 MA
History
Date(s) of construction1997
Year(s) of operation1999–2013
Preceded bySmall Tight Aspect Ratio Tokamak (START)
Succeeded byMAST 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.