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A toroidal apparatus for producing controlled fusion reactions in hot plasma.
- ‘In the tokamak, two powerful electromagnets create fields that are so powerful that they can hold a hot plasma in place as readily as a person can hold an orange in her hand.’
- ‘As discussed earlier, full steady-state operation in a tokamak requires that the inductive plasma current is completely replaced by a non-inductive one.’
- ‘Currently the most developed plasma configuration is produced in the doughnut-shaped tokamak.’
- ‘Fusioneers have worried that bigger tokamaks would require a much stronger magnetic-field ‘bottle’ to confine the superhot plasma that fusion requires.’
- ‘The most common mechanism for controlling plasma reactions today is called a tokamak, originally designed by the Russian physicist Lee Artsimovich in the late 1950s.’
1960s: Russian, from toroidalʹnaya kamera s magnitnym polem ‘toroidal chamber with magnetic field’.
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