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In October 2023, JET set its final fusion energy record, producing 69.29 megajoules over 6 seconds from only 0.21 mg of D-T fuel. [ 41 ] [ 42 ] In November 2023, a petition asking that JET not be closed was started, with scientists fearing a research time gap and personnel loss between JET's closure and the start of ITER's operations. [ 4 ]
JT-60 (short for Japan Torus-60) is a large research tokamak, the flagship of the Japanese National Institute for Quantum Science and Technology's fusion energy directorate. As of 2023 the device is known as JT-60SA and is the largest operational superconducting tokamak in the world, [ 1 ] built and operated jointly by the European Union and ...
This led to the adoption of the tokamak by the majority of fusion research establishments internationally. In 1977, following protracted negotiations, Culham was chosen as the site for the Joint European Torus (JET) tokamak. [3] Construction began in 1978 and was completed on time and on budget, with first plasma in June 1983.
The current record of fusion power generated by MCF devices is held by JET. In 1997, JET set the record of 16 megawatts of transient fusion power with a gain factor of Q = 0.62 and 4 megawatts steady state fusion power with Q = 0.18 for 4 seconds. [3] In 2021, JET sustained Q = 0.33 for 5 seconds and produced 59 megajoules of energy, beating ...
TFTR (Tokamak Fusion Test Reactor) [10] Shut down: 1980–1982: 1982–1997: Princeton: Princeton Plasma Physics Laboratory: 2.4 m / 0.8 m: 5.9 T: 3 MA: Attempted scientific break-even, reached record fusion power of 10.7 MW and temperature of 510 MK: Tokamak de Varennes (TdeV) Shut down? 1983–1997: Montreal: National Research Council Canada ...
The project is given the name Tokamak Fusion Test Reactor (TFTR). The Kurchatov Institute builds the TO-2, the first tokamak with a divertor, using a toroidal configuration which would soon be superseded by poloidal divertors. [27] 1977. The 20 beam Shiva laser at LLNL is completed, capable of delivering 10.2 kilojoules of infrared energy on ...
The current record for highest Q in a tokamak (as recorded during actual D-T fusion) was set by JET at Q = 0.67 in 1997. The record for Q ext (the theoretical Q value of D-T fusion as extrapolated from D-D results) in a tokamak is held by JT-60 , with Q ext = 1.25, slightly besting JET's earlier Q ext = 1.14.
[13] The term "tokamak" was coined in 1957 [14] by Igor Golovin, a student of academician Igor Kurchatov.It originally sounded like "tokamag" ("токамаг") — an acronym of the words "toroidal chamber magnetic" ("тороидальная камера магнитная"), but Natan Yavlinsky, the author of the first toroidal system, proposed replacing "-mag" with "-mak" for euphony. [15]