Search results
Results from the WOW.Com Content Network
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 ]
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.
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 ...
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.
Toroidal machines can be axially symmetric, like the tokamak and the reversed field pinch (RFP), or asymmetric, like the stellarator.The additional degree of freedom gained by giving up toroidal symmetry might ultimately be usable to produce better confinement, but the cost is complexity in the engineering, the theory, and the experimental diagnostics.
With the goal of breakeven (a fusion energy gain factor equal to 1) now in sight, a new series of machines were designed that would run on a fusion fuel of deuterium and tritium. These machines, notably the Joint European Torus (JET) and Tokamak Fusion Test Reactor (TFTR), had the explicit goal of reaching breakeven.
For premium support please call: 800-290-4726 more ways to reach us
The design was based on Tokamak Physics Experiment, which was based on Compact Ignition Tokamak design – See Robert J. Goldston. 1995 – Started Project KSTAR; 1997 – JET of EU emits 17 MW energy from itself. 1998 – JT-60U went beyond energy junction successfully and acknowledged the possibility of commercialization of nuclear fusion.