ST40 has been rebuilt and successfully operated in our new facilityOur news
12 April 2019

ST40 has been rebuilt and successfully operated in our new facility

Last year’s milestone achievement of 15 million degree temperatures in the ST40 tokamak was achieved with ST40 in our old building at 120 Olympic Avenue on Milton Park. Soon after, the whole tokamak was dismantled and moved to our new, larger facility. In just nine months it has been rebuilt, upgraded and operated again.

Last week we created plasma in ST40 and successfully repeated experiments from last year, demonstrating that ST40 was back to the level of performance attained before the move.

Additionally, we tested the toroidal field magnets after an upgrade to the power supplies. We ramped the current up to 125kA through the TF coils, producing a field of 1.5T at 0.4m, the highest ever magnetic field in a spherical tokamak.

The whole team at Tokamak Energy are extremely pleased with how quickly we produced hot plasma again after the major upgrade. ST40 will now shut down again for several weeks’ worth of additional engineering upgrades, including the installation of new diagnostics.

When we begin ST40 experiments again later in the year it will be the start of our campaign towards 100 million degrees – fusion temperatures.




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