2021-11-25

The KSTAR fusion research facility in Korea set a record of 30 seconds plasma confinement time

By yqqlm yqqlm

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909f627bf0aba05 - The KSTAR fusion research facility in Korea set a record of 30 seconds plasma confinement time

the basic idea of nuclear fusion is to reproduce the process that occurs inside the sun. Therefore, the “artificial sun” also needs an environment that can withstand extreme gravity, pressure and heat, so that the hydrogen (H) nuclei in the plasma can collide with each other at high speed to form helium (he) and release a lot of energy

the Tokamak device aims to reproduce the process of hydrogen nuclear fusion called helium on earth. By arranging a series of coils around an annular reactor, the plasma is restrained by a magnetic field, and then heated to a temperature of tens of millions of ℃ enough for nuclear fusion reaction

The KSTAR fusion research facility in Korea set a record of 30 seconds plasma confinement time

at present, there are many Tokamak units in operation all over the world, and the KSTAR reactor in Korea built in 2007 is making some promising progress. In 2008, KSTAR tested the first batch of plasma

The KSTAR fusion research facility in Korea set a record of 30 seconds plasma confinement time(1)

in 2016, the device set a record of heating the plasma to 50 million ℃ and maintaining it for 70 seconds. The result was quickly overtaken by the China east project in 2017 with a duration of 102 seconds

The KSTAR fusion research facility in Korea set a record of 30 seconds plasma confinement time(2)

at present, fusion research institutions all over the world are trying to heat the plasma to hundreds of millions of degrees Celsius. In 2018, KSTAR tried to maintain 1.5 seconds, and successively broke the world record of 8 / 20 seconds in 2019 / 2020

The KSTAR fusion research facility in Korea set a record of 30 seconds plasma confinement time(3)

now, as reported by business Korea, the South Korean KSTAR team has taken another step forward, taking the lead in extending the maintenance time to 30 seconds. In order to achieve this goal, researchers are said to have further optimized the magnetic field conditions and heating system

looking forward to 2026, they hope to increase the plasma maintenance time to 300 seconds by upgrading the power supply and using tungsten shunt, while preventing the temperature of the indoor wall from getting out of control