HL-2M Tokamak reactor
2020 DEC 7
Preliminary >
Science and Technology > Energy > Nuclear
Why in news?
- China successfully powered up its “artificial sun” nuclear fusion reactor for the first time.
About the Tokamak:
- The HL-2M Tokamak reactor is China’s largest and most advanced nuclear fusion experimental research device, and scientists hope that the device can potentially unlock a powerful clean energy source.
- It uses a powerful magnetic field to fuse hot plasma and can reach temperatures of over 150 million degrees Celsius, approximately ten times hotter than the core of the sun.
- Located in Sichuan province and completed late last year, the reactor is often called an “artificial sun” on account of the enormous heat and power it produces.
About Tokamaks:
- Tokamak is a device used in nuclear-fusion research for magnetic confinement of plasma.
- It consists of a complex system of magnetic fields that confine the plasma of reactive charged particles in a hollow, doughnut-shaped container.
- The tokamak concept (an acronym from the Russian words for toroidal magnetic confinement) was developed in the mid-1960s by Soviet plasma physicists.
- It produces the highest plasma temperatures, densities, and confinement durations of any confinement device.
About Nuclear Fusion as a power source:
- Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions.
- In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices designed to harness this energy are known as fusion reactors.
- Fusion processes require fuel and a confined environment with sufficient temperature, pressure, and confinement time to create a plasma in which fusion can occur.
- As a source of power, nuclear fusion is expected to have many advantages over fission including reduced radioactivity in operation and little high-level nuclear waste, ample fuel supplies, and increased safety.
- However, the necessary combination of temperature, pressure, and duration has proven to be difficult to produce in a practical and economical manner.
PRELIMS QUESTION
In which of the following countries is the ITER tokamak complex, an international research project located?
(a)China
(b)France
(c)Italy
(d)USA
Answer to prelims question