Helium purification at physics lab

Helium purification at physics lab

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Credit: SPUTNIK/SCIENCE PHOTO LIBRARY

Caption: View of a helium purification plant at a nuclear physics laboratory. The helium is to be used to keep superconducting magnets cool at the T-15 fusion reactor at the Kurchatov Institute, Moscow. T-15 was completed in 1988 and was the first 'tokomak' design of nuclear fusion reactor to use superconducting magnets. These help confine the superhot plasma in the doughnut-shaped reactor vessel. Superconductivity is a state in which a metal has no resistance to an electrical current, but requires to be cooled to just a couple of degrees above absolute zero to achieve this. The only effective coolant at such temperatures is liquid helium. Photographed in 1989.

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Keywords: cold, coolant, cryogenic, fusion, helium, institute, kurchatov, laboratory, liquid, moscow, novosti, nuclear, physics, purification, reactor, research, russia, russian, superconducting, superconductivity, t-15, tokomak

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