Scientists from the National high magnetic field laboratory (MagLab) at Florida state University (USA) created the world’s most powerful superconducting magnet. Device with a diameter not more than a centimeter and about the size of a roller for toilet paper (don’t know why, but the creators hold this analogy) is capable of generating a record magnetic field of Tesla at 45.5. It is more than 20 times more powerful than the magnets of hospital apparatus magnetic resonance imaging. It is noted that previously, only pulsed magnets are capable of maintaining a magnetic field within a fraction of a second, reached a higher intensity.
The Creator of the magnet is the engineer of the MagLab Sanyuan Khan. About how he and his team succeeded, according to an article published in the journal Nature. According to experts, they used new materials for superconductor and magnet to achieve such targets.
In fact, the researchers have created two record magnet. The test uses cuprate superconductor alloy of niobium-based. It is capable of generating magnetic fields of 45 Tesla and thus consumes a small amount of energy. According to scientists, previously created based magnets cuprate were too fragile for use in technological applications, but the new magnets have to withstand a field strength of 60 Tesla.
What made the most powerful superconducting magnet?
For the record magnet capable of generating a field intensity of 45.5 Tesla superconductors were made of new compounds, known as REBCO (it is based on the oxide of rare earth barium-copper) and capable of passing twice the current, compared with other superconductors, used to create a record of the magnets. Thanks to this new magnet is able to create a much stronger magnetic field.
Modern electromagnets contain insulation between the conductive layers, which sends current on the most effective way. But it also adds weight and volume.
Innovation Khan: a superconducting magnet, without insulation. In addition to a better design, this option allows you to protect the magnet from the fault, the so-called breakdown field. It can occur when the existing conductor damage or defects blocking the current movement in the appointed place, causing heating of the material and loss of its superconducting properties. In the absence of insulation current in this case, it just goes the other way, preventing breakdown.
It is noted that the field strength of the new magnet exceeded tension power consuming resistive magnets, which use superconductors, and conventional superconducting magnets superconducting resistive and hybrid magnets.
“The fact that the layers of the coil are not isolated from each other means that they can easily and efficiently transmit the load between them, so that he could circumvent any obstacle in its path,” explains study co-author David Labelthe.
Why the need for superconducting magnets?
Such superconducting magnets are required to operate a range of different devices, from MRI machines to high-speed transport systems and fusion reactors. It is expected that superconducting magnets can advance research in different scientific fields.
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