contemporary Field



A variety of rare Earth magnets are major players in contemporary Physics. Their magnetic fields help to keep plasma inside the chambers of experimental thermonuclear reactors thanks to their assistance, particle flow is accelerated and directed towards the tunnels of accelerators for instance. But not all of the existing electro rare earth magnets feature the same attributes in recent years, and scientists and engineers from Fermi National Laboratory have developed an electromagnet that is superconducting, that is superior to anything before created in this area.

In places like the Large Hadron Collider, which is the most powerful particle accelerator to date, rare earth magnets are required to create fields of at minimum 8 Tesla. In addition that output of the magnet to the operating mode is carried out at the rate of 0.006 Tesla per second and takes about 20 minutes. In particle accelerators that use rare earth magnets that are wrapped in copper , the magnetic field grows at a greater rate. For instance, the rare earth magnets in the Japanese accelerator J-PARC, which generates the highest-quality neutron flux, can be capable of increasing the strength of field at the rate of 70 Tesla per second, and the rare earth magnets from the Fermi laboratory accelerator, at a rate of 30 Tesla per second.

One of the issues that makes it hard to increase the field of superconducting rare earth magnets in high-speed operation is the appearance of “hot spots” in the windings their size increases with increasing current and the generated magnetic field. When you increase the current, the temperature of these spots increases so much that the material changes between a superconducting and regular state, but with electrical resistance. The magnet ceases to function or ceases to function completely.

Fermi lab scientists have found an alternative in the form of YBCO. The complex mix composed of copper, yttrium barium and oxygen is a well-known superconductor at high temperatures. It was from this material that magnet windings were made, capable of operating in temperatures of 6 to 20 Kelvin and withstanding currents as high as 1000 amperes.


The first prototype of a high-temperature electromagnet proved that it could deliver speeds of 290 Tesla per second, with an intensity of 0.5 Tesla. Even though this strength of magnetic field does not suffice for particle acceleratorsbut scientists believe that they could still boost the power of strong magnets, which can boost magnetic field’s strength.

Currently, scientists at the Fermi laboratory continue to experiment with their new


The test involves evaluating different modes of operation and changing the power source used. Perhaps, in time the same technology will be used

rare earth magnets

It will be used in the new experiments, which will include neutrino detectors, as well as the next generation collider featuring a 100-kilometer circular ring. Future Circular Collider.

Leave a comment

Your email address will not be published. Required fields are marked *