Article list
Superconductivity offers transmission of direct electrical current with zero losses. However, it is possible to only produce wires with finite length (< 1km) and to obtain required lengths, joints with zero or very low electrical resistance have to be developed. One of the fields which would greatly benefit from such joints are short-circuited superconducting magnets,…
Magnetic shielding is an integral part of many devices in industrial, medical or research sector. The most common shielding method is passive shielding, however using a superconducting and ferromagnetic material we can obtain much better results. The disadvantage of such magnetic cloak is unfortunately the need to cool it down to cryogenic temperatures (in this…
High field superconducting magnets have many present and potential future applications, such as medical magnetic resonance imaging (MRI) machines, particle accelerators like the Large Hadron Collider for research, fusion reactors for energy applications, and high field scientific experiments, which require tens of Teslas of magnetic field strength. These magnets usually consist of several pancake coils…
Due to the growing demand for eco-friendly and energy-efficient technology, superconducting generators and motors are gaining more and more popularity. In particular, the use of a superconducting racetrack coil in either the rotor or stator of electric motors for air transport is a significant advancement in electrical engineering, being the most promising technology that could…
Superconducting devices require cryogenic temperatures to function, which usually requires coolant such as liquid helium. Operating magnets at liquid helium temperatures is expensive and also the operating temperature is close to the boiling point of helium. A situation can occur, where a heat is generated locally in the magnet, which leads to vaporization of the…
Ex-situ MgB2 wires, specifically wires manufactured by ASG (see Figure 1), are considered for a cable design, in the frame of European project SCARLET. This project aims to develop industrial level superconducting cables capable of carrying DC current of 20 kA which is cooled by liquid hydrogen to 20 K. Inserting a superconducting cable in…
Magnesium diboride (MgB2) is a promising superconductor for many applications. One of the advantages of this material, is that it is possible to join single or multi-core MgB2 wires using MgB2 joint, obtaining a connection with very low or zero electrical resistance suitable for persistent mode operation of devices, such as high field superconductor magnets….
High-temperature superconductors, such as Magnesium diboride (MgB2), are enabling materials for building state-of-the-art high-field magnets, which will provide new findings in many fields of physics. One of the hurdles in the development of superconducting magnets is a “persistent switch”. Persistent switch is a joint in superconducting magnet, which after cooling down to cryogenic temperatures lowers…