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The design activities coupled with conductor and model coil developments are described, which are used for developing a curved fast cycled superconducting dipole suitable for operations of the SIS300 synchrotron at FAIR. The crucial aspects related to the research and development has included the development of low loss conductor and the demonstration that the heat dissipated in the winding is removed through the cooling of the dipole under surface.

The article studies the performance of a 14 cm bore solenoid wound with 400 meters of multifilament copper stabilized tape. Results suggest that the magnet reaches 175 A at 16 K with a central magnetic flux density of 1 Tesla.

Magnesium diboride (MgB2) pancake coils and selenoids are constructed and tested. The discovery of the superconducting properties of magnesium diboride has renewed the interest toward the technological applications of superconductors.

The feasibility of a conduction-cooled \MgB2 -based superconducting fault-current limiter with fast recovery is investigated. A real-scale device for a distribution network is considered. The dc resistive configuration is chosen in order to avoid ac losses and to allow conduction cooling. A high-heat-capacity cable is specifically developed in order to cope with the requirement of fast recovery. A short-length sample of the cable is manufactured in order to assess its feasibility. The detailed design of a prototype is also carried out, and the performance is numerically investigated. [ABSTRACT FROM PUBLISHER]

Feasibility of industrial production of MgB2 cables and magnets has been established, thus leading to MRI systems realization. Apart from continuing the development in performances of both cable and magnet, a further important step consists in applying superconductive junctions to windings, to obtain a better field stability. In 2006 a technique to obtain some tens of Ampere in persistent mode operation in a joined MgB2 cable was found. Since then, short windings were repetitively built to test the progress of the performances of the junctions. Among them, a single junction, five meter long windings with a diameter of 260 millimeter were put in persistent mode (i.e. with total resistance less than 10-14 Ohm) with 300 Ampere circulating at 20 Kelvin, self-field; also windings with two junctions and about one meter long with the same diameter were put in persistent mode with 200 Ampere circulating at 20 Kelvin, self-field. [ABSTRACT FROM AUTHOR]

In the frame of a research and development project named LIMSAT several MgB2 tapes and windings were fabricated and tested in DC and AC current regime. All technical aspects related to the choice of the MgB2 tape layout as well as the winding technology and insulation will be reported. Different tape layout and insulating technique were used for the different windings, in particular several lengths of MgB2 multifilamentary Cu-stabilized Ni-sheathed tape. Critical current measurements on short samples of the tape used, performed in a cryogenic-free test facility, showed currents over 250 A at 20K, 1 T. Five non inductive MgB2 windings were made using lengths from about 35 to 130 m and tested in liquid He and liquid Ne. The results from electrical DC and AC tests are reported and discussed. [ABSTRACT FROM AUTHOR]

The properties of MgB2 have the potential to make this material a viable solution for applications in which temperature, costs or weight are considered relevant constraints. In order to realize large scale applications, it is important to investigate the material, but also the winding process for MgB2 wires and tapes. In the literature small coils have already demonstrated central magnetic flux density above 2 Tesla, overcoming common winding problems related to MgB2 wires. In this current research, efforts are being made in order to improve the performance of solenoid coils, which are of particular interest for many applications, e.g. for space propulsion systems such as the VASIMR engine. A number of coils with MgB2 tapes are being built. In this paper we present results of the test of a 14 cm bore solenoid wound with 400 meters of multifilament, copper stabilized tape. The magnet was tested in a cryocooled vacuum chamber and it reached 175 A at 16 K with a central B0 of 1 Tesla. [ABSTRACT FROM AUTHOR]

Magnesium diboride (Mg2) pancake coils and solenoids have been constructed and tested. The magnets have been wound using the react & winding technique. The magnets have been tested in liquid helium bath up to the quench current In the paper the coils and their behavior are discussed. [ABSTRACT FROM AUTHOR]