PROPERTIES OF HIGH CURRENT SUPERCONDUCTING MAGNET COILS
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Pagination or Media Count:
In connection with the fabrication of an adiabatic demagnetization cooling device, the properties of some high current superconducting magnet coils have been studied. This thesis includes investigations of critical current vs. magnetic field for Nb3Zr coils wound with several packing fractions. The coils were wound bifilar in order that conditions of zero net field could be studied, as well as the properties of single and multiple layers of windings. The problems of connections to the NbeZr wire and the thermal expansion of the wire were investigated. An experiment was conducted to determine the optimum size current lead for various currents. A design is presented for a magnetic cooling device utilizing the magnet. Techniques have been developed for growing large single crystals or ferric ammonium sulfate alum for use with the device.
- Electrical and Electronic Equipment