Development of portable superconducting bulk magnet system
| Autor: | Akira Sasaki, Norihide Saho, N. Nishijima, Hiroyuki Tanaka |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Electromagnet Electropermanent magnet Condensed matter physics Energy Engineering and Power Technology Superconducting magnet Superconducting magnetic energy storage Condensed Matter Physics Magnetic flux Electronic Optical and Magnetic Materials law.invention law Dipole magnet Magnet Electrical and Electronic Engineering Single domain |
| Zdroj: | Physica C: Superconductivity. 469:1286-1289 |
| ISSN: | 0921-4534 |
| Popis: | Recently a magnetic drug delivery system (MDDS) has been developing to navigate magnetic seeded drugs around diseased parts of the human body. To improve the magnetic drug delivery performance, a portable high temperature superconducting (HTS) bulk magnet system with high magnetic fields has been developed. This magnet system mainly consists of small bulk high temperature superconductors and a compact cryocooler. The materials of the high temperature superconductor are rare earth 123 single domain compounds (Gd–Ba–Cu–O). The bulk magnet was activated successfully using field-cooling magnetization under the superconducting solenoid magnet. The magnetic flux densities at the surface of the vacuum chambers that contain bulk magnets reached 5.07 T and 6.76 T using the static magnetic fields of 6 T and 10 T superconducting solenoid magnets, respectively. A cryocooler cooled them to 38.1 K and 39.1 K. It was clarified that the magnetic gradient was approximately 10 T/m at a position located 50 mm from the surface of the vacuum chambers. |
| Databáze: | OpenAIRE |
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