Abstract
A conduction-cooled superconducting magnet system with an operating current of 105.5 A was designed, fabricated and tested for material processing applications. The magnet consists of two coaxial NbTi solenoid coils with an identical vertical height of 300 mm and is installed in a high-vacuumed cryostat. A two-stage GM cryocooler with a cooling power of 1.5 W at 4.2 K in the second stage is used to cool the system from room temperature to 4.2 K. In this paper, the detailed design, fabrication, thermal analysis and tests of the system are presented.
Highlights
Many research areas have benefited from the application of high field superconducting magnets
Magnetic field effects have recently been observed for material, chemical, and biological systems [1], [2]
A high field magnet system with a wide warm bore is convenient for researchers to carry out material processing experiments, because it provides enough space to install samples, as well as the cooling, heating and monitoring systems [3]
Summary
Many research areas have benefited from the application of high field superconducting magnets. A high field magnet system with a wide warm bore is convenient for researchers to carry out material processing experiments, because it provides enough space to install samples, as well as the cooling, heating and monitoring systems [3]. M. first demonstrated a thermal design of the conduction-cooled superconducting magnet combined with GM cryocoolers [6]. The development of high-temperature superconductors, along with the progress of cryocoolers, has enabled large-scale applications of conduction-cooled superconducting magnets [7]. A conduction-cooled superconducting magnet system was designed, fabricated and tested for material processing applications in the Applied Superconductivity Laboratory, Institute of Electrical Engineering, Chinese Academy of Sciences (IEE, CAS). The apparatus is installed in a vacuum vessel and suspended by G-10 supporting rods
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