Method of three-dimensional optimization design for asymmetric cusp magnetic field in MCZ single crystal furnace

摘要

A method of three-dimensional optimization design for an asymmetric cusp magnetic field in an MCZ single crystal furnace is disclosed. An optimization design for structural parameters of the magnetic field includes first establishing a three-dimensional magnetic model by using ANSYS software, varying parameters of the model, determining a span between upper and lower parts of coils, determining a number of transverse turns of the coils and the thickness of a shield. An optimization design for specification parameters of the coils of the magnetic field includes determining a relationship between heat and specification parameters of the coils and between heat transfer of the coils at their copper pipe walls and the specification parameters of the coils, analyzing heat absorbed by cooling water, establishing an optimization model of a system, and optimizing the specification parameters of the coils of the magnetic field using the ANSYS software.