Superconducting magnet, magnetic control single crystal pulling equipment and control method

• Main Authors: MA PENG, LI CHAO, LIU WEI, GE ZHENGFU, LAN XIANHUI, YANG ZHANFENG, HAN ZHICHEN, ZHANG CHI, WANG JIANBIN, ZHOU TAO
• Format: Patent
• Language: Chinese; English
• Published: 22.09.2023
• Subjects: AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CRYSTAL GROWTH; ELECTRICITY; INDUCTANCES; MAGNETS; METALLURGY; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; REFINING BY ZONE-MELTING OF MATERIAL; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE; SINGLE-CRYSTAL-GROWTH; TRANSFORMERS; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL

The invention discloses a superconducting magnet, magnetic control single crystal pulling equipment and a control method, and the superconducting magnet comprises a superconducting coil which comprises two independent coil parts; the cold shield is arranged outside the superconducting coil; the magnetic shielding iron yoke is arranged outside the cold shield; the vacuum Dewar inner barrel is arranged outside the cold shield; the refrigerating machine is arranged on the outer side face of the magnetic shielding iron yoke, and the refrigerating machine is in cold conduction connection with the superconducting coil and the cold shield; the number of the current leads is one group, and one group of the current leads is electrically connected with the two coil parts respectively; and the superconducting power supply is electrically connected with the current lead, and after the connection relationship between the current lead and the coil parts is changed, the superconducting power supply inputs excitation current