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1. 发明授权

US11415647B2 Magnetic field generator and nuclear magnetic resonance apparatus 有权
公开(公告)号：US11415647B2
公开(公告)日：2022-08-16
申请号：US16738072
申请日：2020-01-09
申请人： AISIN SEIKI KABUSHIKI KAISHA , JEOL Ltd.
发明人： Yosuke Yanagi , Yoshitaka Ito , Takashi Nakamura , Hiroaki Utsumi
IPC分类号： G01R33/00 , G01R33/34 , G01R33/38 , G01R33/3815 , H01F6/04 , H01F5/00
摘要： A magnetic field generator includes a refrigerating machine, a cold head, a superconductor which is formed in a cylindrical shape, a cold head extension portion which extends from the cold head and is brought into thermal contact with the superconductor at its extended end; and a vacuum heat insulating container having an internal space in which the cold head, the cold head extension portion, and the superconductor are received. The superconductor has a room temperature bore space, which is formed on its inner peripheral side along an axial direction of the superconductor, and is spatially isolated from the internal space of the vacuum heat insulating container. The room temperature bore space has both ends communicating to an outside of the magnetic field generator.

2. 发明申请

US20200225300A1 MAGNETIC FIELD GENERATOR AND NUCLEAR MAGNETIC RESONANCE APPARATUS 审中-公开
公开(公告)号：US20200225300A1
公开(公告)日：2020-07-16
申请号：US16738072
申请日：2020-01-09
申请人： AISIN SEIKI KABUSHIKI KAISHA , JEOL Ltd.
发明人： Yosuke Yanagi , Yoshitaka Ito , Takashi Nakamura , Hiroaki Utsumi
IPC分类号： G01R33/34 , G01R33/3815 , H01F6/04 , G01R33/38
摘要： A magnetic field generator includes a refrigerating machine, a cold head, a superconductor which is formed in a cylindrical shape, a cold head extension portion which extends from the cold head and is brought into thermal contact with the superconductor at its extended end; and a vacuum heat insulating container having an internal space in which the cold head, the cold head extension portion, and the superconductor are received. The superconductor has a room temperature bore space, which is formed on its inner peripheral side along an axial direction of the superconductor, and is spatially isolated from the internal space of the vacuum heat insulating container. The room temperature bore space has both ends communicating to an outside of the magnetic field generator.

3. 发明授权

US09564262B2 Superconducting magnetic field generating device, superconducting magnetic field generating method, and nuclear magnetic resonance apparatus 有权
标题翻译：超导磁场产生装置，超导磁场产生方法和核磁共振装置
公开(公告)号：US09564262B2
公开(公告)日：2017-02-07
申请号：US14743338
申请日：2015-06-18
申请人： AISIN SEIKI KABUSHIKI KAISHA
发明人： Yoshitaka Ito , Yousuke Yanagi , Masaaki Yoshikawa
IPC分类号： H01F6/00 , H01F6/04 , G01R33/3815 , G01R33/387
CPC分类号： H01F6/04 , G01R33/3815 , G01R33/387 , H01F6/06
摘要： A superconducting magnetic field generating device includes: a superconductor including an outer superconductor formed with a high temperature superconducting material in a cylindrical shape and generating a trapped magnetic field, and an inner superconductor formed with a high temperature superconducting material in a cylindrical shape and coaxially disposed with the outer superconductor on the inner circumferential side; and a cooling device cooling the outer and inner superconductors to a temperature equal to or lower than the superconducting transition temperature, wherein the inner superconductor is formed so that a ratio (Jcθ1/Jcz1) of a critical current density (Jcθ1) of the inner superconductor in the circumferential direction to a critical current density (Jcz1) of the inner superconductor in the axial direction is closer to 1 than a ratio (Jcθ2/Jcz2) of the critical current density (Jcθ2) in the circumferential direction to a critical current density (Jcz2) of the outer superconductor of the outer superconductor in the axial direction.
摘要翻译：超导磁场产生装置包括：超导体，包括由圆柱形形状的高温超导材料形成的外超导体，并产生被俘获的磁场;以及内部超导体，其形成为圆柱形状并同轴设置的高温超导材料外超导体在内周侧; 以及将所述外超导体和所述超导体冷却至等于或低于所述超导转变温度的温度的冷却装置，其中形成所述内超导体，使得所述内超导体的临界电流密度（Jcθ1）与所述内超导体的比（Jcθ1/ Jcz1）沿圆周方向的内超导体的临界电流密度（Jcz1）比周向的临界电流密度（Jcθ2）与临界电流密度（Jcθ2）的比值（Jcθ2/ Jcz2）更接近1 外部超导体的外部超导体的轴向方向的Jcz2）。

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