公开(公告)号：EP1340456A4

公开(公告)日：2005-11-09

申请号：EP01271111

申请日：2001-12-04

申请人： HITACHI LTD ,  HITACHI MEDICAL CORP

发明人： KAKUGAWA SHIGERU ,  AZUMA KATSUNORI ,  WAKUDA TSUYOSHI ,  WADAYAMA YOSHIHIDE ,  TAKESHIMA HIROTAKA ,  SAKAKIBARA KENJI ,  YATSUO TAKESHI ,  HONMEI TAKAO

IPC分类号： G01R33/38 ,  G01R33/3815 ,  G01R33/421 ,  A61B5/055

CPC分类号： G01R33/421 ,  G01R33/3806 ,  G01R33/3815

摘要： A magnet device provided with a shield current carrying means in which two sets of magneto static field generating sources for generating magnetic fields directed toward a first direction are disposed facing each other across a finite region and at least one set of the magnetostatic field generating sources are disposed on at least two almost concentric circles, wherein, on a first plane including a first axis, a second axis and a first point, the first point being a point of intersection between the first axis parallel to the first direction and passing the almost center of the shied current carrying means and the second axis crossing at right angles the first axis and spaced an almost equal distance from the two sets of the generating sources, positive and negative current carrying directions of one set out of two sets of magnetostatic field generating sources or those in respective sets are arranged alternately, when an angle formed by a half line at the n-th point position from the first point to extend toward the geometric center of a section of the shield current carrying means and the first axis is theta n, and the current carrying directions of the shield current carrying means are set in the order of increasing theta n.

公开(公告)号：EP3086380A4

公开(公告)日：2017-08-23

申请号：EP13899826

申请日：2013-12-20

申请人： HITACHI LTD

发明人： TANAKA HIDEKI ,  WAKUDA TSUYOSHI

IPC分类号： H01F6/00 ,  H01L39/20

CPC分类号： H01L39/10 ,  G01R33/3815 ,  H01F6/008 ,  H01L39/02 ,  H01L39/20 ,  H02H1/0007 ,  H02H7/001

摘要： An object of the present invention is to provide a persistent current switch with high heating efficiency by simplifying the configuration of the persistent current switch and reducing the heat capacity. To achieve the object, a superconducting magnet in accordance with the present invention includes a superconducting coil, a persistent current switch, and one of an alternating-current power supply, a pulsed power supply, or a charge/discharge circuit. The one of the alternating-current power supply, the pulsed power supply, or the charge/discharge circuit is connected to a loop circuit of the superconducting coil and the persistent current switch such that it is in parallel with the persistent current switch.

摘要翻译： 本发明的目的是通过简化持续电流开关的配置并降低热容量来提供具有高加热效率的持续电流开关。 为了实现该目的，根据本发明的超导磁体包括超导线圈，持续电流开关以及交流电源，脉冲电源或充电/放电电路中的一个。 交流电源，脉冲电源或充电/放电电路中的一个连接到超导线圈和持续电流开关的环路，使得其与持续电流开关并联。