公开(公告)号：US10757799B2

公开(公告)日：2020-08-25

申请号：US16604316

申请日：2018-03-06

申请人： HITACHI, LTD.

发明人： Chishin Hori ,  Takamichi Aoki

IPC分类号： H05H13/00 ,  H05H7/04 ,  G21K5/04 ,  A61N5/10

摘要： A magnet device that includes upper and lower disk-shaped return yokes, a pair of upper magnetic pole and lower magnetic pole respectively fixed to a disk-shaped surface of the upper return yoke and a disk-shaped surface of the lower return yoke, in which a space to circulate and accelerate an ion beam is formed between the upper magnetic pole and the lower magnetic pole. The upper magnetic pole and the lower magnetic pole have a plurality of concave and convex parts along a track along which the ion beam circulates, are plane-symmetrical with respect to a horizontal symmetry plane formed by the track along which an ion beam circulates, and are plane-symmetrical to one of the vertical planes vertical to the horizontal symmetry plane. Also, the magnetic pole intervals between the concave parts of the upper magnetic pole and the lower magnetic pole are different from each other.

公开(公告)号：US11291105B2

公开(公告)日：2022-03-29

申请号：US17042398

申请日：2019-02-13

申请人： HITACHI, LTD.

发明人： Chishin Hori ,  Takayoshi Seki

IPC分类号： H05H13/02 ,  A61N5/10 ,  H05H7/04

摘要： In a magnetic device 1, on faces opposite to a middle plane 2 between an upper magnetic pole 8 and a lower magnetic pole 9, recesses 21a, 21b, 21c, and 21d and projections 22a, 22b, 22c, and 22d are alternately placed along a beam circling direction. In the projections 22a, 22b, 22c, and 22d, angle widths θ of the projections 22a, 22b, 22c, and 22d when viewed from the center O1 of a beam closed orbit is narrowed as beam energy is increased. On the outer circumferential region of the recess 21a on the upper magnetic pole 8 and the lower magnetic pole 9, the inlet of an extraction channel 1019 that extracts a beam accelerated to a predetermined energy to outside an accelerator 1004 is provided.

公开(公告)号：US20160225504A1

公开(公告)日：2016-08-04

申请号：US15002491

申请日：2016-01-21

申请人： HITACHI, LTD.

发明人： Chishin Hori ,  Manabu Aoki ,  Akihisa Miyazoe ,  Yukinobu Imamura

IPC分类号： H01F6/06 ,  A61B5/055 ,  G01R33/38 ,  G01R33/30 ,  G01R33/3815

CPC分类号： H01F6/06 ,  A61B5/055 ,  A61B5/0555 ,  G01R33/3804 ,  G01R33/3815 ,  H01F6/04

摘要： A superconducting magnet in which efficiency of conduction cooling is improved is described as well as a magnetic resonance imaging apparatus that includes the superconducting magnet and requires no liquid helium. The magnet resonance imaging apparatus includes: a coil portion including a winding core, a winding portion formed by winding a wire around the winding core, a first flange provided on one side of the winding core, and a second flange provided on the other side of the winding core; a cooling device for cooling the coil portion; and a heat conducting member for thermally connecting the coil portion and the cooling device, in which at least one of the first flange, the second flange, and the winding core has a region made of a material whose thermal contraction rate is larger than a thermal contraction rate of the winding portion.

摘要翻译： 描述了提高传导冷却效率的超导磁体以及包括超导磁体并且不需要液氦的磁共振成像装置。 磁体共振成像装置包括：线圈部分，其包括绕组芯，通过绕线缠绕线形成的绕组部分，设置在绕组芯的一侧上的第一凸缘和设置在绕组芯的另一侧上的第二凸缘 卷芯; 用于冷却线圈部分的冷却装置; 以及用于热连接线圈部分和冷却装置的导热构件，其中第一凸缘，第二凸缘和卷绕芯中的至少一个具有由热收缩率大于热的材料制成的区域 卷绕部的收缩率。