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1. 发明申请

US20210154495A1 PARTICLE THERAPY SYSTEM 有权
公开(公告)号：US20210154495A1
公开(公告)日：2021-05-27
申请号：US17048639
申请日：2019-04-11
申请人： HITACHI, LTD. , NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY
发明人： Yusuke FUJII , Ryuya ANDO , Manabu AOKI , Kikuo UMEGAKI , Shinichi SHIMIZU , Taeko MATSUURA , Hiroki SHIRATO
IPC分类号： A61N5/10
摘要： A particle therapy system includes an accelerator 1 which generates a particle beam for extraction, an irradiation apparatus 21 which irradiates the particle beam to an irradiation target 26, a gantry 18 which rotates together with the irradiation apparatus 21, and an MRI apparatus 50 which rotates together with the gantry 18. The MRI apparatus 50 includes a magnetic circuit composed of an iron core 60 and a plurality of coils 61 serving as a magnetic flux source. The iron core 60 includes two oppositely disposed magnetic poles 63A and 63B, and a return yoke 64 for connecting the magnetic poles 63A and 63B. The magnetic poles 63A, 63B have cavities 65A, 65B. The particle beam passing through the cavity 65A is irradiated to the irradiation target 26.

2. 发明申请

US20220005631A1 SUPERCONDUCTING WIRE, SUPERCONDUCTING COIL USING SAME, AND MRI 有权
公开(公告)号：US20220005631A1
公开(公告)日：2022-01-06
申请号：US17279187
申请日：2019-09-17
申请人： HITACHI, LTD.
发明人： Hideki TANAKA , Takaaki SUZUKI , Motomune KODAMA , Manabu AOKI
IPC分类号： H01B12/04 , H01F6/06 , H01L39/24 , H01L39/14 , G01R33/34
摘要： The present invention addresses a problem of providing an MgB2 wire material having a small reversible bending radius, a superconducting coil using the same, and an MRI without lowering a critical current value and a critical current density of the MgB2 wire material to an extreme. To solve the problem, provided are a superconducting wire having a plurality of MgB2 strands and a first base metal, a superconducting coil using the same, and an MRI, the superconducting wire being characterized in that in a cross section orthogonal to a wire longitudinal direction, a center point of an area surrounded by the plurality of MgB2 strands and a center axis of a cross section of the superconducting wire are disposed in separated positions.

3. 发明申请

US20220355129A1 PARTICLE BEAM THERAPY SYSTEM AND MAGNETIC RESONANCE IMAGING APPARATUS 有权
公开(公告)号：US20220355129A1
公开(公告)日：2022-11-10
申请号：US17760548
申请日：2020-06-24
申请人： HITACHI, LTD.
发明人： Yusuke FUJII , Manabu AOKI , Masumi UMEZAWA
IPC分类号： A61N5/10 , A61B5/055
摘要： The system includes a bed on which an irradiation target is mounted, an irradiation device that irradiates the irradiation target with a particle beam, and a magnetic resonance imaging apparatus that captures an image of an irradiation object and includes a magnet that generates a static magnetic field in an image capturing space in which the irradiation target is disposed, and a yoke disposed outside the image capturing space and through which a magnetic flux of the generated magnetic field passes. The irradiation device 21 is disposed on a back surface side of the yoke when viewed from the image capturing space, and irradiates the irradiation target with the particle beam from a through-hole or gap provided in the yoke. A direction in which the particle beam enters the image capturing space intersects with a direction of a static magnetic field applied to the image capturing space by the magnet.

4. 发明申请

US20160343491A1 SUPERCONDUCTING MAGNET DEVICE 审中-公开
标题翻译：超级磁铁设备
公开(公告)号：US20160343491A1
公开(公告)日：2016-11-24
申请号：US15111620
申请日：2014-01-27
申请人： HITACHI, LTD.
发明人： Akihisa MIYAZOE , Takeshi NAKAYAMA , Manabu AOKI
IPC分类号： H01F6/00 , H01F6/04 , H01F6/06
CPC分类号： H01F6/008 , F17C2250/0443 , G01R33/3815 , H01F6/04 , H01F6/06
摘要： The superconducting magnet device reduces the number of connections within and/or the number of wires leading out of a superconducting coil winding and promptly starts expending the magnetic energy in a superconducting coil operating in a persistent-current mode when the superconducting coil increases in temperature or transitions to normal conductivity. This invention provides a superconducting magnet device that has the following: a superconducting coil connected to an excitation power supply; a persistent-current switch connected to the superconducting coil; a heater that controls the temperature of the persistent-current switch; a current source that is connected in parallel with the persistent-current switch and has a different polarity from the excitation power supply; a driving circuit connected to the heater and the current source; and a signal-inputting means for inputting a signal to the driving circuit. The driving circuit operates the heater and the current source when the signal is inputted thereto.
摘要翻译：超导磁体装置减少了在超导线圈绕组中引出的导线数量和/或数量，并且当超导线圈的温度升高时，及时开始在持续电流模式下工作的超导线圈中耗尽磁能，或转变为正常导电性。本发明提供一种超导磁体装置，其特征在于：具有与励磁电源连接的超导线圈; 连接到超导线圈的持续电流开关; 控制持续电流开关的温度的加热器; 电流源与持续电流开关并联连接，并具有与激励电源不同的极性; 连接到加热器和电流源的驱动电路; 以及用于向驱动电路输入信号的信号输入装置。当输入信号时，驱动电路操作加热器和电流源。

5. 发明申请

US20160268028A1 SUPERCONDUCTING MAGNET 有权
标题翻译：超级磁铁
公开(公告)号：US20160268028A1
公开(公告)日：2016-09-15
申请号：US15032766
申请日：2013-11-15
申请人： HITACHI, LTD.
发明人： Akihisa MIYAZOE , Takeshi NAKAYAMA , Ryuya ANDO , Manabu AOKI
IPC分类号： H01F6/00 , H01F6/06
CPC分类号： H01F6/008 , H01F6/02 , H01F6/06 , H01F6/065
摘要： This superconducting magnet includes: a superconducting coil that is formed by winding a first superconducting wire rod; a second superconducting wire rod, which is disposed by being thermally in contact with and electrically insulated from the superconducting coil, and which has a superconducting transition temperature that is lower than that of the first superconducting wire rod; voltage terminals that are disposed at a plurality of areas of the second superconducting wire rod; a voltmeter connected to the voltage terminals; and a switch circuit connected to the voltmeter. The switch circuit interrupts a current when receiving an output from the voltmeter, the current being one that is to be supplied to the superconducting coil.
摘要翻译：该超导磁体包括：通过缠绕第一超导线材而形成的超导线圈; 第二超导线材，其通过与超导线圈热接触和电绝缘而设置，并且具有低于第一超导线材的超导转变温度; 电压端子，其设置在所述第二超导线材的多个区域; 连接到电压端子的电压表; 以及与电压表连接的开关电路。当接收到电压表的输出时，开关电路中断电流，电流是供给超导线圈的电流。

6. 发明申请

US20160341778A1 ALTERNATING CURRENT LOSS MEASURING APPARATUS 有权
标题翻译：替代电流损失测量装置
公开(公告)号：US20160341778A1
公开(公告)日：2016-11-24
申请号：US15140776
申请日：2016-04-28
申请人： Hitachi, Ltd.
发明人： Tatsuhiko KAWAKAMI , Takeshi KAWAMURA , Manabu AOKI , Yukinobu IMAMURA
IPC分类号： G01R31/02
CPC分类号： G01R31/02 , G01R33/1238 , H01L39/00
摘要： An alternating current loss measuring apparatus for superconductors includes a superconductor specimen, a magnetic field applying coil, a radiation shield, a vacuum vessel, first cooling means, and second cooling means. The first cooling means or the second cooling means is provided with a temperature regulating mechanism. The magnetic field applying means and the radiation shield are set to be a first cooling part, whereas the superconductor specimen is set to be a second cooling part, and the first cooling part and the second cooling part are cooled by first and second cooling means, respectively. A high thermal resistance member is disposed between the superconductor specimen and the second cooling means, and temperature measuring means are disposed at at least two positions on the high thermal resistance member. The alternating current loss of a superconductor under an external magnetic field can be measured at each of different temperatures.
摘要翻译：一种用于超导体的交流损耗测量装置包括超导体样本，磁场施加线圈，辐射屏蔽，真空容器，第一冷却装置和第二冷却装置。第一冷却装置或第二冷却装置设置有温度调节机构。磁场施加装置和辐射屏蔽被设置为第一冷却部分，而超导体试样被设定为第二冷却部分，第一冷却部分和第二冷却部分由第一和第二冷却装置冷却，分别。在超导体试样和第二冷却装置之间配置有高耐热性构件，在高耐热构件的至少两个位置配置有温度测定单元。超导体在外部磁场下的交流损耗可以在不同的温度下测量。

7. 发明申请

US20150111753A1 SUPERCONDUCTING MAGNET APPARATUS 审中-公开
标题翻译：超级磁铁设备
公开(公告)号：US20150111753A1
公开(公告)日：2015-04-23
申请号：US14513710
申请日：2014-10-14
申请人： Hitachi, Ltd.
发明人： Ryoji NAKAGAWA , Ryuya ANDO , Manabu AOKI
IPC分类号： H01F6/04 , H01F27/28 , H01F6/02 , H01F6/06
CPC分类号： H01F6/04 , H01F6/02
摘要： A superconducting magnet apparatus is provided, which comprises a superconducting coil, an induction coil to be in inductive coupling with the superconducting coil, a first refrigerant vessel charged with a first refrigerant in which the superconducting coil is installed; and a second refrigerant vessel charged with a second refrigerant having a melting temperature higher than or a boiling temperature higher than a boiling temperature of the first refrigerant, the second refrigerant vessel in which the induction coil is installed, wherein the second refrigerant vessel is thermally isolated from the first refrigerant vessel.
摘要翻译：提供一种超导磁体装置，其包括超导线圈，与超导线圈感应耦合的感应线圈，装有超导线圈的第一制冷剂的第一制冷剂容器; 以及第二制冷剂容器，该第二制冷剂容器具有比第一制冷剂的沸点高于或沸点的第二制冷剂，其中安装有感应线圈的第二制冷剂容器，其中第二制冷剂容器是热隔离的从第一制冷剂容器。

8. 发明申请

US20210333341A1 OPEN-TYPE MAGNETIC RESONANCE IMAGING APPARATUS 有权
公开(公告)号：US20210333341A1
公开(公告)日：2021-10-28
申请号：US17195796
申请日：2021-03-09
申请人： HITACHI, LTD.
发明人： Taisuke TAKAYANAGI , Manabu AOKI , Yukinobu IMAMURA , Hiroyuki TAKEUCHI
IPC分类号： G01R33/385 , G01R33/421 , G01R33/30 , G01R33/3875
摘要： An open-type MRI apparatus includes a pair of static magnetic field magnets and a pair of gradient magnetic field coils. Each static magnetic field magnet includes a discoid magnetic pole configured to generate a static magnetic field in a Z axis direction in which the pair of static magnetic field magnets are opposed each other, and an annular magnetic pole configured to generate a static magnetic field on an X-Y plane perpendicular to the Z axis direction. Each gradient magnetic field coil includes a Z coil configured to provide a magnetic field being gradient in the Z axis direction in the imaging region, a magnetic material block configured to shield the discoid magnetic pole from a magnetic flux generated from the Z coil, and a correction coil configured to shield the annular magnetic pole from the magnetic flux generated from the Z coil.

9. 发明申请

US20140357491A1 SUPERCONDUCTING MAGNET APPARATUS 有权
标题翻译：超级磁铁设备
公开(公告)号：US20140357491A1
公开(公告)日：2014-12-04
申请号：US13899673
申请日：2013-05-22
申请人： HITACHI, LTD.
发明人： Ryoji NAKAGAWA , Ryuya ANDO , Manabu AOKI
IPC分类号： H01F6/06 , H01F6/04
CPC分类号： H01F6/06 , H01F6/04
摘要： A superconducting magnet apparatus includes: a bobbin around which a superconducting coil is wound, the bobbin serving as a protective resistor; a persistent current switch for supplying a persistent current to the superconducting coil; a first closed circuit with the superconducting coil and the persistent current switch connected in series to the coil; and a second closed circuit with the superconducting coil and the bobbin connected in series to the coil.
摘要翻译：一种超导磁体装置，包括：卷绕有超导线圈的线轴，所述线轴用作保护电阻; 用于向超导线圈提供持续电流的持续电流开关; 具有与线圈串联连接的超导线圈和持续电流开关的第一闭合电路; 以及第二闭合电路，其中超导线圈和线圈与线圈串联连接。

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