Superconducting magnet coil system with quench protection for the prevention of excessive localized currents
    1.
    发明申请
    Superconducting magnet coil system with quench protection for the prevention of excessive localized currents 有权
    具有淬火保护功能的超导磁体线圈系统,可防止过大的局部电流

    公开(公告)号:US20110065584A1

    公开(公告)日:2011-03-17

    申请号:US12923087

    申请日:2010-09-01

    摘要: A superconducting high-field magnet coil system comprising several radially nested main coil sections (1, 2, 3, 4, 5) which are connected to each other in series in such a fashion that currents of the same direction flow through them during operation, wherein a first main coil section (EHS) is disposed radially further inward than a second main coil section (ZHS) and at least one intermediate main coil section (ZW) is disposed radially between the first and the second main coil section (EHS, ZHS), and with a superconducting switch (11) via which all main coil sections (1, 2, 3, 4, 5) can be superconductingly short-circuited in series, is characterized in that the first main coil section (EHS) and the second main coil section (ZHS) are directly successively series-connected and the first main coil section (EHS) and the second main coil section (ZHS) are bridged by a common quench protection element, which does not bridge the at least one intermediate main coil section (ZW). The magnet coil system realizes quench protection for selectively preventing excess currents in magnet coil areas in which the excessive mechanical force load associated with an excess current would damage the superconductor.

    摘要翻译: 一种超导高场磁体线圈系统,包括若干径向嵌套的主线圈段(1,2,3,4,5),它们以相同方向的电流在操作期间流过它们的方式相互串联连接, 其特征在于,第一主线圈部(EHS)比第二主线圈部(ZHS)更靠内侧配置,并且至少一个中间主线圈部(ZW)沿径向配置在第一和第二主线圈部(EHS,ZHS )和超导开关(11),其中所有主线圈段(1,2,3,4,5)可以串联超导短路,其特征在于,第一主线圈段(EHS)和 第二主线圈段(ZHS)直接连续串联,并且第一主线圈段(EHS)和第二主线圈段(ZHS)由通用的骤冷保护元件桥接,该桥接器不桥接至少一个中间主体 线圈段(ZW)。 电磁线圈系统实现淬火保护,以选择性地防止电磁线圈区域中的过剩电流,其中与过电流相关联的过大的机械力负载将损坏超导体。

    Superconducting magnet coil system with quench protection for the prevention of excessive localized currents
    2.
    发明授权
    Superconducting magnet coil system with quench protection for the prevention of excessive localized currents 有权
    具有淬火保护功能的超导磁体线圈系统,可防止过大的局部电流

    公开(公告)号:US08467841B2

    公开(公告)日:2013-06-18

    申请号:US12923087

    申请日:2010-09-01

    IPC分类号: H01F6/02 H01L39/08 G01R33/035

    摘要: A superconducting high-field magnet coil system comprising several radially nested main coil sections (1, 2, 3, 4, 5) which are connected to each other in series in such a fashion that currents of the same direction flow through them during operation, wherein a first main coil section (EHS) is disposed radially further inward than a second main coil section (ZHS) and at least one intermediate main coil section (ZW) is disposed radially between the first and the second main coil section (EHS, ZHS), and with a superconducting switch (11) via which all main coil sections (1, 2, 3, 4, 5) can be superconductingly short-circuited in series, is characterized in that the first main coil section (EHS) and the second main coil section (ZHS) are directly successively series-connected and the first main coil section (EHS) and the second main coil section (ZHS) are bridged by a common quench protection element, which does not bridge the at least one intermediate main coil section (ZW). The magnet coil system realizes quench protection for selectively preventing excess currents in magnet coil areas in which the excessive mechanical force load associated with an excess current would damage the superconductor.

    摘要翻译: 一种超导高场磁体线圈系统,包括若干径向嵌套的主线圈段(1,2,3,4,5),它们以相同方向的电流在操作期间流过它们的方式相互串联连接, 其特征在于,第一主线圈部(EHS)比第二主线圈部(ZHS)更靠内侧配置,并且至少一个中间主线圈部(ZW)沿径向配置在第一和第二主线圈部(EHS,ZHS )和超导开关(11),其中所有主线圈段(1,2,3,4,5)可以串联超导短路,其特征在于,第一主线圈段(EHS)和 第二主线圈段(ZHS)直接连续串联,并且第一主线圈段(EHS)和第二主线圈段(ZHS)由通用的骤冷保护元件桥接,该桥接器不桥接至少一个中间主体 线圈段(ZW)。 电磁线圈系统实现淬火保护,以选择性地防止电磁线圈区域中的过剩电流,其中与过电流相关联的过大的机械力负载将损坏超导体。

    Integral passive shim system for a magnetic resonance apparatus
    3.
    发明授权
    Integral passive shim system for a magnetic resonance apparatus 有权
    用于磁共振设备的整体被动垫片系统

    公开(公告)号:US06897750B2

    公开(公告)日:2005-05-24

    申请号:US10108500

    申请日:2002-03-29

    申请人: Gerald Neuberth

    发明人: Gerald Neuberth

    IPC分类号: G01R33/3873 H01F7/02 H01F1/00

    CPC分类号: H01F7/0278 G01R33/3873

    摘要: In an arrangement for adjusting the spatial dependence of a magnetic field in a working volume of a main field magnet (19) by means of ferromagnetic field shaping elements (16), the field shaping elements (16) are formed from foils (1, 5, 7, 8) and/or sheet metals (10) having openings (2, 3) whose shape, position and size are selected such that the shape and the amount of the remaining ferromagnetic material produces a desired spatial dependence of the magnetic field in the working volume of the main field magnet for appropriate positioning of the foils (1, 5, 7, 8) and/or sheet metals (10) relative to the working volume of the main field magnet.

    摘要翻译: 在通过铁磁场成形元件(16)调整主磁场(19)的工作体积中的磁场的空间依赖性的装置中,场成形元件(16)由箔(1,5)形成 ,7,8)和/或具有开口(2,3)的金属片(10),其形状,位置和尺寸被选择为使得剩余的铁磁材料的形状和量产生磁场的期望的空间依赖性 用于相对于主场磁体的工作体积适当地定位箔(1,5,7,8)和/或金属片(10)的主场磁体的工作容积。

    Compact superconducting magnet configuration with active shielding having a shielding coil contributing to field formation

    公开(公告)号:US08222985B2

    公开(公告)日:2012-07-17

    申请号:US12923956

    申请日:2010-10-18

    IPC分类号: G01R33/421 G01V3/00

    摘要: A superconducting magnet configuration (4; 14) for generating a homogeneous magnetic field B0 in an examination volume (4b), has an interior radial superconducting main field coil (1) which is disposed rotationally symmetrically about an axis (z-axis) and an oppositely driven coaxial radially exterior superconducting shielding coil (2) is characterized in that the magnet configuration (4; 14) consists of the main field coil (1), the shielding coil (2), a ferromagnetic field formation device (3; 18) and a ferromagnetic shielding body (AK), wherein the ferromagnetic field formation device (3; 18) is located at the radially inside of the main field coil (1) and the ferromagnetic shielding device (AK) surrounds the main field coil (1) and the shielding coil (2) in a radial and axial direction, the main field coil (1) consisting of an unstructured solenoid coil or of several radially nested unstructured solenoid coils (15, 16) which are driven in the same direction, the axial extent Labs of the shielding coil (2) being smaller than the axial extent Lhaupt of the main field coil (1), wherein the axial magnetic field profile (5) generated by the main field coil (1) and the shielding coil (2) during operation has a minimum of the field strength along the axis (z-axis) in the center (4a) and a maximum of the field strength on each side of the center (4a), and wherein the axial magnetic field profile (6) generated by the ferromagnetic field formation device (3; 18) and the ferromagnetic shielding body (AK) during operation has a maximum of the field strength along the axis (z-axis) in the center (4a) and a minimum of the field strength on each side of the center (4a). The magnet configuration in accordance with the invention has a very simple structure.

    Compact superconducting magnet configuration with active shielding having a shielding coil contributing to field formation
    5.
    发明申请
    Compact superconducting magnet configuration with active shielding having a shielding coil contributing to field formation 有权
    紧凑型超导磁体配置,主动屏蔽具有一个有助于场形成的屏蔽线圈

    公开(公告)号:US20090261246A1

    公开(公告)日:2009-10-22

    申请号:US12385684

    申请日:2009-04-16

    摘要: A superconducting magnet configuration (4; 14) for generating a homogeneous magnetic field B0 in an examination volume (4b), has an interior radial superconducting main field coil (1) which is disposed rotationally symmetrically about an axis (z-axis) and an oppositely driven coaxial radially exterior superconducting shielding coil (2) is characterized in that the magnet configuration (4; 14) consists of the main field coil (1), the shielding coil (2), and a ferromagnetic field formation device (3; 18), wherein the ferromagnetic field formation device (3; 18) is located at the radially inside of the main field coil (1), the main field coil (1) consisting of an unstructured solenoid coil or of several radially nested unstructured solenoid coils (15, 16) which are driven in the same direction, the axial extent Labs of the shielding coil (2) being smaller than the axial extent Lhaupt of the main field coil (1), wherein the axial magnetic field profile (5) generated by the main field coil (1) and the shielding coil (2) during operation has a minimum of the field strength along the axis (z-axis) in the center (4a) and a maximum of the field strength on each side of the center (4a), and wherein the axial magnetic field profile (6) generated by the ferromagnetic field formation device (3; 18) during operation has a maximum of the field strength along the axis (z-axis) in the center (4a) and a minimum of the field strength on each side of the center (4a). The magnet configuration in accordance with the invention has a very simple structure.

    摘要翻译: 用于在检查体积(4b)中产生均匀磁场B0的超导磁体构造(4; 14)具有内径向超导主磁场线圈(1),其围绕轴线(z轴)旋转对称设置,并且 相反驱动的同轴径向外部超导屏蔽线圈(2)的特征在于,磁体构造(4; 14)由主励磁线圈(1),屏蔽线圈(2)和铁磁场形成装置(3; 18) ),其中所述铁磁场形成装置(3; 18)位于所述主励磁线圈(1)的径向内侧,所述主励磁线圈(1)由非结构化电磁线圈或多个径向嵌套的非结构化电磁线圈( 15,16),所述屏蔽线圈(2)的轴向范围实验室小于所述主励磁线圈(1)的轴向范围Lhaupt,其中所述轴向磁场分布(5)由所述主磁场线圈 主场线圈 (1)和屏蔽线圈(2)在中心(4a)处沿着轴线(z轴)具有最小的场强,并且在中心(4a)的每一侧具有最大的场强, 并且其中所述轴向磁场分布(6)由所述铁磁场形成装置(3; 18)在中心(4a)中具有沿着轴线(z轴)的场强的最大值和中心(4a)的每一侧的场强的最小值。 根据本发明的磁体结构具有非常简单的结构。

    Compact superconducting magnet configuration with active shielding having a shielding coil contributing to field formation

    公开(公告)号:US20110084206A1

    公开(公告)日:2011-04-14

    申请号:US12923956

    申请日:2010-10-18

    摘要: A superconducting magnet configuration (4; 14) for generating a homogeneous magnetic field B0 in an examination volume (4b), has an interior radial superconducting main field coil (1) which is disposed rotationally symmetrically about an axis (z-axis) and an oppositely driven coaxial radially exterior superconducting shielding coil (2) is characterized in that the magnet configuration (4; 14) consists of the main field coil (1), the shielding coil (2), a ferromagnetic field formation device (3; 18) and a ferromagnetic shielding body (AK), wherein the ferromagnetic field formation device (3; 18) is located at the radially inside of the main field coil (1) and the ferromagnetic shielding device (AK) surrounds the main field coil (1) and the shielding coil (2) in a radial and axial direction, the main field coil (1) consisting of an unstructured solenoid coil or of several radially nested unstructured solenoid coils (15, 16) which are driven in the same direction, the axial extent Labs of the shielding coil (2) being smaller than the axial extent Lhaupt of the main field coil (1), wherein the axial magnetic field profile (5) generated by the main field coil (1) and the shielding coil (2) during operation has a minimum of the field strength along the axis (z-axis) in the center (4a) and a maximum of the field strength on each side of the center (4a), and wherein the axial magnetic field profile (6) generated by the ferromagnetic field formation device (3; 18) and the ferromagnetic shielding body (AK) during operation has a maximum of the field strength along the axis (z-axis) in the center (4a) and a minimum of the field strength on each side of the center (4a). The magnet configuration in accordance with the invention has a very simple structure.

    Compact superconducting magnet configuration with active shielding, wherein the shielding coil damps the field maximum of the main coil as well as associated magnetic resonance tomograph, NMR spectrometer and ion cyclotron resonance mass spectrometer

    公开(公告)号:US20110080239A1

    公开(公告)日:2011-04-07

    申请号:US12896924

    申请日:2010-10-04

    IPC分类号: H01F6/06 G01R33/44

    CPC分类号: G01R33/3815

    摘要: An actively shielded superconducting magnet configuration (M1; M2; M3; 14) for generating a homogeneous magnetic field B0 in a volume under investigation (4b) has a radially inner superconducting main field coil (1) which is disposed rotationally symmetrically about an axis (z axis) and a coaxial radially outer superconducting shielding coil (2) which is operated in an opposite direction. The magnet configuration consists of the main field coil, the shielding coil and a ferromagnetic field-shaping device (3; 18), wherein the ferromagnetic field-shaping device is disposed radially inside the main field coil. The main field coil consists of an unstructured solenoid coil or of several radially nested unstructured solenoid coils (15, 16) which are operated in the same direction. An extension Labs of the shielding coil in the axial direction is smaller than the extension Lhaupt of the main field coil in the axial direction.  2  z 2  B H + A  ( z )   z = 0  ≤ 0 applies for the axial magnetic field profile BH+A(z) generated by the main field coil and the shielding coil during operation along the z-axis in the center at z=0 and  2  z 2  B F  ( z )   z = 0  ≥ 0 applies for the axial magnetic field profile BF(z) generated by the ferromagnetic field-shaping device (3; 18) during operation along the z-axis in the center at z=0, wherein the z-axis is oriented in a positive direction of the B0-field. An actively shielded superconducting magnet configuration of considerably simplified structure is thereby provided with a homogeneous and particularly high magnetic field B0 in the volume under investigation.

    Compact superconducting magnet configuration with active shielding, wherein the shielding coil damps the field maximum of the main coil as well as associated magnetic resonance tomograph, NMR spectrometer and ion cyclotron resonance mass spectrometer

    公开(公告)号:US08154368B2

    公开(公告)日:2012-04-10

    申请号:US12896924

    申请日:2010-10-04

    IPC分类号: H01F1/00 H01F7/00 H01F6/00

    CPC分类号: G01R33/3815

    摘要: An actively shielded superconducting magnet configuration (M1; M2; M3; 14) for generating a homogeneous magnetic field B0 in a volume under investigation (4b) has a radially inner superconducting main field coil (1) which is disposed rotationally symmetrically about an axis (z axis) and a coaxial radially outer superconducting shielding coil (2) which is operated in an opposite direction. The magnet configuration consists of the main field coil, the shielding coil and a ferromagnetic field-shaping device (3; 18), wherein the ferromagnetic field-shaping device is disposed radially inside the main field coil. The main field coil consists of an unstructured solenoid coil or of several radially nested unstructured solenoid coils (15, 16) which are operated in the same direction. An extension Labs of the shielding coil in the axial direction is smaller than the extension Lhaupt of the main field coil in the axial direction. ⅆ 2 ⅆ z 2 ⁢ B H + A ⁡ ( z ) ⁢ ❘ z = 0 ⁢ ≤ 0 applies for the axial magnetic field profile BH+A(z) generated by the main field coil and the shielding coil during operation along the z-axis in the center at z=0 and ⅆ 2 ⅆ z 2 ⁢ B F ⁡ ( z ) ⁢ ❘ z = 0 ⁢ ≥ 0 applies for the axial magnetic field profile BF(z) generated by the ferromagnetic field-shaping device (3; 18) during operation along the z-axis in the center at z=0, wherein the z-axis is oriented in a positive direction of the B0-field. An actively shielded superconducting magnet configuration of considerably simplified structure is thereby provided with a homogeneous and particularly high magnetic field B0 in the volume under investigation.

    Compact superconducting magnet configuration with active shielding having a shielding coil contributing to field formation
    9.
    发明授权
    Compact superconducting magnet configuration with active shielding having a shielding coil contributing to field formation 有权
    紧凑型超导磁体配置,其主动屏蔽具有有助于场形成的屏蔽线圈

    公开(公告)号:US07898258B2

    公开(公告)日:2011-03-01

    申请号:US12385684

    申请日:2009-04-16

    IPC分类号: G01R33/421 G01V3/00

    摘要: A superconducting magnet configuration (4; 14) for generating a homogeneous magnetic field B0 in an examination volume (4b), has an interior radial superconducting main field coil (1) which is disposed rotationally symmetrically about an axis (z-axis) and an oppositely driven coaxial radially exterior superconducting shielding coil (2) is characterized in that the magnet configuration (4; 14) consists of the main field coil (1), the shielding coil (2), and a ferromagnetic field formation device (3; 18), wherein the ferromagnetic field formation device (3; 18) is located at the radially inside of the main field coil (1), the main field coil (1) consisting of an unstructured solenoid coil or of several radially nested unstructured solenoid coils (15, 16) which are driven in the same direction, the axial extent Labs of the shielding coil (2) being smaller than the axial extent Lhaupt of the main field coil (1), wherein the axial magnetic field profile (5) generated by the main field coil (1) and the shielding coil (2) during operation has a minimum of the field strength along the axis (z-axis) in the center (4a) and a maximum of the field strength on each side of the center (4a), and wherein the axial magnetic field profile (6) generated by the ferromagnetic field formation device (3; 18) during operation has a maximum of the field strength along the axis (z-axis) in the center (4a) and a minimum of the field strength on each side of the center (4a). The magnet configuration in accordance with the invention has a very simple structure.

    摘要翻译: 用于在检查体积(4b)中产生均匀磁场B0的超导磁体构造(4; 14)具有内径向超导主磁场线圈(1),其围绕轴线(z轴)旋转对称设置,并且 相反驱动的同轴径向外部超导屏蔽线圈(2)的特征在于,磁体构造(4; 14)由主励磁线圈(1),屏蔽线圈(2)和铁磁场形成装置(3; 18) ),其中所述铁磁场形成装置(3; 18)位于所述主励磁线圈(1)的径向内侧,所述主励磁线圈(1)由非结构化电磁线圈或多个径向嵌套的非结构化电磁线圈( 15,16),所述屏蔽线圈(2)的轴向范围实验室小于所述主励磁线圈(1)的轴向范围Lhaupt,其中所述轴向磁场分布(5)由所述主磁场线圈 主场线圈 (1)和屏蔽线圈(2)在中心(4a)处沿着轴线(z轴)具有最小的场强,并且在中心(4a)的每一侧具有最大的场强, 并且其中所述轴向磁场分布(6)由所述铁磁场形成装置(3; 18)在中心(4a)中具有沿着轴线(z轴)的场强的最大值和中心(4a)的每一侧的场强的最小值。 根据本发明的磁体结构具有非常简单的结构。

    Actively shielded superconducting magnet with protection means
    10.
    发明授权
    Actively shielded superconducting magnet with protection means 有权
    主动屏蔽超导磁体带保护装置

    公开(公告)号:US06507259B2

    公开(公告)日:2003-01-14

    申请号:US09901496

    申请日:2001-07-09

    IPC分类号: H01F722

    CPC分类号: G01R33/421

    摘要: A magnet coil arrangement comprising an actively shielded superconducting primary circuit (21) comprising first and second magnet windings (1,2,3 and 4,5), and being wound e.g. in winding chambers (7,8,9 and 10,11) in a supporting body (6a,6b) for generating a strong magnetic field in a working volume with a small magnetic stray field and a short circuited secondary circuit (22) which is inductively coupled with the primary circuit (21) and contains third and fourth magnet windings (13,14,15 and 16,17) is characterized in that the magnet windings (13,14,15 and 16,17) of the secondary circuit (22) form an actively shielded magnet coil. This permits a simple and robust coil protection for actively shielded superconducting magnets during a quench wherein the superconducting magnet windings are reliably relieved and the magnetic stray field of the entire arrangement remains small.

    摘要翻译: 一种磁体线圈装置,包括主动屏蔽的超导主电路(21),其包括第一和第二磁体绕组(1,2,3和4,5),并且例如被缠绕。 在用于产生具有小的磁性杂散场的工作体积中的强磁场和短路次级电路(22)的支撑体(6a,6b)中的卷绕室(7,8,9和10,11)中, 与第一电路(21)感应耦合并且包含第三和第四磁体绕组(13,14,15和16,17)的特征在于,次级电路的磁体绕组(13,14,15和16,17) 22)形成主动屏蔽的电磁线圈。 这允许在淬火期间主动屏蔽的超导磁体的简单和鲁棒的线圈保护,其中超导磁体绕组被可靠地释放并且整个布置的磁性杂散场保持较小。