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135 条记录 (耗时 0.027 秒)

    Linear accelerator
    1.
    发明授权
    Linear accelerator 有权
    线性加速器

    公开(公告)号：US06710557B1

    公开(公告)日：2004-03-23

    申请号：US10049352

    申请日：2002-02-05

    申请人： John Allen ,  Leonard Knowles Brundle ,  Terry Arthur Large ,  Terence Bates

    发明人： John Allen ,  Leonard Knowles Brundle ,  Terry Arthur Large ,  Terence Bates

    IPC分类号： H01J2510

    CPC分类号： H05H9/04 ,  H05H7/18

    摘要： An accelerator comprises a plurality of accelerating cells arranged to convey a beam, adjacent cells being linked by a coupling cell, the coupling cells being arranged to dictate the ratio of electric field in the respective adjacent accelerating cells, at least one coupling cell being switchable between a positive ratio and a negative ratio. Such an accelerator in effect inserts a phase change into the E field by imposing a negative ratio, meaning that the beam will meet a reversed electric field in subsequent cells and will in fact be decelerated. As a result, the beam can be developed and bunched in early cells while accelerating to and/or at relativistic energies, and then bled of energy in later cells to bring the beam energy down to (say) between 100 and 300 KeV. Energies of this magnitude are comparable to diagnostic X-rays, where much higher contrast of bony structures exists. Hence the accelerator can be used to take kilovoltage portal images.

    摘要翻译： 加速器包括多个加速单元，其被布置成传送波束，相邻单元由耦合单元链接，所述耦合单元布置成指示相应相邻加速单元中的电场的比率，至少一个耦合单元可在 正比率和负比率。 这样的加速器实际上通过施加负比率将相位插入到E场中，这意味着光束将在随后的单元中遇到反向的电场，并且实际上将被减速。 结果，可以在加速到和/或相对论能量的同时在早期的单元中显影和聚束光束，然后在稍后的单元中排出能量，以将光束能量降低到（例如）100和300KeV之间。 这种量级的能量与诊断X射线相当，骨骼结构的对比度高得多。 因此，加速器可用于采取千伏门户图像。

    Linear accelerator
    2.
    发明授权
    Linear accelerator 有权
    线性加速器

    公开(公告)号：US06376990B1

    公开(公告)日：2002-04-23

    申请号：US09529757

    申请日：2000-04-18

    申请人： John Allen ,  Leonard Knowles Brundle ,  Terry Arthur Large ,  Terence Bates

    发明人： John Allen ,  Leonard Knowles Brundle ,  Terry Arthur Large ,  Terence Bates

    IPC分类号： H01J2510

    CPC分类号： H05H9/04 ,  H05H7/18

    摘要： This device allows the variation of the coupling between two points in an RF circuit in a very simple way while maintaining the RF phase relationship and varying the relative magnitude of the RF fields. The device is characterized by a simple mechanical control of coupling value, that has negligible effect on the phase shift across the device. This is achieved by the simple rotation of the polarisation of a TE111 mode inside a cylindrical cavity. Such a device does not contain resistive elements, and the sliding mechanical surfaces are free from high RF currents. This device finds an application in standing wave linear accelerators, where it is desirable to vary the relative RF field in one set of cavities with respect to another, in order that the accelerator can operate successfully over a wide range of energies.

    摘要翻译： 该装置允许以非常简单的方式在RF电路中的两个点之间的耦合的变化，同时保持RF相位关系并改变RF场的相对幅度。 该器件的特征在于耦合值的简单机械控制，对于跨器件的相移具有可忽略的影响。 这通过在圆柱形腔内的TE111模式的极化的简单旋转来实现。 这种装置不包含电阻元件，并且滑动机械表面没有高RF电流。 该装置在驻波线性加速器中发现了一种应用，其中期望相对于另一组空腔改变相对RF场，以便加速器能够在宽范围的能量范围内成功地运行。

    Linear accelerator
    3.
    发明授权
    Linear accelerator 有权
    线性加速器

    公开(公告)号：US06642678B1

    公开(公告)日：2003-11-04

    申请号：US10049426

    申请日：2002-02-05

    申请人： John Allen ,  Leonard Knowles Brundle ,  Terry Arthur Large ,  Terence Bates

    发明人： John Allen ,  Leonard Knowles Brundle ,  Terry Arthur Large ,  Terence Bates

    IPC分类号： H05H900

    CPC分类号： H05H9/04 ,  H05H7/18

    摘要： A standing wave linear accelerator has a plurality of resonant cavities located along a particle beam axis. One or more pairs of resonant cavities are electromagnetically coupled via a coupling cavity. A rotationally asymmetric element within the coupling cavity is adapted to rotate about an axis that is substantially parallel to the axis of the coupling cavity. The coupling cavity is imperfectly symmetric about its axis due to a relative excess of material disposed within the cavity in the portion opposed to the apertures. Rotation of the polarization of a TE111 mode inside the cylindrical cavity provided a simple single mechanical control of coupling value, that has negligible effect on the phase shift across the device. A slight frequency dependence on the angle of rotation is correctable by a relative excess of material located opposite the apertures between the coupling cavity and the accelerating cavities.

    摘要翻译： 驻波直线加速器具有沿着粒子束轴定位的多个谐振腔。 一对或多对谐振腔通过耦合腔电磁耦合。 耦合空腔内的旋转非对称元件适于围绕基本上平行于耦合腔的轴线的轴线旋转。 由于在与孔相对的部分中设置在腔内的材料的相对过量，耦合空腔的轴线不完全对称。 在圆柱形腔内旋转TE111模式的极化提供了耦合值的简单单一机械控制，对整个装置的相移影响可以忽略不计。 通过与耦合腔和加速腔之间的孔相对定位的相对过量的材料可以校正对旋转角度的轻微的频率依赖性。

    Linear accelerator
    4.
    发明申请
    Linear accelerator 有权
    线性加速器

    公开(公告)号：US20120235602A1

    公开(公告)日：2012-09-20

    申请号：US13047301

    申请日：2011-03-14

    申请人： John Allen ,  Terry Arthur Large

    发明人： John Allen ,  Terry Arthur Large

    IPC分类号： H05H9/04

    CPC分类号： H05H9/048 ,  H05H7/18 ,  H05H7/22 ,  H05H2007/225

    摘要： The present invention provides a linear accelerator in which a rotatable conductive vane is employed to vary the electromagnetic coupling between adjacent accelerating cells. The vane is sealed off from the rest of the linear accelerator by an insulating partition, so the pressure around the vane can be higher than in the rest of the accelerator. This greatly simplifies the mechanisms which may be used to control the rotation of the vane, allowing a higher bakeout temperature in manufacture and a higher rate of rotation in use.

    摘要翻译： 本发明提供了一种线性加速器，其中可旋转的导电叶片用于改变相邻加速单元之间的电磁耦合。 叶片通过绝缘隔板与其余的直线加速器密封，因此叶片周围的压力可能高于其他加速器。 这大大简化了可用于控制叶片旋转的机制，允许制造时更高的烘烤温度和更高的使用旋转速度。

    Linear accelerator
    5.
    发明授权
    Linear accelerator 有权
    线性加速器

    公开(公告)号：US08552667B2

    公开(公告)日：2013-10-08

    申请号：US13047301

    申请日：2011-03-14

    申请人： John Allen ,  Terry Arthur Large

    发明人： John Allen ,  Terry Arthur Large

    IPC分类号： H05H9/04 ,  H05H9/00

    CPC分类号： H05H9/048 ,  H05H7/18 ,  H05H7/22 ,  H05H2007/225

    摘要： The present invention provides a linear accelerator in which a rotatable conductive vane is employed to vary the electromagnetic coupling between adjacent accelerating cells. The vane is sealed off from the rest of the linear accelerator by an insulating partition, so the pressure around the vane can be higher than in the rest of the accelerator. This greatly simplifies the mechanisms which may be used to control the rotation of the vane, allowing a higher bakeout temperature in manufacture and a higher rate of rotation in use.

    摘要翻译： 本发明提供了一种线性加速器，其中可旋转的导电叶片用于改变相邻加速单元之间的电磁耦合。 叶片通过绝缘隔板与其余的直线加速器密封，因此叶片周围的压力可能高于其他加速器。 这大大简化了可用于控制叶片旋转的机制，允许制造时更高的烘烤温度和更高的使用旋转速度。

    Radiotherapy and imaging apparatus
    9.
    发明申请
    Radiotherapy and imaging apparatus 审中-公开
    放射治疗和成像设备

    公开(公告)号：US20110201920A1

    公开(公告)日：2011-08-18

    申请号：US12704986

    申请日：2010-02-12

    申请人： John Allen ,  Kevin John Brown

    发明人： John Allen ,  Kevin John Brown

    IPC分类号： A61B5/055 ,  A61N5/00 ,  G21K1/04

    CPC分类号： A61N5/1049 ,  A61N5/1042 ,  A61N5/1045 ,  A61N5/1048 ,  A61N5/1071 ,  A61N5/1081 ,  A61N2005/1054 ,  A61N2005/1055 ,  G01R33/4808

    摘要： A radiotherapy system comprises a patient support, moveable along a translation axis, an imaging apparatus, comprising a first magnetic coil and a second magnetic coil, the first and second magnetic coils having a common central axis parallel to the translation axis, and being displaced from one another along the central axis to form a gap therebetween, the imaging apparatus being configured to obtain an image of a patient on the patient support, a source of radiation mounted on a chassis, the chassis being rotatable about the central axis and the source being adapted to emit a beam of radiation through the gap along a beam axis that intersects with the central axis, a multi-leaf collimator comprising a plurality of elongate leaves movable between at least a withdrawn position in which the leaf lies outside the beam, and an extended position in which the leaf projects across the beam, and a radiation detector mounted to the chassis opposite the source, the radiation detector having a plurality of detector elements aligned with the elongate leaves when projected onto an isocentric plane.

    摘要翻译： 放射治疗系统包括可沿着平移轴线移动的患者支架，包括第一电磁线圈和第二电磁线圈的成像装置，所述第一和第二磁线圈具有平行于所述平移轴的公共中心轴线， 另一个沿着中心轴线在其间形成间隙，成像装置被配置为获得病人支撑物上的患者的图像，安装在底盘上的辐射源，底盘可围绕中心轴线旋转， 适于沿着与所述中心轴相交的束轴发射通过所述间隙的辐射束;多叶准直器，包括多个细长叶片，所述多叶片准直器至少在所述叶片位于所述梁的外部的撤回位置之间移动， 延伸位置，其中叶片跨过梁进行突出，以及辐射检测器，安装到底盘与源相对，辐射探测器具有ap 当投影到等中心平面上时，检测器元件与细长叶片对准的灵敏度。

    Fuel enhancement system for an internal combustion engine
    10.
    发明授权
    Fuel enhancement system for an internal combustion engine 失效
    内燃机燃油增压系统

    公开(公告)号：US07951288B2

    公开(公告)日：2011-05-31

    申请号：US12093320

    申请日：2006-11-08

    申请人： John Allen

    发明人： John Allen

    IPC分类号： F02M33/00 ,  C10L1/04

    CPC分类号： F02M27/04 ,  C10G31/00 ,  C10G32/00

    摘要： A method of for treating a hydrocarbon fuel comprises applying a plurality of shock waves to the fuel at a frequency and intensity such as to increase the combustion efficiency of the fuel. An apparatus for treating a hydrocarbon fuel comprises a fuel treatment chamber; an inlet for introducing a hydrocarbon fuel to be treated into the treatment chamber; an outlet for removing a treated hydrocarbon fuel from the treatment chamber; and a means for imparting a plurality of shock waves to fuel within the treatment chamber at a frequency and intensity such as to increase the combustion efficiency of the fuel. The apparatus is particularly suitable for installation in the fuel supply system of an internal combustion engine.

    摘要翻译： 一种用于处理烃燃料的方法包括以频率和强度施加多个冲击波到燃料，以增加燃料的燃烧效率。 用于处理烃燃料的设备包括燃料处理室; 用于将待处理的烃类燃料引入所述处理室的入口; 用于从所述处理室去除经处理的烃燃料的出口; 以及用于以频率和强度将多个冲击波施加到处理室内的燃料的装置，以增加燃料的燃烧效率。 该装置特别适合于安装在内燃机的燃料供给系统中。