公开(公告)号：US08552667B2

公开(公告)日：2013-10-08

申请号：US13047301

申请日：2011-03-14

Applicant: John Allen ,  Terry Arthur Large

Inventor： John Allen ,  Terry Arthur Large

IPC: H05H9/04 ,  H05H9/00

CPC classification number: H05H9/048 ,  H05H7/18 ,  H05H7/22 ,  H05H2007/225

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120235602A1

公开(公告)日：2012-09-20

申请号：US13047301

申请日：2011-03-14

Applicant: John Allen ,  Terry Arthur Large

Inventor： John Allen ,  Terry Arthur Large

IPC: H05H9/04

CPC classification number: H05H9/048 ,  H05H7/18 ,  H05H7/22 ,  H05H2007/225

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06710557B1

公开(公告)日：2004-03-23

申请号：US10049352

申请日：2002-02-05

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

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

IPC: H01J2510

CPC classification number: H05H9/04 ,  H05H7/18

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06376990B1

公开(公告)日：2002-04-23

申请号：US09529757

申请日：2000-04-18

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

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

IPC: H01J2510

CPC classification number: H05H9/04 ,  H05H7/18

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US06642678B1

公开(公告)日：2003-11-04

申请号：US10049426

申请日：2002-02-05

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

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

IPC: H05H900

CPC classification number: H05H9/04 ,  H05H7/18

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120229024A1

公开(公告)日：2012-09-13

申请号：US13045124

申请日：2011-03-10

Applicant: Terry Arthur Large

Inventor： Terry Arthur Large

IPC: H05H9/00 ,  H01J29/48

CPC classification number: H01J25/34 ,  H01J3/02 ,  H01J23/075 ,  H05H9/048 ,  H05H2007/084

Abstract: The present invention provides an electron gun comprising a cathode, for generating electrons; an anode; an intermediate electrode, located between the cathode and the anode; and a controller. The controller applies an electrical potential to said intermediate electrode, analysing a resultant electrical parameter to determine the integrity of said intermediate electrode; and controls the electron gun to emit a pulse of electrons.

Abstract translation: 本发明提供一种电子枪，其包括用于产生电子的阴极; 阳极; 位于阴极和阳极之间的中间电极; 和控制器。 控制器向所述中间电极施加电势，分析所得的电参数以确定所述中间电极的完整性; 并控制电子枪发射电子脉冲。

公开(公告)号：US07157868B2

公开(公告)日：2007-01-02

申请号：US11194886

申请日：2005-08-01

Applicant: Kevin John Brown ,  Terry Arthur Large ,  Wei Yu

Inventor： Kevin John Brown ,  Terry Arthur Large ,  Wei Yu

IPC: H05H9/00

CPC classification number: H05H7/12 ,  H05H7/18 ,  H05H9/04

Abstract: A linear accelerator comprises a series of accelerating cavities, adjacent pairs of which are coupled via coupling cavities, in which at least one coupling cavity comprises a rotationally asymmetric element that is rotateable thereby to vary the coupling offered by that cavity. A control means for the accelerator is also provided, adapted to control operation of the accelerator and rotation of the asymmetric element, arranged to operate the accelerator in a pulsed manner and to rotate the asymmetric element between pulses to control the energy of successive pulses. A beneficial way of doing so is to rotate the asymmetric element continuously during operation of the linear accelerator. Then, the control means need only adjust the phase of successive pulses so that during the brief period of the pulse, the asymmetric element is “seen” to be at the required position. The asymmetric element can disposed within an evacuated part of the accelerator and rotated by way of an electromagnetic interaction with parts outside the evacuated part. No parts associated with the drive need therefore pass through the vacuum seal. This could be achieved by providing at least one magnetically polarized member on the asymmetric element and at least one electrical coil outside the evacuated part.

Abstract translation: 线性加速器包括一系列加速腔，其相邻的一对通过联接腔耦合，其中至少一个耦合空腔包括可旋转的不对称元件，由此可改变由该空腔提供的耦合。 还提供了一种用于加速器的控制装置，其适于控制加速器的操作和非对称元件的旋转，其布置成以脉冲方式操作加速器并且在脉冲之间旋转不对称元件以控制连续脉冲的能量。 这样做的有益方式是在线性加速器的操作期间连续旋转不对称元件。 然后，控制装置仅需要调整连续脉冲的相位，使得在脉冲的短暂时段期间，非对称元件被“看到”在所需位置。 非对称元件可以设置在加速器的抽真空部分中，并且通过与抽空部件外部的部件的电磁相互作用而旋转。 因此，与驱动器相关的部件不需要通过真空密封。 这可以通过在不对称元件上提供至少一个磁极化构件和在抽空部分外部的至少一个电线圈来实现。