公开(公告)号：US07394081B2

公开(公告)日：2008-07-01

申请号：US11088208

申请日：2005-03-24

申请人： Takashi Okazaki ,  Kazuki Tsuchida ,  Hirofumi Seki ,  Robert W. Hamm

发明人： Takashi Okazaki ,  Kazuki Tsuchida ,  Hirofumi Seki ,  Robert W. Hamm

IPC分类号： A61N5/00

CPC分类号： G21G1/10 ,  A61K51/1282

摘要： A radioisotope production apparatus includes: a linear accelerator for accelerating an ion beam and irradiating a target with the ion beam, radio frequency power supplies for supplying radio frequency waves through coaxial tubes and the linear accelerator, a target shield member containing the target, a first radiation shield member covering the linear accelerator, and a movable second radiation shield member covering the side of target shield member of the linear accelerator between the first radiation shield member and the target shield member. The first radiation shield member is movably divided in opposite directions, respectively, of the axial direction of the linear accelerator from the base point of the connection point of the coaxial tube connected to the linear accelerator.

摘要翻译： 放射性同位素制造装置包括：用于加速离子束并用离子束照射靶的线性加速器，用于通过同轴管和线性加速器提供射频的射频电源，包含靶的靶屏蔽构件，第一 覆盖直线加速器的辐射屏蔽构件，以及覆盖第一辐射屏蔽构件和目标屏蔽构件之间的线性加速器的目标屏蔽构件的一侧的可移动的第二辐射屏蔽构件。 第一辐射屏蔽构件从连接到线性加速器的同轴管的连接点的基点分别沿线性加速器的轴向的相反方向可移动地分开。

公开(公告)号：US5382914A

公开(公告)日：1995-01-17

申请号：US879966

申请日：1992-05-05

申请人： Robert W. Hamm ,  Kenneth R. Crandall ,  James M. Potter

发明人： Robert W. Hamm ,  Kenneth R. Crandall ,  James M. Potter

IPC分类号： A61N5/10 ,  H05H9/00 ,  H01J25/10

CPC分类号： H05H9/00 ,  A61N2005/1087

摘要： A compact proton-beam therapy linac utilizing a linear, cascaded organization including a proton source, a radio-frequency-quadrupole (RFQ) linac coupled to the output of the source, a stepped-frequency (around 500- to around 100-MHz), low-peak-beam-current (around 100- to around 300-.mu. A) drift-tube linac (DTL) coupled to receive the output of the RFQ, and a plural-stage, low-peak-beam-current stage-switchable, side-coupled linac (SCL) coupled to the output of the DTL for producing the ultimate output proton-therapy beam.

摘要翻译： 使用线性级联机构的紧凑型质子束治疗线性加速器，包括质子源，耦合到源的输出的射频四极杆（RFQ）线性加速器，阶梯式频率（约500-约100MHz） 耦合以接收RFQ的输出的低峰值波束电流（大约100到大约300μA）的漂移管线性加速器（DTL），以及多级低峰值波束电流级 - 可切换的侧耦合线性加速器（SCL）耦合到DTL的输出端，用于产生最终的输出质子治疗束。

公开(公告)号：US20120126727A1

公开(公告)日：2012-05-24

申请号：US13299174

申请日：2011-11-17

申请人： Robert W. Hamm

发明人： Robert W. Hamm

IPC分类号： H05H9/00

CPC分类号： H05H9/045 ,  H01J2237/08

摘要： Sub-nanosecond single ion beam pulses are generated by means of one embodiment of the invention. In this embodiment, an ion source provides ions to a radio frequency quadrupole linear accelerator comprising electrodes. A power source is used to apply radio frequency alternating currents to the electrodes. A device is used to inject ions from the ion source to the accelerator, causing the accelerator to provide only a single sub-nanosecond output beam pulse at a time.

摘要翻译： 通过本发明的一个实施例产生亚纳秒级单离子束脉冲。 在该实施例中，离子源向包括电极的射频四极线性加速器提供离子。 电源用于向电极施加射频交流电流。 一种器件用于将离子从离子源注入加速器，使得加速器一次只能提供一个亚纳秒级的输出光束脉冲。

公开(公告)号：US4712042A

公开(公告)日：1987-12-08

申请号：US825273

申请日：1986-02-03

申请人： Robert W. Hamm

发明人： Robert W. Hamm

IPC分类号： H01J23/24 ,  H01J37/08 ,  H01J37/317 ,  H05H9/00 ,  H05H9/02 ,  H05H7/12

CPC分类号： H05H9/00 ,  H01J23/24

摘要： A variable frequency RFQ linear accelerator has a sequence of variable inductance coils connected at intervals along the electrode vanes, such that each coil together with the corresponding section of the vanes forms an LC resonant circuit having a resonant frequency equal to the operating frequency of the accelerator. The variable inductance coils are each comprised of a helical bifilar coil, with each filament of a given coil being connected to one pair of vane electrodes on opposite sides of the beam axis, and a movable shorting bar is provided for each bifilar coil to vary the inductance. The helical bifilar coils in adjacent sections are disposed on opposite sides of the beam axis, the axes of the coils on either side being parallel to the beam axis and mutually coincident. Drive shafts extend along these axes through the wall of the vacuum vessel, with control rods extending radially outward to each of the shorting bars, and a ganging mechanism is provided to control all of the shorting bars so that the LC circuits all maintain the same resonant frequency. The power supply is connected to the vane electrodes through a capacitive impedance. Mode switches are further provided at the ends of the bifilar inductance coils to avoid interfering resonances from the sections of the coils beyond the shorting bars.

摘要翻译： 可变频率RFQ线性加速器具有沿着电极叶片间隔连接的可变电感线圈序列，使得每个线圈与叶片的相应部分一起形成具有等于加速器的工作频率的谐振频率的LC谐振电路 。 可变电感线圈各自包括螺旋双线圈，给定线圈的每个灯丝连接到梁轴的相对侧上的一对叶片电极，并且为每个双线圈提供可移动的短路棒，以改变 电感。 相邻部分中的螺旋双线圈设置在梁轴的相对侧上，任一侧上的线圈的轴线平行于梁轴线并相互重合。 驱动轴沿着这些轴线延伸穿过真空容器的壁，控制杆径向向外延伸到每个短路杆，并且提供一个联动机构来控制所有的短路棒，使得LC电路都保持相同的谐振 频率。 电源通过电容性阻抗连接到叶片电极。 模式开关还设置在双电感线圈的端部，以避免来自线圈的部分的超过短路棒的共振。