Fermi chopper rotation control device
    41.
    发明专利
    Fermi chopper rotation control device 有权
    FERMI CHOPPER旋转控制装置

    公开(公告)号:JP2012078315A

    公开(公告)日:2012-04-19

    申请号:JP2010226434

    申请日:2010-10-06

    CPC classification number: F16C2360/45

    Abstract: PROBLEM TO BE SOLVED: To provide a Fermi chopper rotation control device improving a rotary speed and the precision of the rotary speed, and reducing a current spike noise.SOLUTION: A Fermi chopper 1 for monochromating neutron beam generated at a pulsed neutron source includes: a three-phase signal generating unit 4 that generates a three-phase sinusoidal signal from a digital phase signal for supplying respective phase coils of an induction motor 12 therewith; a three-phase power amplifier 6; and a motor control unit 5. The motor control unit 5 outputs a phase signal corresponding to a target rotary speed of a rotor 11 to the three-phase signal generating unit 4, and performs a speed control for controlling the rotary speed of the induction motor 12 based on the rotary speed of the rotor 11 detected by a rotation sensor 14, and a phase control for controlling the phase of the induction motor 12 based on a reference timing signal input from the outside and the rotary position of the rotor 11 detected by the rotation sensor 14.

    Abstract translation: 要解决的问题:提供一种提高转速和转速精度的费米切片机旋转控制装置,并且减小电流尖峰噪声。 解决方案:用于在脉冲中子源处产生的用于单色中子束的费米切片机1包括:三相信号产生单元4,其从数字相位信号产生三相正弦信号,以提供感应的各相线圈 电动机12; 三相功率放大器6; 和电动机控制单元5.电动机控制单元5将与转子11的目标转速相对应的相位信号输出到三相信号生成单元4,并且执行用于控制感应电动机的转速的速度控制 基于由旋转传感器14检测的转子11的旋转速度的相位控制,以及基于从外部输入的基准定时信号和转子11的旋转位置来控制感应电动机12的相位的相位控制 旋转传感器14.版权所有(C)2012,JPO&INPIT

    Laser compton light generator, laser compton light generating method, and neutron beam generator
    42.
    发明专利
    Laser compton light generator, laser compton light generating method, and neutron beam generator 有权
    激光压光灯发光器,激光压缩光发生器和中子光束发生器

    公开(公告)号:JP2012033338A

    公开(公告)日:2012-02-16

    申请号:JP2010170647

    申请日:2010-07-29

    Inventor: HAJIMA RYOICHI

    Abstract: PROBLEM TO BE SOLVED: To obtain laser Compton light with a high monochromaticity.SOLUTION: An electron pulse 12 that passed through a deflection cavity 13 passes a linear accelerator 14. The electron pulse 12 receives high-frequency acceleration to become a high-energy electron pulse 15, in the linear accelerator 14. A laser beam source 16 generates a pulse-like laser beam 17 that is visible light or near infrared light. Setting is performed so that the laser beam 17 is reflected on a reflection mirror 18 and collided with the high-energy electron pulse 15 at a collision point 19. Laser Compton light 20, that is high-energy light (an X ray, a gamma ray, and the like), is generated from the collision point 19. Setting is performed so that an inclination angle to the travelling direction is given to the electron pulse 12 by the deflection cavity 13, and the inclination angle becomes larger at the collision point 19.

    Abstract translation: 要解决的问题:获得具有高单色度的激光康普顿光。 解决方案:通过偏转腔13的电子脉冲12通过线性加速器14.在线性加速器14中,电子脉冲12接收高频加速度成为高能电子脉冲15.激光束 源极16产生可见光或近红外光的脉冲状激光束17。 进行设定,使得激光束17在反射镜18上反射并与碰撞点19处的高能电子脉冲15相撞。激光康普顿光20,即高能量光(X射线,γ 射线等)从碰撞点19产生。通过偏转腔13对电子脉冲12施加与行进方向的倾斜角度的设定,并且在碰撞点处的倾斜角变大 19.版权所有(C)2012,JPO&INPIT

    Neutral particle generator
    43.
    发明专利

    公开(公告)号:JP2011529612A

    公开(公告)日:2011-12-08

    申请号:JP2011520275

    申请日:2009-06-22

    CPC classification number: H05H3/02 G21B1/19 H05H3/06 Y02E30/16

    Abstract: A neutral particle generator is disclosed that includes a container which holds a material in at least a partial plasma state, for example a Deuterium plasma. In one form, a first cathode is positioned within the container and produces a first beam of neutral particles directed away from the first cathode. Optionally, a second cathode is also positioned within the container and produces a second beam of neutral particles directed away from the second cathode, and/or a target is also positioned within the container. In one form, the first cathode and the second cathode are linearly opposed so that the first beam interacts/collides with the second beam resulting in fusion reactions of at least some of the neutral particles, which thereby results in generation of emitted neutrons.

    Medical apparatus for boron neutron capture therapy
    47.
    发明专利
    Medical apparatus for boron neutron capture therapy 有权
    用于BORON NEUTRON CAPTURE治疗的医疗设备

    公开(公告)号:JP2008022920A

    公开(公告)日:2008-02-07

    申请号:JP2006196110

    申请日:2006-07-18

    CPC classification number: A61N5/1081 A61N2005/109

    Abstract: PROBLEM TO BE SOLVED: To provide a BNCT apparatus which utilizes a linear accelerator and emits neutrons to a treatment site from a plurality of directions depending on the treatment site. SOLUTION: Protons are accelerated by using the linear accelerator 3 in such a manner that proton energy is in a range that a neutron generation rate generated per unit proton current by a 9 Be (p, xn) reaction is greater than that by a 7 Li (p, n) reaction and is smaller than that by a nuclear spallation reaction. The accelerated protons are introduced to a plurality of quadrupolar electromagnets 14 and a rotary gantry 5A comprising deflecting electromagnets 15A, 15B, 15C and are collided with a target 7 of beryllium for generating neutrons which is provided at the end of the rotary gantry 5A. The fast neutrons generated at the target 7 are adjusted to thermal neutrons or epithermal neutrons which are necessary for the boron neutron capture therapy by using an attachable and detachable neutron irradiation part 9 and are emitted to the treatment site from a plurality of directions. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题:提供一种利用线性加速器并根据治疗部位从多个方向向处理部位发出中子的BNCT装置。 解决方案:通过使用线性加速器3,使质子能量在每单位质子电流产生的中子产生速率(P,xn)的范围内加速质子 )反应比通过 7 Li(p,n)反应的反应小,并且小于核分散反应的反应。 加速质子被引入多个四极电磁体14和包括偏转电磁体15A,15B,15C的旋转台架5A,并与铍靶7碰撞,用于产生设置在旋转台架5A的端部处的中子。 在目标7处产生的快中子通过使用可附接和可分离的中子照射部分9调整为硼中子俘获治疗所必需的热中子或超热中子,并从多个方向发射到治疗部位。 版权所有(C)2008,JPO&INPIT

    Negative ion source generating uniform negative ion beam from plasma in negative ion source
    49.
    发明专利
    Negative ion source generating uniform negative ion beam from plasma in negative ion source 审中-公开
    负离子源产生负离子源的等离子体负离子束

    公开(公告)号:JP2005183062A

    公开(公告)日:2005-07-07

    申请号:JP2003419121

    申请日:2003-12-17

    Abstract: PROBLEM TO BE SOLVED: To solve the following problem that: though a magnetic filter uniform over a wide area is formed to uniformize negative ion density conventionally, since a negative ion source is enlarged to obtain high power and negative ions are pulled out of a wide area and accelerated in an NBI, negative ion beams are not generated uniformly spatially, for example, the density of negative ion currents generated from the lower part of the negative ion source lowers by several 10% compared with that of the upper part. SOLUTION: By controlling magnetic filter strength which is conventionally uniform, and making it optimal strength according to a partial parameter of plasma, low electron-temperature plasma is obtained over a wide area, and uniform negative ions are generated in the wide area. COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 解决以下问题:为了解决以下问题:尽管形成了大面积均匀的磁性过滤器,以使传统的负离子密度均匀化,但是由于负离子源被扩大以获得高功率并且将负离子拉出 在NBI中加速,负离子束不会在空间上均匀地产生,例如,从负离子源的下部产生的负离子电流的密度比上部的密度降低几十% 。

    解决方案:通过控制传统均匀的磁性过滤器强度,并根据等离子体的部分参数使其达到最佳强度,在广泛的面积上获得低电子温度的等离子体,在广泛的区域产生均匀的负离子 。 版权所有(C)2005,JPO&NCIPI

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