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    • 81. 发明授权
    • Unipolar blocking method and apparatus for monitoring electrically
charged particles
    • 用于监测带电粒子的单极性阻断方法和装置
    • US5475228A
    • 1995-12-12
    • US345079
    • 1994-11-28
    • Jose C. Palathingal
    • Jose C. Palathingal
    • H05H1/00H01J47/18
    • H01J37/3045H01J37/244H05H1/0081H01J2237/24507
    • An apparatus for monitoring an electrically charged particle pulse includes at least one coil defining an opening therethrough. The coil generates a bipolar signal responsive to the electrically charged particle pulse passing through the opening, and the bipolar signal comprises a first portion having a first polarity and a second portion having a second polarity. Unipolar blocking diode connected to the coil passes the first portion of the bipolar signal having a first polarity and blocks the second portion of the bipolar signal having the second polarity. Monitoring Device connected to the unipolar blocking diode generates an output signal representative of a predetermined characteristic of the particle based upon the first portion of the bipolar signal which is passed by the unipolar blocking diode. In a preferred embodiment, the coil has a toroidal shape and comprises a plurality of windings electrically connected in parallel, and each of these windings comprises a plurality of conductive loops. The apparatus may also comprise a series of coils arranged so as to define a predetermined path for passage of the electrically charged particle through each respective opening of each respective coil.
    • 用于监测带电粒子脉冲的装置包括限定穿过其中的开口的至少一个线圈。 线圈产生响应通过开口的带电粒子脉冲的双极信号,双极性信号包括具有第一极性的第一部分和具有第二极性的第二部分。 连接到线圈的单极阻塞二极管通过具有第一极性的双极性信号的第一部分并且阻挡具有第二极性的双极性信号的第二部分。 连接到单极阻塞二极管的监控装置基于由单极阻塞二极管通过的双极性信号的第一部分产生表示粒子的预定特性的输出信号。 在优选实施例中,线圈具有环形形状并且包括并联电连接的多个绕组,并且这些绕组中的每一个包括多个导电环路。 该装置还可以包括一系列线圈,其布置成限定用于使带电粒子通过每个相应线圈的每个相应开口的预定路径。
    • 82. 发明授权
    • Particle beam accelerator electromagnetic arc detection system
    • 粒子束加速器电磁弧检测系统
    • US5142234A
    • 1992-08-25
    • US783607
    • 1991-10-28
    • Robert A. Snead
    • Robert A. Snead
    • G01R31/12H02H1/00H05H1/00
    • G01R31/12H02H1/0015H05H1/0081
    • Low frequency broadband energy is separated from an accelerator structure ndamental radio frequency (rf) energy in the broadband electromagnetic energy within specific frequency bands. The particle beam accelerator electromagnetic arc detection system comprises employing signal lines extended from existing particle beam accelerator diagnostic sensors to electrical filter circuits. Depending on the application requirements, filters are grouped by types such as low-pass, high pass, or bandpass types. The bandpass filters are employed in banks in a preferred embodiment to reject all electrical signals except those within the band of interest. The increase in broadband electromagnetic energy radiated through the accelerator structure as an arc begins to form is readily detectable in the rf spectrum at frequencies below 10 MHz. The electrical signals received by the filters are subsequently passed to detectors which produce a direct current (DC) level proportional to the strength of the signal. The outputs from the rf detectors are then fed to processing logic. When the selected set of rf detectors becomes active, the processor declares an arc condition and produces appropriate signals to inform the main system processor which initiates protective action (e.g., crowbar the high voltage by power supply protection circuitry).
    • 低频宽带能量与特定频带宽带电磁能中的加速器结构基波射频(rf)能量分离。 粒子束加速器电磁波检测系统包括从现有的粒子束加速器诊断传感器延伸到电气滤波器电路的信号线。 根据应用要求,滤波器按照低通,高通或带通类型的类型进行分组。 在优选实施例中,带通滤波器用于存储体,以排除除感兴趣频带内的所有电信号。 随着电弧开始形成的加速器结构辐射的宽带电磁能的增加在频率低于10MHz的频谱范围内是容易检测到的。 由滤波器接收的电信号随后传递到产生与信号强度成比例的直流(DC)电平的检测器。 然后将rf检测器的输出馈送到处理逻辑。 当所选择的一组rf检测器变为有效时,处理器声明一个电弧条件并产生适当的信号,以通知主系统处理器启动保护动作(例如,通过电源保护电路撬动高电压)。
    • 84. 发明授权
    • Flush mountable plasma density profile probe device
    • 可安装等离子体密度剖面探头装置
    • US4388588A
    • 1983-06-14
    • US242086
    • 1981-03-09
    • Leonard S. Taylor
    • Leonard S. Taylor
    • G01R19/08G01R29/00H05H1/00G01R31/02
    • G01R29/00G01R19/08H05H1/0081
    • Information about the plasma density profile in an aerodynamic flow field of plasma adjacent a supersonic space vehicle or test model is provided by a flush mountable plasma density profile probe device having at least three striplines embedded in and separated by a dielectric support member from a conducting ground plane therebelow. In operation, the device is affixed flush and conformally to the surface of the space vehicle or test model. The plasma density profile is determined from a plot of data points derived from sequential measurements, in the plasma flow field environment, of the conduction between a driven stripline and parallel flush embedded additional striplines in the order of the nearest stripline to the furtherest stripline from the driven stripline. Standard formulas can be applied to determine the data points.
    • 关于在超音速空间载体或测试模型附近的等离子体空气动力学流场中的等离子体密度分布的信息由具有至少三条带状线的平面安装式等离子体密度分布探针装置提供,所述至少三条带状线嵌入电介质支撑构件并从导电地层分离 飞机在下面。 在操作中,设备与空间车辆或测试模型的表面齐平并保持贴合。 等离子体密度分布是根据从等离子体流场环境中的顺序测量得到的数据点,从驱动带状线和平行冲洗嵌入的附加带状线之间的导通,以最接近的带状线到从第二条带状线 带状线。 可以应用标准公式来确定数据点。
    • 90. 发明授权
    • Systems for detecting unconfined-plasma events
    • 无侧限等离子体事件检测系统
    • US09074285B2
    • 2015-07-07
    • US12101804
    • 2008-04-11
    • John PeaseSeyed Jafar Jafarian-Tehrani
    • John PeaseSeyed Jafar Jafarian-Tehrani
    • C23C16/00C23F4/00H01J37/32H05H1/00
    • C23F4/00H01J37/32935H05H1/0081
    • A system for detecting unconfined-plasma events in a plasma processing chamber is disclosed. The system may include a sensor disposed in the plasma processing chamber for providing a current when unconfined plasma is present in the plasma processing chamber. The system may also include a converter for converting the current into a voltage and a filter for removing noise from the voltage to provide a first signal. The system may also include a detector for determining presence of the unconfined plasma using an amplified level of the first signal and/or the first signal. The system may also include a conductor for coupling the sensor and the converter to conduct the current from the sensor to the converter. The system may also include a shield for enclosing at least a portion of the conductor to at least reduce electromagnetic noise received by the conductor.
    • 公开了一种用于检测等离子体处理室中的无约束等离子体事件的系统。 该系统可以包括设置在等离子体处理室中的传感器,用于当等离子体处理室中存在无约束等离子体时提供电流。 该系统还可以包括用于将电流转换成电压的转换器和用于从电压去除噪声以提供第一信号的滤波器。 该系统还可以包括用于使用第一信号和/或第一信号的放大电平来确定无约束等离子体的存在的检测器。 该系统还可以包括用于耦合传感器和转换器以将电流从传感器传导到转换器的导体。 该系统还可以包括用于封闭导体的至少一部分以至少降低由导体接收的电磁噪声的屏蔽。