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184 条记录 (耗时 0.046 秒)

    Spark gap
    2.
    发明授权
    Spark gap 有权

    公开(公告)号：US09679737B2

    公开(公告)日：2017-06-13

    申请号：US14407163

    申请日：2012-06-14

    申请人： Oliver Heid ,  Timothy Hughes ,  Jennifer Sirtl

    发明人： Oliver Heid ,  Timothy Hughes ,  Jennifer Sirtl

    IPC分类号： H05G2/00 ,  H01J35/22 ,  H01J35/02 ,  H05G1/08

    CPC分类号： H01J35/22 ,  H01J35/025 ,  H05G1/08

    摘要： A spark gap comprising a cathode and an anode is provided. The spark gap is divided into two partial spark gaps by means of a central piece, namely a high-pressure spark gap and an effective spark gap. The effective spark gap can for example, be used to generate monochromatic x-rays. In order to guarantee a defined switching time, the high pressure spark gap which is initially switched to defined, is used. The switching initiates a potential so high on the centre piece that, when the high pressure spark gap is switched, the effective spark gap can also be switched in a defined manner without significant delays, to a visibly higher voltage.

    Detector for radiation, particularly high energy electromagnetic radiation
    3.
    发明授权
    Detector for radiation, particularly high energy electromagnetic radiation 有权
    辐射检测器，特别是高能量电磁辐射

    公开(公告)号：US09594171B2

    公开(公告)日：2017-03-14

    申请号：US14403707

    申请日：2012-06-08

    申请人： Irina Astafieva ,  Oliver Heid ,  Timothy Hughes

    发明人： Irina Astafieva ,  Oliver Heid ,  Timothy Hughes

    IPC分类号： G01V5/04 ,  G01T1/185 ,  H01J47/02 ,  G01T1/20

    CPC分类号： G01T1/185 ,  G01T1/2006 ,  H01J47/02 ,  H01J47/024

    摘要： A detector for radiation, particularly high energy electromagnetic radiation is provided. The detector includes a converting section including a cathode for converting the radiation incident on the converting section in electrons by the photoelectric effect. The detector further includes a gas electron multiplier for generating an electron avalanche from electrons which are generated by the converting section and enter the gas electron multiplier, the gas electron multiplier including a first electrode, a dielectric layer and a second electrode, the first electrode being disposed at a first side of the dielectric layer adjacent to the converting section and the second electrode being disposed at a second side of the dielectric layer opposite to the first side. The gas electron multiplier includes a number of holes filled with gas, the holes extending through the first electrode, the dielectric layer and the second electrode.

    摘要翻译： 提供了用于辐射的检测器，特别是高能量的电磁辐射。 检测器包括转换部分，其包括用于通过光电效应将入射在转换部分上的辐射转换为电子的阴极。 检测器还包括气体电子倍增器，用于从由转换部分产生并进入气体电子倍增器的电子产生电子雪崩，气体电子倍增器包括第一电极，电介质层和第二电极，第一电极为 设置在与转换部相邻的电介质层的第一侧，第二电极设置在与第一侧相反的电介质层的第二侧。 气体电子倍增器包括填充有气体的多个孔，所述孔延伸穿过第一电极，电介质层和第二电极。

    Variation of an MRI sequence parameter to minimize the variance of a measured value
    4.
    发明授权
    Variation of an MRI sequence parameter to minimize the variance of a measured value 有权
    MRI序列参数的变化以最小化测量值的方差

    公开(公告)号：US09235202B2

    公开(公告)日：2016-01-12

    申请号：US13807026

    申请日：2011-05-19

    申请人： Oliver Heid

    发明人： Oliver Heid

    IPC分类号： G05B15/02 ,  G01R33/54 ,  G01R33/28 ,  G01R33/56

    CPC分类号： G05B15/02 ,  G01R33/28 ,  G01R33/543 ,  G01R33/5601 ,  G01R33/5608

    摘要： In a magnetic resonance system and a method and device for generating a control command sequence for operating the magnetic resonance system, a magnetic resonance data acquisition sequence is provided to a processor and is modified in the processor. The sequence operates the magnetic resonance system to acquire magnetic resonance data from a subject in multiple individual data acquisitions for subsequent automated evaluation of the individual data acquisitions with respect to an evaluation parameter. The individual evaluation results are combined into an overall evaluation result. The control command sequence is automatically modified in the processor by varying at least one sequence control parameter between different individual data acquisitions so that a variance of a measurement error in the overall evaluation result is minimized.

    摘要翻译： 在用于产生用于操作磁共振系统的控制命令序列的磁共振系统和方法和装置中，向处理器提供磁共振数据获取序列，并在处理器中进行修改。 该序列操作磁共振系统以在多个单独的数据采集中从受试者获取磁共振数据，以便随后自动评估关于评估参数的各个数据采集。 将个人评估结果合并为一个整体评估结果。 通过在不同的单独数据采集之间改变至少一个序列控制参数来在处理器中自动修改控制命令序列，使得总体评估结果中的测量误差的变化最小化。

    High-frequency supply of a load without impedance matching
    5.
    发明授权
    High-frequency supply of a load without impedance matching 有权
    高频电源负载无阻抗匹配

    公开(公告)号：US09000738B2

    公开(公告)日：2015-04-07

    申请号：US13580526

    申请日：2011-01-31

    申请人： Oliver Heid

    发明人： Oliver Heid

    IPC分类号： H02M1/088 ,  H05H1/46 ,  H01J37/32 ,  H03F3/217 ,  H02M3/158 ,  H02M11/00

    CPC分类号： H05H1/46 ,  H01J37/32009 ,  H01J37/32027 ,  H01J37/32045 ,  H02M1/088 ,  H02M3/1584 ,  H02M11/00 ,  H03F3/2178

    摘要： An energy supplying device for a load has a direct current source, a number of switching stages, and a control device. The switching stages are connected to the direct current source, the load, and the control device such that the control device can drive the switching stages to selectively connect the load to the direct current source. Each switching stage has a field effect transistor and a number of freewheeling diodes connected in opposition to the respective field effect transistor in parallel. The field effect transistors have a maximum operational threshold frequency. Each freewheeling diode has a recovery time. For each switching stage, the recovery times of the respective freewheeling diodes correspond with the reciprocal value of the threshold frequency of the respective field effect transistor. The control device controls the switching stages at least intermittently such that power is reflected back into the switching stages on the basis of a mismatch.

    摘要翻译： 用于负载的能量供应装置具有直流电源，多个开关级和控制装置。 开关级连接到直流电源，负载和控制装置，使得控制装置可以驱动开关级以选择性地将负载连接到直流电源。 每个开关级具有场效应晶体管和多个并联连接的相应的场效应晶体管的续流二极管。 场效应晶体管具有最大操作阈值频率。 每个续流二极管具有恢复时间。 对于每个开关级，相应的续流二极管的恢复时间对应于各个场效应晶体管的阈值频率的倒数值。 控制装置至少间歇地控制开关级，使得功率基于失配反射回开关级。

    RF cavity and accelerator having such an RF cavity
    7.
    发明授权
    RF cavity and accelerator having such an RF cavity 有权
    RF腔和加速器具有这样的RF空腔

    公开(公告)号：US08779697B2

    公开(公告)日：2014-07-15

    申请号：US13510120

    申请日：2010-10-18

    申请人： Arnd Baurichter ,  Oliver Heid ,  Timothy Hughes

    发明人： Arnd Baurichter ,  Oliver Heid ,  Timothy Hughes

    IPC分类号： H05H9/00

    CPC分类号： H05H7/18 ,  H05H7/02 ,  H05H7/22

    摘要： An RF cavity includes a chamber, a conductive wall that encloses the chamber and has an inner side and an outer side, a switch arrangement comprising a plurality of solid-state switches arranged along a circumference of the wall around the chamber, wherein the solid-state switches are connected to the conductive wall such that RF currents are induced in the conductive wall when the switch arrangement is activated, as a result of which RF power is coupled into the chamber of the RF cavity, and a shielding device located on the outer side of the conductive wall, along a circumference of the RF cavity, the shielding device configured to increase the impedance of a propagation path of RF currents along the outer side of the wall such that the RF currents coupled into the wall are suppressed on the outer side of the wall.

    摘要翻译： RF腔包括腔室，封闭腔室并具有内侧和外侧的导电壁，开关装置，包括围绕室的围绕壁的圆周布置的多个固态开关，其中， 状态开关连接到导电壁，使得当开关装置被激活时RF电流在导电壁中被感应，由此RF功率被耦合到RF空腔的腔室中，并且位于外部的屏蔽装置 导电壁的沿着RF腔的圆周的一侧，屏蔽装置被配置为增加沿着壁的外侧的RF电流的传播路径的阻抗，使得耦合到壁中的RF电流被抑制在外部 墙的一边

    Push-pull amplifier having inductive common mode decoupling
    9.
    发明授权
    Push-pull amplifier having inductive common mode decoupling 有权
    具有感性共模去耦的推挽放大器

    公开(公告)号：US08653894B2

    公开(公告)日：2014-02-18

    申请号：US13578046

    申请日：2011-01-21

    申请人： Oliver Heid

    发明人： Oliver Heid

    IPC分类号： H03F3/26

    CPC分类号： H03F3/28 ,  H03F3/26 ,  H03F2200/537

    摘要： A push-pull amplifier is provided for amplifying an input signal, having first and second amplifier elements. Each of the amplifier elements has a current-emitting electrode, a current-collecting electrode, and a current-controlling electrode. The input signal is supplied to the current-controlling electrodes of the amplifier elements via a respective input connection and a respective input inductor arranged between the respective input connection and the respective current-controlling electrode. The current-collecting electrodes are connected via a respective supply inductor having a common supply voltage. The current-emitting electrode of each amplifier element is connected to the current-collecting electrode of the other amplifier element via a respective capacitor. The current-emitting electrodes are connected to output connections on which the output signal can be picked up, and to a reference potential via a respective output inductor. The supply inductors of the amplifier elements are inductively coupled to the input inductors and the output inductors of the respectively other amplifier element.

    摘要翻译： 提供了一种用于放大具有第一和第二放大器元件的输入信号的推挽放大器。 每个放大器元件具有电流发射电极，集电电极和电流控制电极。 输入信号经由相应的输入连接和布置在各个输入连接和各个电流控制电极之间的相应输入电感器提供给放大器元件的电流控制电极。 集电电极通过具有公共电源电压的相应电源电感器连接。 每个放大器元件的电流发射电极通过相应的电容器连接到另一个放大器元件的集电电极。 电流发射电极连接到其上可以拾取输出信号的输出连接，并通过相应的输出电感连接到参考电位。 放大器元件的电源电感器感应耦合到输入电感器和相应的其它放大器元件的输出电感器。

    RF Apparatus and Accelerator Having Such an RF Apparatus
    10.
    发明申请
    RF Apparatus and Accelerator Having Such an RF Apparatus 有权
    具有这种RF装置的RF装置和加速器

    公开(公告)号：US20130194773A1

    公开(公告)日：2013-08-01

    申请号：US13877634

    申请日：2011-09-20

    申请人： Oliver Heid ,  Timothy Hughes

    发明人： Oliver Heid ,  Timothy Hughes

    IPC分类号： H05K9/00

    CPC分类号： H05K9/00 ,  H05H7/02 ,  H05H7/18 ,  H05H9/00 ,  H05H2007/227

    摘要： An RF apparatus may include: an RF resonance device having an electrically conductive outer wall, the outer wall comprising a gap extending over its circumference, and an input coupling device having an RF generator, arranged on the outer side of the outer wall of the RF resonance device in the region of the gap, for coupling RF radiation of a particular frequency through the gap into the interior of the RF resonance device, and shielding which externally shields the generator and electrically bridges the gap on the outer side of the outer wall, wherein the shielding is formed as a resonator having a high impedance at the generator frequency

    摘要翻译： RF设备可以包括：具有导电外壁的RF谐振装置，所述外壁包括在其圆周上延伸的间隙，以及具有RF发生器的输入耦合装置，其设置在RF的外壁的外侧上 用于将特定频率的RF辐射通过间隙耦合到RF共振装置的内部，以及外部屏蔽发生器并且电气地桥接外壁的外侧上的间隙的屏蔽， 其中屏蔽形成为在发生器频率处具有高阻抗的谐振器