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    • 5. 发明公开
    • APPARATUS AND METHODS FOR GAMMA RAY DETECTION
    • 伽马射线检测装置和方法
    • EP3092510A1
    • 2016-11-16
    • EP14812795.4
    • 2014-12-10
    • Symetrica Limited
    • RAMSDEN, David
    • G01T1/203
    • G01T1/2033G01T1/2002G01T1/2018G01T1/203
    • A gamma ray detector is described. The detector comprises a plastic scintillation body for receiving gamma rays and generating photons in response thereto. The scintillation body is in the form of a truncated cone defined by a base surface and an end surface separated along an axis of extent of the scintillation body with a lateral surface extending therebetween. A photodetector is optically coupled to the base surface of the scintillation body so as to detect photons generated by gamma ray interaction events within the scintillation body. A specular reflector is provided adjacent, but separated from, the lateral surface of the scintillation body so as to reflect photons that leave the scintillation body through the lateral surface back into the scintillation body.
    • 描述了伽玛射线探测器。 探测器包括塑料闪烁体,用于接收伽马射线并响应于此产生光子。 闪烁体呈截头圆锥体的形式,所述截头圆锥体由基底表面和沿着闪烁体的延伸轴线隔开的端表面限定,所述闪烁体的延伸方向上具有侧表面。 光探测器光学耦合到闪烁体的基面以便探测由闪烁体内的伽马射线相互作用事件产生的光子。 镜面反射器设置在闪烁体的侧表面附近,但与闪烁体的侧表面分开,以便将通过侧表面离开闪烁体的光子反射回闪烁体。
    • 9. 发明公开
    • Device and method for discriminating cerenkov and scintillation radiation
    • Vorrichtung und Methode zur Unterscheidung von Cerenkovstrahlung und Szintillationsstrahlung
    • EP1857836A1
    • 2007-11-21
    • EP06290797.7
    • 2006-05-15
    • ELDIM SA
    • Boher, PierreLeroux, Thierry
    • G01T1/203G01T1/22G01T1/29
    • G01T1/169G01T1/20G01T1/22
    • The invention relates to a device for discriminating Cerenkov and scintillation radiation and a beam inspection device, comprising an inspection head comprising a scintillator (13) and at least one ionizing radiation diffuser block (15a, 15b), a device (1) for discriminating Cerenkov and scintillation radiation, and an imaging system (17) for forming an image from at least a part of the inspection head. The invention furthermore relates to a corresponding method. In order to suppress spurious Cerenkov radiation contributions to the scintillation radiation the device comprises periodically arranged first and second filters (3, 5), having different relative absorption properties with respect to scintillation radiation and ionizing radiation.
    • 本发明涉及一种用于鉴别切伦科夫和闪烁辐射的装置和一种光束检查装置,其包括一个包括闪烁体(13)和至少一个电离辐射漫射块(15a,15b)的检查头,用于鉴别切伦科夫 和闪烁辐射,以及用于从所述检查头的至少一部分形成图像的成像系统(17)。 本发明还涉及相应的方法。 为了抑制对闪烁辐射的假切伦科夫辐射的贡献,该装置包括周期性布置的第一和第二滤光器(3,5),其相对于闪烁辐射和电离辐射具有不同的相对吸收特性。
    • 10. 发明公开
    • GAMMA RAY DETECTORS
    • GAMMASTRAHLEN-DETEKTOREN
    • EP1749220A1
    • 2007-02-07
    • EP05742167.9
    • 2005-05-13
    • Symetrica Limited
    • RAMSDEN, David Symetrica LimitedDALLIMORE, Matthew
    • G01T1/203
    • A gamma ray detector (50) comprises a plastic scintillation body (52) arranged to receive incident gamma rays to be detected. Photons are generated in response to the gamma rays by excitation and de-excitation processes in the scintillation body. The photons are detected using at least one photodetector (56) which generates an output signal representative of the energy of the gamma rays. The scintillation body has a detection surface to receive the gamma rays and a thickness in a direction substantially orthogonal to the detection surface that is not greater than 5 cm. Deconvolution techniques can be used to improve the output signal; the thinness of the scintillation body allows sufficiently accurate results to be obtained that individual isotopes can be readily identified. The detector can be usefully employed in portal radiation monitors.
    • 伽马射线检测器(50)包括布置成接收待检测的入射伽马射线的塑料闪烁体(52)。 光子通过闪烁体中的激发和去激发过程响应于伽马射线而产生。 使用至少一个光电检测器(56)检测光子,该光电检测器产生代表伽马射线能量的输出信号。 闪烁体具有用于接收伽马射线的检测表面和与检测表面基本正交的方向上的厚度不大于5cm。 去卷积技术可以用来改善输出信号; 闪烁体的薄度允许获得足够准确的结果,可以容易地识别各个同位素。 检测器可以有效地用于门式辐射监测器。