Development of the X'tal Cube: A 3D Position-Sensitive Radiation Detector With All-Surface MPPC Readout
Development of the X'tal Cube: A 3D Position-Sensitive Radiation Detector With All-Surface MPPC Readout
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Xtal Cube 的开发：具有全表面 MPPC 读数的 3D 位置敏感辐射探测器
DOI：
10.1109/tns.2012.2187214
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发表时间：
2012
影响因子：
1.8
通讯作者：
T. Yamaya
中科院分区：
文献类型：
--
作者：
Y. Yazaki;N. Inadama;F. Nishikido;T. Mitsuhashi;M. Suga;K. Shibuya;M. Watanabe;T. Yamashita;E. Yoshida;H. Murayama;T. Yamaya
我们开发了一种新型三维 (3D) 位置敏感辐射探测器，称为 X'tal 立方体。 X'tal立方体由闪烁晶体块和多个多像素光子计数器（MPPC）组成，这些多像素光子计数器耦合在块的所有六个侧面上。该块被分割成立方体，并且在各段之间不使用反射器。因此，源自晶体段的闪烁光沿着晶体段的排列进行三维传播，并被 MPPC 有效地检测到。例如，X'tal 立方体可以用作 PET 系统的检测器元件。我们构建了两个 X'tal 立方体原型，并使用伽马射线源评估了它们的性能。每个原型的晶体块由 Lu2xGd2(1-x)SiO5:Ce (LGSO, x = 0.9) 晶体段的 3D 阵列组成。每个晶体体积为3.0mm×3.0mm×3.0mm。 3.0 mm × 3.0 mm 有源区域的 MPPC 耦合到晶体块的每个表面。在这项工作中，我们展示了通过对两个原型的 MPPC 信号执行简单的安格型计算来识别所有晶体片段。无论辐射的入射角如何，X'tal 立方体都能在三个维度上提供高空间分辨率。
We have developed a new three-dimensional (3D) position sensitive radiation detector, called the X'tal cube. The X'tal cube is composed of a scintillation crystal block and a number of multi-pixel photon counters (MPPCs) which are coupled on all six sides of the block. The block is segmented into cubes and no reflector is used between the segments. Scintillation light originating in a crystal segment accordingly propagates three-dimensionally along the alignment of the crystal segments and is efficiently detected by the MPPCs. The X'tal cube could be used as the detector element of a PET system, for instance. We constructed two prototypes of the X'tal cube and evaluated their performance using gamma-ray sources. The crystal block of each prototype is composed of a 3D array of Lu2xGd2(1-x)SiO5: Ce (LGSO, x = 0.9) crystal segments. Each crystal volume is 3.0 mm × 3.0 mm × 3.0 mm. MPPCs of a 3.0 mm × 3.0 mm active area are coupled to each surface of the crystal block. In this work, we show that all crystal segments are identified by a simple Anger-type calculation performed on the MPPC signals for both prototypes. The X'tal cube provides high spatial resolution in three dimensions regardless of the incident angle of the radiation.
影响因子：
1.8
作者：
T. Yamaya;N. Hagiwara;T. Obi;T. Tsuda;K. Kitamura;T. Hasegawa;H. Haneishi;N. Inadama;E. Yoshida;H. Murayama
通讯作者：
T. Yamaya;N. Hagiwara;T. Obi;T. Tsuda;K. Kitamura;T. Hasegawa;H. Haneishi;N. Inadama;E. Yoshida;H. Murayama