Electron-tracking Compton telescope with a gaseous TPC
Electron-tracking Compton telescope with a gaseous TPC
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配备气态 TPC 的电子跟踪康普顿望远镜
DOI：
10.1109/nssmic.2005.1596289
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
T. Tanimori
中科院分区：
文献类型：
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作者：
R. Orito;K. Hattori;H. Kubo;K. Miuchi;T. Nagayoshi;H. Nishimura;Y. Okada;H. Sekiya;A. Takada;A. Takeda;T. Tanimori
我们提出了一种带有气态时间投影室（TPC）和位置敏感闪烁相机的电子跟踪康普顿望远镜。在该探测器中，康普顿反冲电子的能量和方向均由气态TPC精确测量，而康普顿散射伽马射线的能量和方向也由闪烁相机测量。该探测器实现了康普顿散射过程的全程追踪，包括低能反冲电子的散射方向。通过微图案-TPC测量反冲电子的方向，仅在康普顿事件圆的一小部分上确定入射伽马射线。反冲电子的精细跟踪通过运动学实现了高背景抑制效率，这在高背景环境或拥挤源区下具有很大优势。为了演示这一概念，开发了一台原型望远镜。
We propose an electron-tracking Compton telescope with a gaseous time projection chamber (TPC) and a position-sensitive scintillation camera. In this detector, both the energy and direction of the Compton recoil electron are precisely measured by the gaseous TPC, while those of the Compton scattered gamma ray are also measured by the scintillation camera. This detector realizes a full tracing of the Compton scattering process, including the scattered direction of the low energy recoil electron. Measuring the direction of the recoil electron by micro pattern-TPC, the incident gamma ray is determined only on a small segment of the Compton event circle. The fine tracking of recoil electron realizes the high background rejection efficiency by kinematics, which is a great advantage under the high background environment or crowded source region. For demonstrating this concept, a prototype telescope has been developed.