The AGATA Project
The AGATA Project
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阿加塔项目
DOI：
10.1088/0954-3899/31/10/076
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Simpson
中科院分区：
文献类型：
--
作者：
J. Simpson
几十年来，对原子核量子态伽马射线衰变的研究在发现和阐明各种现象方面发挥了关键作用。伽马射线探测设备的每一项重大技术进步都带来了对原子核结构的重大新见解。迄今为止，这些进展最终导致了 4π 逃逸抑制光谱仪阵列的构建。全球共识是，γ射线光谱学的下一个重大步骤是放弃物理抑制屏蔽的概念，并利用电分段Ge晶体中的γ射线能量跟踪技术实现4πGe球的最终目标。由此产生的光谱仪将具有无与伦比的核电磁辐射检测能力。相对于其前身，它从外来核事件中选择最弱信号的灵敏度将提高多达 1000 倍。它将具有前所未有的角分辨率，使其非常适合高能量分辨率，即使在反冲速度高达光速的 50% 时也是如此。因此，它非常适合与新一代放射性束加速器或现有稳定束设施结合使用。在欧洲，已经建立了合作关系来构建称为 AGATA（高级伽马跟踪阵列）的 4π 跟踪光谱仪。此次合作签署了项目第一阶段的谅解备忘录，以进行必要的研究和开发，以最终确定伽马射线跟踪技术，从而全面指定完整的 4π 光谱仪。将报告 AGATA 项目第一阶段的状况。
For decades, the study of the gamma-ray decay from quantal states of the atomic nucleus has played a pivotal role in discovering and elucidating a wide range of phenomena. Each major technical advance in gamma-ray detection devices has resulted in significant new insights into the structure of nuclei. To date, these advances have culminated in the construction of 4π arrays of escape-suppressed spectrometers. The global consensus of opinion is that the next major step in γ-ray spectroscopy involves abandoning the concept of a physical suppression shield and achieving the ultimate goal of a 4π Ge ball using the technique of γ-ray energy tracking in electrically segmented Ge crystals. The resulting spectrometer will have an unparalleled level of detection power for nuclear electromagnetic radiation. Its sensitivity for selecting the weakest signals from exotic nuclear events will be enhanced by a factor of up to 1000 relative to its predecessors. It will have an unprecedented angular resolution making it ideally suited for high-energy resolution even at recoil velocities up to 50% of the velocity of light. Therefore, it is ideally suited to be used in conjunction with the new generation of radioactive beam accelerators or existing stable beam facilities. In Europe, a collaboration has been established to construct a 4π tracking spectrometer called AGATA (advanced gamma tracking array). This collaboration has signed a Memorandum of Understanding for the first phase of the project to perform the research and development necessary to finalize the technology for gamma-ray tracking and hence fully specify the full 4π spectrometer. The status of this first phase of the AGATA project will be reported.