用自举法估计AGATA脉冲波形分析的位置不确定度
Position uncertainties of AGATA pulse-shape analysis estimated via the boostrapping method
摘要：
最先进的分段锗探测器阵列（如AGATA和GRETA）的前所未有的能力来自于执行脉冲形状分析的可能性。通过网格搜索方法将净电荷信号和瞬态电荷信号与数据库进行比较，可以识别片段体积内的$γ$射线相互作用点。它们的精确测定对于随后通过跟踪算法在阵列内重建$γ$射线路径以及因此光谱仪的性能至关重要。本文利用自举技术对$^{60}$ Co放射性源数据进行了推算相互作用点位置不确定性的研究。提取的位置不确定性的一般特征进行了讨论，以及其依赖于各种数量，例如，沉积的能量，发射段的数量和段的几何形状。
英文摘要：
The unprecedented capabilities of state-of-the-art segmented germanium-detector arrays, such as AGATA and GRETA, derive from the possibility of performing pulse-shape analysis. The comparison of the net- and transient-charge signals with databases via grid-search methods allows the identification of the $γ$-ray interaction points within the segment volume. Their precise determination is crucial for the subsequent reconstruction of the $γ$-ray paths within the array via tracking algorithms, and hence the performance of the spectrometer. In this paper the position uncertainty of the deduced interaction point is investigated using the bootstrapping technique applied to $^{60}$Co radioactive-source data. General features of the extracted position uncertainty are discussed as well as its dependence on various quantities, e.g. the deposited energy, the number of firing segments and the segment geometry.
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