基于在轨数据确定的 DAMPE 硅径迹探测器内部对齐与位置分辨率
仪器与探测器
2018-03-23 v2
摘要
暗物质粒子探测卫星（DAMPE）是一台星载粒子探测器，旨在探测几 GeV 至 10 TeV 能区的电子和伽马射线，以及 10 GeV 至 100 TeV 间的宇宙线质子与核成分。硅-钨径迹转换体是 DAMPE 的关键组件，它可估算转换为电子-正电子对的入射光子方向，并鉴别宇宙线粒子的轨迹与电荷（Z）。它由 768 个硅微条传感器组装于 6 个双层中，总有效面积 6.6 m。硅平面与三层钨板交错排列，使径迹探测器内约有一辐射长度的物质。径迹探测器的内部对齐参数已利用在轨的非簇射质子与氦核确定。我们描述了对齐流程，并给出了位置分辨率与对齐稳定性测量结果。
引用
@article{arxiv.1712.02739,
title = {Internal alignment and position resolution of the silicon tracker of DAMPE determined with orbit data},
author = {A. Tykhonov and G. Ambrosi and R. Asfandiyarov and P. Azzarello and P. Bernardini and B. Bertucci and A. Bolognini and F. Cadoux and A. D'Amone and A. De Benedittis and I. De Mitri and M. Di Santo and Y. F. Dong and M. Duranti and D. D'Urso and R. R. Fan and P. Fusco and V. Gallo and M. Gao and F. Gargano and S. Garrappa and K. Gong and M. Ionica and D. La Marra and S. J. Lei and X. Li and F. Loparco and G. Marsella and M. N. Mazziotta and W. X. Peng and R. Qiao and M. M. Salinas and A. Surdo and V. Vagelli and S. Vitillo and H. Y. Wang and J. Z. Wang and D. Wu and X. Wu and F. Zhang and J. Y. Zhang and H. Zhao and S. Zimmer},
journal= {arXiv preprint arXiv:1712.02739},
year = {2018}
}