DAMPE空间飞行任务:第一批数据
DAMPE space mission: first data
摘要:
DAMPE(暗物质粒子探测器)卫星于2015年12月17日发射,并在几天后开始数据采集操作。DAMPE具有大的几何因子($\sim~0.3\ m^2\ sr$),并提供对电子、伽马射线和原子核的良好跟踪、量热和电荷测量。这将允许精确测量宇宙射线光谱,从几十个$GeV$到大约$100\ TeV$。特别地,与先前的实验相比,将以更高的精度探索$1-100\ TeV$之间的能量区域。各种子探测器允许在大的(主要是质子诱导的)背景上有效地识别电子信号。因此,将以从少量$GeV$到少量$TeV$的优异分辨率测量全电子谱,从而提供识别附近源的可能贡献的机会。报告介绍了飞行任务的目标和现状,以及在轨探测器的性能和来自空间的第一批数据。
英文摘要:
The DAMPE (DArk Matter Particle Explorer) satellite was launched on December 17, 2015 and started its data taking operation a few days later. DAMPE has a large geometric factor ($\sim~0.3\ m^2\ sr$) and provides good tracking, calorimetric and charge measurements for electrons, gammas rays and nuclei. This will allow precise measurement of cosmic ray spectra from tens of $GeV$ up to about $100\ TeV$. In particular, the energy region between $1-100\ TeV$ will be explored with higher precision compared to previous experiments. The various subdetectors allow an efficient identification of the electron signal over the large (mainly proton-induced) background. As a result, the all-electron spectrum will be measured with excellent resolution from few $GeV$ up to few $TeV$, thus giving the opportunity to identify possible contribution of nearby sources. A report on the mission goals and status is presented, together with the on-orbit detector performance and the first data coming from space.
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