从CAKE气球实验测量Cosmic Ray元素组成
Meaurement of Cosmic Ray elemental composition from the CAKE balloon experiment
摘要：
CAKE（Cosmic Abundances below Knee Energies）是一个原型气球实验，用于确定电荷谱和Z $>$ 10的初级宇宙射线（CR）的丰度。它是一种无源仪器，由多层CR 39和Lexan核径迹探测器制成;它对Fe核的几何接受度为$\sim$ 0.7 m $^2$ Sr。文中介绍了初级宇宙射线的扫描和分析策略、离线滤波算法和自动跟踪算法，以及由此得到的CR电荷分布和丰度。
英文摘要：
CAKE (Cosmic Abundances below Knee Energies) was a prototype balloon experiment for the determination of the charge spectra and of abundances of the primary cosmic-rays (CR) with Z$>$10. It was a passive instrument made of layers of CR39 and Lexan nuclear track detectors; it had a geometric acceptance of $\sim$0.7 m$^2$sr for Fe nuclei. Here, the scanning and analysis strategies, the algorithms used for the off-line filtering and for the tracking in automated mode of the primary cosmic rays are presented, together with the resulting CR charge distribution and their abundances.
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