在国际空间站上用CALET进行超重宇宙射线分析:已建立和发展的程序

A. Ficklin, N. Cannady, B. Rauch, W. Zober
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引用次数: 1

摘要

量热电子望远镜(CALET)已经收集了超过60个月的关于Z=30到40的超高质量(UH)宇宙射线的通量和光谱的不间断数据。利用CALET UH触发器提供的最新数据,我们提出了一种新开发的UH分析,补充了Zober等人在本次会议上提出的正在进行的分析。这项工作引入了一种新的超重型分析(UHA)数据集,该数据集由CALET生产数据生成,可以进行更精简的分析。我们详细介绍了使用26 Fe和14 Si峰的时空校正算法,以提高Z >= 30区域的电荷分辨率。此外,本工作提出了一种新的方法来消除非相对论性/低z核的贡献,使用轨迹跟踪来计算有效的截止刚度,以取代以前使用的垂直Stoermer近似。我们表明,用IGRF13和T05 (Tsyganenko 05)地磁场模型计算的数值计算的有效截止刚度取代近似截止,可以减少从数据集中删除的事件,同时保持Z > 26的改进电荷分辨率。此外,我们引入了Tarle函数峰拟合来执行任何淬火效应所需的电荷校正。我们展示了最新的CALET UH结果,在分析中纳入了这些改进
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ultra-Heavy Cosmic Ray Analysis with CALET on the International Space Station: Established and Developing Procedures
The CALorimetric Electron Telescope (CALET) has collected over 60 months of uninterrupted data on the flux and spectrum of the Ultra-Heavy (UH) cosmic rays from Z=30 to 40. Using the latest data provided from CALET’s UH trigger, we present a newly developed UH analysis complementary to the ongoing analysis presented at this conference by Zober et al. This work introduces a new Ultra-Heavy Analysis (UHA) dataset produced from CALET production data allowing for more streamlined analysis. We detail temporal and spatial correction algorithms using both the 26 Fe and 14 Si peaks to improve charge resolution in the Z >= 30 region. Additionally, this work presents a new method for removing the contributions from non-relativistic/lower-Z nuclei using trajectory tracing to compute effective cutoff rigidities in place of the previously used vertical Stoermer approximation. We show that replacing the approximated cutoffs with numerically calculated effective cutoff rigidities, calculated using the IGRF13 and T05 (Tsyganenko 05) geomagnetic field models, leads to fewer events being removed from the dataset while maintaining improved charge resolution for Z > 26. Furthermore, we introduce Tarle function peak fitting to perform charge corrections needed as a result of any quenching effects. We show the most recent CALET UH results incorporating these improvements in the analysis
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