Insight-HXMT/HE望远镜尖峰的消除方法及产生机理
The removal method and generation mechanism of spikes in Insight-HXMT/HE telescope
摘要：
尖峰是Insight-HXMT上的高能X射线望远镜（HE）的原始光变曲线上出现的一些明显的急剧增加，这可能会对能量和功率谱等数据产品产生影响。它们被认为是由大信号产生的假触发器。在本文中，我们研究了尖峰的特点，并提出了两种方法来消除尖峰从原始数据。根据对能量谱和功率谱的不同影响，选择最佳的去尖峰参数，并将其应用于Insight-HXMT数据分析软件中。利用地面备用探测器研究了尖峰脉冲的产生机理，并通过电子学设计降低了尖峰脉冲。
英文摘要：
Spikes are some obvious sharp increases that appear on the raw light curves of High Energy X-ray telescope(HE) onboard Insight-HXMT, which could have influences on the data products like energy and power spectra. They are considered to be fake triggers generated by large signals. In this paper, we study the characteristic of the spikes and propose two methods to remove spikes from the raw data. According to the different influences on energy and power spectra, the best parameters for removing the spikes is selected and used in the Insight-HXMT data analysis software. The generation mechanism of spikes is also studied using the backup HE detectors on ground and the spikes can be reduced by the electronic design.
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