Analysis of Individual Cosmic-Ray Proton and Helium Fluxes towards PeV Energies with DAMPE

作者：Arshia Ruina, Paul Coppin, Andrii Kotenko, Peng-Xiong Ma, Mikhail Stolpovskiy, A. Tykhonov, Chuan Yue, Francesca Alemanno, Corrado Altomare, Qi An, P. Azzarello, Felicia Barbato, P. Bernardini, Xiao Jun Bi, Irene Cagnoli, Ming Sheng Cai, Elisabetta Casilli, Enrico Catanzani, Jin Chang, Deng Yi Chen, Jun Ling Chen, Zhan Fang Chen, Zi Xuan Chen, Ming Yang Cui, Tian Cui, Yu Xin Cui, I. De Mitri, Francesco de Palma, A. Di Giovanni, Margherita Di Santo, Qi Ding, Tie Kuang Dong, Zhen Dong, Giacinto Donvito, David Droz, Jing Lai Duan, Kai Kai Duan, Rui Fan, Y. Z. Fan, Fang Fang, Kun Fang, Chang Qing Feng, Lei Feng, Mateo Fernandez Alonso, Jennifer Maria Frieden, P. Fusco, Min Gao, F. Gargano, Essna Ghose, Ke Gong, Yi Zhong Gong, Dong Ya Guo, Jian Guo, Shuang Xue Han, Yi Ming Hu, Guang Shun Huang, Xiao Yuan Huang, Yong Yi Huang, M. Ionica, Lu Yao Jiang, Wei Jiang, Yao Zu Jiang, Jie Kong, Dimitrios Kyratzis, Shi Jun Lei, Wei Liang Li, Wen Hao Li, Xiang Li, Xian Qiang Li, Yao Ming Liang, Cheng Ming Liu, Hao Liu, Jie Liu, Shu Bin Liu, Y. Liu, F. Loparco, Chuan Ning Luo, Miao Ma, Tao Ma, Xiao Yong, G. Marsella, M. N. Mazziotta, Dan Mo, Xiao Yang Niu, Xu Pan, A. Parenti, Wen Xi Peng, Xiao Yan Peng, C. Perrina, Enzo Putti-Garcia, Rui Qiao, Jia Ning Rao, Zhi Shangguan, En Heng Xu, Wei Shen, Zhao Qiang Shen, Zhong Tao Shen, Leandro Silveri, Jing Xing Song, Hong Su, Meng Su, Hao Sun, Zhi Yu Sun, A. Surdo, Xue Jian Teng, Jin Zhou Wang, Lian Guo Wang, Shen Wang, Xiao Lian Wang, Yan Fang Wang, Ying Wang, Yuan Zhu Wang, Da Ming Wei, Jia Ju Wei, Yi Feng Wei, Di Wu, Jian Wu, Li Bo Wu, Sha Sha Wu, X. Wu, Zi Qing Xia, En Heng Xu, Hai Tao Xu, Jing Xu, Zhi Hui Xu, Zi Zong Xu, Zun Lei Xu, Guo Feng Xue, Hai Bo Yang, Peng Yang, Ya Qing Yang, Hui Yao, Yu Hong Yu, Guan Wen Yuan, Qiang Yuan, Jing Jing Zang, Sheng Xia Zhang, Wen Zhang Zhang, Yan Zhang, Ya Peng Zhang, Yi Zhang, Yong Jie Zhang, Yong Qiang Zhang, Yun Long Zhang, Zhe Zhang, Zhiyong Zhang, Cong Zhao, Hong Zhao, Xun Feng Zhao, Chang Yi Zhou, Yan Zhu · 年份：2023 · DOI：10.22323/1.444.0170 · 被引用次数：5 · 研究领域：Dark Matter and Cosmic Phenomena、Radiation Therapy and Dosimetry、Particle Detector Development and Performance

The DArk Matter Particle Explorer (DAMPE) is a satellite-borne experiment, in operation since 2015, aimed at studying cosmic rays and high-energy gamma rays. Proton and helium are the first- and second-most abundant components in cosmic rays. Given their smaller interaction cross sections with the interstellar medium, compared to heavier nuclei, they can travel larger distances, thereby becoming important probes to cosmic-ray sources as well as acceleration and propagation mechanisms. Recently, in the DAMPE collaboration, machine learning (ML) techniques were developed and deployed to improve particle tracking and identification and correct for the calorimeter readout saturation at high energies. This work presents a direct measurement of the energy spectra of cosmic-ray protons and helium nuclei, using 84 and 81 months of data, respectively, recorded by DAMPE. Application of the above-mentioned ML techniques helps in extending the spectra to higher kinetic energies than those previously reported by DAMPE.