Measurement of Heavy Nulei beyond Iron in Cosmic Rays with the DAMPE Experiment
H. Sun*,
F. Alemanno,
C. Altomare,
Q. An,
P. Azzarello,
F.C.T. Barbato,
P. Bernardini, X.J. Bi, I. Cagnoli, M.S. Cai, E. Casilli, E. Catanzani, J. Chang, D.Y. Chen, J.L. Chen, Z.F. Chen, Z.X. Chen, P. Coppin, M.Y. Cui, T.S. Cui, Y.X. Cui, I. De Mitri, F. de Palma, A. Di Giovanni, M. Di Santo, Q. Ding, T.K. Dong, Z.X. Dong, G. Donvito, D. Droz, J.L. Duan, K.K. Duan, R.R. Fan, Y.Z. Fan, F. Fang, K. Fang, C.Q. Feng, L. Feng, M. Fernandez Alonso, J.M. Frieden, P. Fusco, M. Gao, F. Gargano, E. Ghose, K. Gong, Y.Z. Gong, D.Y. Guo, J.H. Guo, S.X. Han, Y.M. Hu, G.S. Huang, X.Y. Huang, Y.Y. Huang, M. Ionica, L.Y. Jiang, W. Jiang, Y.Z. Jiang, J. Kong, A. Kotenko, D. Kyratzis, S.J. Lei, W.L. Li, W.H. Li, X. Li, X.Q. Li, Y.M. Liang, C.M. Liu, H. Liu, J. Liu, S.B. Liu, Y. Liu, F. Loparco, C.N. Luo, M. Ma, P.X. Ma, T. Ma, X.Y. Ma, G. Marsella, M.N. Mazziotta, D. Mo, X.Y. Niu, X. Pan, A. Parenti, W.X. Peng, X.Y. Peng, C. Perrina, E. Putti-Garcia, R. Qiao, J.N. Rao, A. Ruina, Z. Shangguan, W.H. Shen, Z.Q. Shen, Z.T. Shen, L. Silveri, J.X. Song, M. Stolpovskiy, H. Su, M. Su, H.R. Sun, Z.Y. Sun, A. Surdo, X.J. Teng, A. Tykhonov, J.Z. Wang, L.G. Wang, S. Wang, X.L. Wang, Y.F. Wang, Y. Wang, Y.Z. Wang, D.M. Wei, J.J. Wei, Y.F. Wei, D. Wu, J. Wu, L.B. Wu, S.S. Wu, X. Wu, Z.Q. Xia, E.H. Xu, H.T. Xu, J. Xu, Z.H. Xu, Z.Z. Xu, Z.L. Xu, G.F. Xue, H.B. Yang, P. Yang, Y.Q. Yang, H.J. Yao, Y.H. Yu, G.W. Yuan, Q. Yuan, C. Yue, J.J. Zang, S.X. Zhang, W.Z. Zhang, Y. Zhang, Y.P. Zhang, Y. Zhang, Y.J. Zhang, Y.Q. Zhang, Y.L. Zhang, Z. Zhang, Z.Y. Zhang, C. Zhao, H.Y. Zhao, X.F. Zhao, C.Y. Zhou and Y. Zhuet al. (click to show)*: corresponding author
Pre-published on:
July 25, 2023
Published on:
September 27, 2024
Abstract
Dark Matter Particle Explorer (DAMPE) is a calorimetric-type, satellite-borne detector. One
important scientific object of DAMPE is to measure the flux of cosmic ray nuclei, which is
fundamental for understanding the cosmic ray origin and propagation mechanism. Heavy nuclei
beyond Iron in Cosmic Rays play an important role for studying the outstanding issues in the grand
cycle of matter in the Galaxy. Thanks to the good charge resolution of the DAMPE PSD detector
(∼0.06e for protons, ∼0.3e for iron), the primary charges in a wide range from proton (Z=1) to
Zirconium (Z=40) can be identified. In seven years of data-taking from 2016 to 2022, DAMPE
has collected data with more than 3 × 10^6 nuclei with Z≥26. In order to reduce the contamination
of Iron in the flux of heavier nuclei in cosmic rays, new charge identification methods have been
studied, and the relativistic rise effect has been corrected. Here, such tools and the methods of
charge identification aiming to the spectrum measurement will be introduced.
DOI: https://doi.org/10.22323/1.444.0174
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