M. S. Cai^11,12, E. Casilli^7,8, E. Catanzani¹³, J. Chang^11,12, D. Y. Chen¹¹, J. L. Chen¹⁴, Z. F. Chen^11,12, P. Coppin⁶, M. Y. Cui¹¹, T. S. Cui¹⁵, Y. X. Cui^11,12, H. T. Dai^4,5, A. De Benedittis^7,8,‡, I. De Mitri^1,2, F. de Palma^7,8, M. Deliyergiyev⁶, A. Di Giovanni^1,2, M. Di Santo^1,2, Q. Ding^11,12, T. K. Dong¹¹, Z. X. Dong¹⁵, G. Donvito³, D. Droz⁶, J. L. Duan¹⁴, K. K. Duan¹¹, R. R. Fan⁹, Y. Z. Fan^11,12, F. Fang¹⁴, K. Fang⁹, C. Q. Feng^4,5, L. Feng¹¹, M. Fernandez Alonso^1,2, J. M. Frieden^6,§, P. Fusco^3,16, M. Gao⁹, F. Gargano³, K. Gong⁹, Y. Z. Gong¹¹, D. Y. Guo⁹, J. H. Guo^11,12, S. X. Han¹⁵, Y. M. Hu¹¹, G. S. Huang^4,5, X. Y. Huang^11,12, Y. Y. Huang¹¹, M. Ionica¹³, L. Y. Jiang¹¹, Y. Z. Jiang¹³, W. Jiang¹¹, J. Kong¹⁴, A. Kotenko⁶, D. Kyratzis^1,2,∥, S. J. Lei¹¹, W. H. Li^11,12, W. L. Li¹⁵, X. Li¹¹, X. Q. Li¹⁵, Y. M. Liang¹⁵, C. M. Liu^4,5, H. Liu¹¹, J. Liu¹⁴, S. B. Liu^4,5, Y. Liu¹¹, F. Loparco^3,16, C. N. Luo^11,12, M. Ma¹⁵, P. X. Ma¹¹, T. Ma¹¹, X. Y. Ma¹⁵, G. Marsella^7,8,¶, M. N. Mazziotta³, D. Mo¹⁴, M. Muoz Salinas⁶, X. Y. Niu¹⁴, X. Pan^11,12, A. Parenti^1,2, W. X. Peng⁹, X. Y. Peng¹¹, C. Perrina^6,§, E. Putti-Garcia⁶, R. Qiao⁹, J. N. Rao¹⁵, A. Ruina⁶, Z. Shangguan¹⁵, W. H. Shen¹⁵, Z. Q. Shen¹¹, Z. T. Shen^4,5, L. Silveri^1,2, J. X. Song¹⁵, M. Stolpovskiy⁶, H. Su¹⁴, M. Su¹⁷, H. R. Sun^4,5, Z. Y. Sun¹⁴, A. Surdo⁸, X. J. Teng¹⁵, A. Tykhonov⁶, J. Z. Wang⁹, L. G. Wang¹⁵, S. Wang¹¹, S. X. Wang¹¹, X. L. Wang^4,5, Y. Wang^4,5, Y. F. Wang^4,5, Y. Z. Wang¹¹, Z. M. Wang^1,2,**, D. M. Wei^11,12, J. J. Wei¹¹, Y. F. Wei^4,5, D. Wu⁹, J. Wu^11,12, L. B. Wu^1,2,††, S. S. Wu¹⁵, X. Wu⁶, Z. Q. Xia¹¹, H. T. Xu¹⁵, J. Xu¹¹, Z. H. Xu^11,12, Z. L. Xu¹¹, E. H. Xu^4,5, Z. Z. Xu^4,5, G. F. Xue¹⁵, H. B. Yang¹⁴, P. Yang¹⁴, Y. Q. Yang¹⁴, H. J. Yao¹⁴, Y. H. Yu¹⁴, G. W. Yuan^11,12, Q. Yuan^11,12, C. Yue¹¹, J. J. Zang^11,‡‡, S. X. Zhang¹⁴, W. Z. Zhang¹⁵, Yan Zhang¹¹, Yi Zhang^11,12, Y. J. Zhang¹⁴, Y. L. Zhang^4,5, Y. P. Zhang¹⁴, Y. Q. Zhang¹¹, Z. Zhang¹¹, Z. Y. Zhang^4,5, C. Zhao^4,5, H. Y. Zhao¹⁴, X. F. Zhao¹⁵, C. Y. Zhou¹⁵, and Y. Zhu¹⁵ (DAMPE Collaboration^*)

• ¹Gran Sasso Science Institute (GSSI), Via Iacobucci 2, I-67100 L’Aquila, Italy
• ²Istituto Nazionale di Fisica Nucleare (INFN)—Laboratori Nazionali del Gran Sasso, I-67100 Assergi, L’Aquila, Italy
• ³Istituto Nazionale di Fisica Nucleare (INFN)—Sezione di Bari, I-70125, Bari, Italy
• ⁴State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
• ⁵Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
• ⁶Department of Nuclear and Particle Physics, University of Geneva, CH-1211 Geneva, Switzerland
• ⁷Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100, Lecce, Italy
• ⁸Istituto Nazionale di Fisica Nucleare (INFN)—Sezione di Lecce, I-73100, Lecce, Italy
• ⁹Institute of High Energy Physics, Chinese Academy of Sciences, Yuquan Road 19B, Beijing 100049, China
• ¹⁰University of Chinese Academy of Sciences, Yuquan Road 19A, Beijing 100049, China
• ¹¹Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210023, China
• ¹²School of Astronomy and Space Science, University of Science and Technology of China, Hefei 230026, China
• ¹³Istituto Nazionale di Fisica Nucleare (INFN)—Sezione di Perugia, I-06123 Perugia, Italy
• ¹⁴Institute of Modern Physics, Chinese Academy of Sciences, Nanchang Road 509, Lanzhou 730000, China
• ¹⁵National Space Science Center, Chinese Academy of Sciences, Nanertiao 1, Zhongguancun, Haidian district, Beijing 100190, China
• ¹⁶Dipartimento di Fisica “M. Merlin” dell’Università e del Politecnico di Bari, I-70126, Bari, Italy
• ¹⁷Department of Physics and Laboratory for Space Research, the University of Hong Kong, Pok Fu Lam, Hong Kong SAR, China

• ^*dampe@pmo.ac.cn
• ^†Present address: Dipartimento di Matematica e Fisica E. De Giorgi, Università del Salento, I-73100, Lecce, Italy and Istituto Nazionale di Fisica Nucleare (INFN)—Sezione di Lecce, I-73100, Lecce, Italy.
• ^‡Present address: Istituto Nazionale Fisica Nucleare (INFN), Sezione di Napoli, IT-80126 Napoli, Italy.
• ^§Present address: Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
• ^∥Present address: Department of Nuclear and Particle Physics, University of Geneva, CH-1211 Geneva, Switzerland.
• ^¶Present address: Dipartimento di Fisica e Chimica “E. Segrè”, Università degli Studi di Palermo, via delle Scienze ed. 17, I-90128 Palermo, Italy.
• ^**Present address: Shandong Institute of Advanced Technology (SDIAT), Jinan, Shandong, 250100, China.
• ^††Present address: Institute of Deep Space Sciences, Deep Space Exploration Laboratory, Hefei 230026, China.
• ^‡‡Also at School of Physics and Electronic Engineering, Linyi University, Linyi 276000, China.