1. Charge Loss Correction in the Silicon-Tungsten Tracker-Converter for Proton-Helium Charge Identification in the DAMPE Detector
- Author
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Zi Qing Xia, F. C. T. Barbato, M. Di Santo, Kai Kai Duan, D. Mo, A. Ruina, A. Kotenko, Tao Ma, Yong Jie Zhang, Yan Fang Wang, M. N. Mazziotta, H. Su, Yong Qiang Zhang, A. Parenti, Guang Shun Huang, Z. X. Dong, Meng Su, Hui Jun Yao, Jinglai Duan, Xiao Yuan Huang, Yang Haibo, X. J. Teng, Qi Ding, F. de Palma, J. N. Rao, Chang Yi Zhou, Zhi Yong Zhang, J. J. Zang, Lei Feng, Chang Qing Feng, Hao Ran Sun, J. J. Wei, Lihui Wu, Huaguang Wang, Yi Zhang, Yao Ming Liang, Xu Pan, D. D'Urso, Zhan Fang Chen, Yan Zhang, Maria Ionica, Jie Kong, E. Casilli, W. H. Shen, Y. Y. Huang, Shi Jun Lei, Cong Zhao, L. Silveri, P. Fusco, A. De Benedittis, M. S. Cai, Deng Yi Chen, F. Alemanno, Peng Xiong Ma, Z. T. Shen, I. De Mitri, D. Droz, Yang Liu, Q. An, Xiao Yong Ma, W. X. Peng, M. Stolpovskiy, M. Y. Cui, Zi Zong Xu, Sheng Xia Zhang, Jin Zhou Wang, K. Gong, Yi-Zhong Fan, Xiang Li, Hong Yun Zhao, M. M. Salinas, Xiao Yang Niu, Ya Peng Zhang, R. Qiao, Z. Y. Sun, G. Z. Shang, Shuang Xue Han, E. Catanzani, Shu Xin Wang, Wen Hao Li, Peng Yang, Di Wu, En Heng Xu, T. S. Cui, A. Surdo, Jian Wu, Jin Chang, P. Azzarello, Chuan Yue, Ya Qing Yang, Shen Wang, Xin Wu, Fang Fang, Kun Fang, Chuan Ning Luo, Maksym Deliyergiyev, F. Gargano, Jian Hua Guo, D. Kyratzis, Y. Z. Gong, Qiang Yuan, X. Y. Peng, S. B. Liu, Xian Qiang Li, M. M. Ma, Y. F. Wei, Y. H. Yu, Yun Long Zhang, C. Liu, Xiao Lian Wang, V. Gallo, W. Zhang, Wei Jiang, Zhe Zhang, C. Perrina, G. F. Xue, Ying Wang, Yu Xing Cui, Sha Sha Wu, Giacinto Donvito, Y. M. Hu, F. Loparco, J. L. Chen, Hao Ting Dai, L. G. Wang, Dong Ya Guo, Guan Wen Yuan, Hao Liu, Jie Liu, G. Marsella, Andrii Tykhonov, Hai Tao Xu, Xiao Jun Bi, Min Gao, Zun Lei Xu, Zhao Qiang Shen, Xun Feng Zhao, Zhi Hui Xu, Da Ming Wei, Wei Liang Li, P. Bernardini, Tie Kuang Dong, Jing Xing Song, R. R. Fan, and Yuan Zhu Wang
- Subjects
Physics ,Nuclear physics ,chemistry ,Proton ,Physics::Instrumentation and Detectors ,Dark matter ,Detector ,Gamma ray ,chemistry.chemical_element ,Particle ,Charge (physics) ,Helium ,Ion - Abstract
The DArk Matter Particle Explorer (DAMPE) is a satellite-borne experiment, in operation since 2015, aimed at studying high-energy gamma rays and cosmic nuclei fluxes. Of the various sub-detectors in the DAMPE payload, the Silicon-Tungsten tracKer-converter (STK) plays a significant role in the charge measurement of incoming ions. Depending on the angle of inclination of the impinging particle and its position of impact on these strips, the collected charge can spread between the strips which results in some fractional signal loss. The $\eta$ variable is used to identify this spread of charge across the strips and correct for the associated charge loss. This brings us closer to accurate determination of particle charge which is crucial for ensuring a good discrimination between particles. The $\eta$-correction is, therefore, expected to play an important role in the determination of heavy ions by the DAMPE detector. It has helped reduce the proton background for the helium identification in STK by a factor of 1.5 for MIP tracks. It has been sucessfully applied to carbon nuclei and its application to heavier nuclei is currently being studied.
- Published
- 2021
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