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Lu, X.L.; Wang, L.L.; Zhou, H.; Zhang, Z.H.; Wu, L.H.; Liu, H.M.; Amoroso, A.; Baldini Ferroli, R.; Balossino, I.; Bertani, M.; Bettoni, D.; Bianchi, F.; Bortone, A.; Cibinetto, G.; Cotta Ramusino, A.; Cossio, F.; Cotto, G.; Dong, M.Y.; Da Rocha Rolo, M.; De Mori, F.; Destefanis, M.; Dong, J.; Evangelisti, F.; Farinelli, R.; Fava, L.; Felici, G.; Garzia, I.; Gatta, M.; Giraudo, G.; Gramigna, S.; Garbolino, S.; Greco, M.; Guo, A.Q.; Huang, Z.; Hou, Y.R.; Imoehl, W.; Lavezzi, L.; Maggiora, M.; Melendi, F.M.; Malaguti, R.; Mangoni, A.; Marcello, S.; Melchiorri, M.; Mezzadri, G.; Mitchell, R.E.; Ouyang, Q.; Pacetti, S.; Patteri, P.; Rivetti, A.; Shi, R.S.; Scodeggio, M.; Sosio, S.; Spataro, S.; Wang, B.L.; Wang, H.P.; Zhang, Y.; Zhao, J.Y.
Journal of instrumentation, 05/2023, Letnik: 18, Številka: 5Journal Article
Abstract A Cylindrical Gas Electron Multiplier (CGEM) is under construction for the upgrade of the BESIII inner tracker. A preliminary simulation of the CGEM signal before the frond-end electronics has been worked out by making some sampling models from the beforehand Garfield++ simulation. The electronics response functions are implemented making the simulation of CGEM more complete. By comparing the cosmic-ray data acquired by two layers of CGEM and the simulation, the micro-sector effect is simulated and some key parameters in the sampling models are fine tuned in this order: gain, charge sharing, charge fluctuation and electron diffusion. A general agreement is achieved between the cosmic-ray data and the simulation with these improvements.
