E-viri
PDF
Recenzirano
Odprti dostop
-
Yang, X.; Alderweireldt, S.; Atanov, N.; Ayoub, M.K.; da Costa, J. Barreiro Guimaraes; García, L. Castillo; Chen, H.; Christie, S.; Cindro, V.; Cui, H.; D’Amen, G.; Davydov, Y.; Fan, Y.Y.; Galloway, Z.; Ge, J.J.; Gee, C.; Giacomini, G.; Gkougkousis, E.L.; Grieco, C.; Grinstein, S.; Grosse-Knetter, J.; Guindon, S.; Han, S.; Howard, A.; Huang, Y.P.; Jin, Y.; Jing, M.Q.; Kiuchi, R.; Kramberger, G.; Kuwertz, E.; Labitan, C.; Lange, J.; Leite, M.; Li, C.H.; Li, Q.Y.; Liu, B.; Liu, J.Y.; Liu, Y.W.; Liang, H.; Liang, Z.J.; Lockerby, M.; Lyu, F.; Mandić, I.; Martinez-Mckinney, F.; Mazza, S.M.; Mikuž, M.; Padilla, R.; Qi, B.H.; Quadt, A.; Ran, K.L.; Ren, H.; Rizzi, C.; Rossi, E.; Sadrozinski, H.F.-W.; Saito, G.T.; Schumm, B.; Schwickardi, M.; Seiden, A.; Shan, L.Y.; Shi, L.S.; Shi, X.; Ferreira, A. Soares Canas; Sun, Y.J.; Tan, Y.H.; Tricoli, A.; Wan, G.Y.; Wilder, M.; Wu, K.W.; Wyatt, W.; Xiao, S.Y.; Yang, T.; Yang, Y.Z.; Yu, C.J.; Zhao, L.; Zhao, M.; Zhao, Y.; Zhao, Z.G.; Zheng, X.X.; Zhuang, X.A.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 11/2020, Letnik: 980, Številka: CJournal Article
The High-Granularity Timing Detector is a detector proposed for the ATLAS Phase II upgrade. The detector, based on the Low-Gain Avalanche Detector (LGAD) technology, will cover the pseudo-rapidity region of 2.4<|η|<4.0 with two end caps on each side and a total area of 6.4 m2. The timing performance can be improved by implanting an internal gain layer that can produce signals with a fast rising edge. It significantly improves the signal-to-noise ratio. The required average timing resolution per track for a minimum ionizing particle is 30 ps at the start and 50 ps at the end of the HL-LHC operation. This is achieved with several layers of LGAD. The innermost region of the detector would accumulate a 1MeV neutron-equivalent fluence up to 2.5× 1015 neq/cm2 including a safety factor of 1.5 before being replaced during the scheduled shutdowns. The addition of this new detector is expected to play an important role in the mitigation of high pile-ups at the HL-LHC. The layout and performance of the various versions of LGAD prototypes produced by Hamamatsu (HPK) have been studied by the ATLAS Collaboration. The breakdown voltages, depletion voltages, inter-pad gaps, collected charge as well as the time resolution have been measured and the production yield of large size sensors has been evaluated.
