Radiation campaign of HPK prototype LGAD sensors for the High-Granularity Timing Detector (HGTD)

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 979; no. C; p. 164382
• Main Authors: Shi, X., Ayoub, M.K., da Costa, J. Barreiro Guimarães, Cui, H., Kiuchi, R., Fan, Y., Han, S., Huang, Y., Jing, M., Liang, Z., Liu, B., Liu, J., Lyu, F., Qi, B., Ran, K., Shan, L., Shi, L., Tan, Y., Wu, K., Xiao, S., Yang, T., Yang, Y., Yu, C., Zhao, M., Zhuang, X., García, L. Castillo, Gkougkousis, E.L., Grieco, C., Grinstein, S., Leite, M., Saito, G.T., Howard, A., Cindro, V., Kramberger, G., Mandić, I., Mikuž, M., d’Amen, G., Giacomini, G., Rossi, E., Tricoli, A., Chen, H., Ge, J., Li, C., Liang, H., Yang, X., Zhao, L., Zhao, Z., Zheng, X., Atanov, N., Davydov, Y., Grosse-Knetter, J., Lange, J., Quadt, A., Schwickardi, M., Alderweireldt, S., Ferreira, A.S.C., Guindon, S., Kuwertz, E., Rizzi, C., Christie, S., Galloway, Z., Gee, C., Jin, Y., Labitan, C., Lockerby, M., Mazza, S.M., Martinez-Mckinney, F., Padilla, R., Ren, H., Sadrozinski, H.F.-W., Schumm, B., Seiden, A., Wilder, M., Wyatt, W., Zhao, Y., Han, D., Zhang, X.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.11.2020; Elsevier
• Subjects: Low Gain Avalanche Detector; Radiation; Timing detector; Low Gain Avalanche Detector; Radiation; Timing detector
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2020.164382

We report on the results of a radiation campaign with neutrons and protons of Low Gain Avalanche Detectors (LGAD) produced by Hamamatsu (HPK) as prototypes for the High-Granularity Timing Detector (HGTD) in ATLAS. Sensors with an active thickness of 50μm were irradiated in steps of roughly 2× up to a fluence of 3×1015neqcm−2. As a function of the fluence, the collected charge and time resolution of the irradiated sensors will be reported for operation at −30 °C.