Abstract: The high-luminosity upgrade of the ATLAS and CMS experiments includes dedicated sub-detectors to perform the time-stamping of minimum ionizing particles (MIPs). These detectors will be exposed up to fluences in the range of and require a time resolution per detecting layer of 30 ps, for non-irradiated sensors, to ps (depending on the exposed fluences) for sensors at the end of their lifetime. To cope with these requirements, the low-gain avalanche diode (LGAD) has been chosen as the baseline detection technology. In this article, an in-depth radiation tolerance study on LGADs manufactured at IMB-CNM using a so-called shallow junction is presented. Proton irradiation at CERN-PS up to fluences of and neutron irradiation at JSI-Ljubljana up to were performed. Two different active thicknesses were studied: and Gain degradation, operation stability, and timing performance were evaluated.

Autoría

Descargar referencia