Speaker
Description
The radiation-resistant Low Gain Avalanche Detector (LGAD), with high time resolution reaching to 34 ps after neutron irradiated, satisfies the upgrade requirements for ATLAS. To verify the effects of irradiation, low-energy carbon-doped LGAD with 50 $\mu m$ epitaxy, designed by Institute of High Energy Physics (IHEP), has been irradiated with proton at the China Spallation Neutron Source (CSNS) and with neutron at the Jozef Stefan Institute (JSI) at three different doses ranging from 0.8 $\times$ 10$^{15}$n$_\rm{eq}$cm$^{-2}$ to 2.5 $\times$ 10$^{15}$n$_\rm{eq}$cm$^{-2}$. The acceptor removal rate after proton and neutron irradiation is measured at 3.14 $\times$ 10$^{-16}$cm$^2$ and 1.27 $\times$ 10$^{-16}$cm$^2$, respectively, demonstrating strong irradiation resistance of the device. Results about IV performance, collected charge and timing resolution are also studied.
