Speaker
Description
The ATLAS ITk Strip detector is a planned tracker upgrade for the High-Luminosity LHC which utilizes n$^+$-in-p silicon sensors fabricated by Hamamatsu Photonics with 300 $\mu$m signal-generation thickness and approximately 75 $\mu$m strip pitch. Measurements and simulations are presented for silicon strip sensors and test devices, including after irradiation to fluences up to 1.4*10$^{15}$ 1-MeV neq/cm$^2$. Two-dimensional sensor simulations are developed with Sentaurus TCAD, informed using detailed optical and electrical measurements, and interfaced to AllPix$^2$ for detector simulations. Charge traps from the manufacturing process and from radiation-induced defects are studied, both through a parameterization of traps in the surface and bulk and by the direct measurement of traps using deep-level transient spectroscopy.
