Evaluation of HPK $n^+$-$p$ planar pixel sensors for the CMS Phase-2 upgrade

Evaluation of planar silicon pixel sensors with the RD53A readout chip for the Phase-2 Upgrade of the CMS Inner Tracker

“…(a) Efficiency as function of position in a 2 pixel × 2 pixel cell for a 50 µm × 50 µm pitch sensor with a punch-through bias dot irradiated to Φ eq = 5.3 × 10 15 cm −2 for different incident angles and measured at a bias voltage of 250 V. (b) Efficiency as a function of bias voltage for the same module for a variety of incident angles. Irradiated modules are measured at a temperature below −25 °C.These data are also published in ref [12]…”