Lange, J; Grinstein, S; Manna, M; Pellegrini, G; Quirion, D; Terzo, S; D Vázquez Furelos
arXiv (Cornell University),
07/2017
Paper, Journal Article
A new generation of 3D silicon pixel detectors with a small pixel size of 50\(\times\)50 and 25\(\times\)100 \(\mu\)m\(^{2}\) is being developed for the HL-LHC tracker upgrades. The radiation hardness of such detectors was studied in beam tests after irradiation to HL-LHC fluences up to \(1.4\times10^{16}\) n\(_{\mathrm{eq}}\)/cm\(^2\). At this fluence, an operation voltage of only 100 V is needed to achieve 97% hit efficiency, with a power dissipation of 13 mW/cm\(^2\) at -25\(^{\circ}\)C, considerably lower than for previous 3D sensor generations and planar sensors.
