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arXiv · 1903.04838

Performance of Irradiated RD53A 3D Pixel Sensors

S. Terzo·M. Chmeissani·G. Giannini·S. Grinstein·M. Manna·G. Pellegrini·D. Quirion·D. Vazquez Furelos
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Abstract

The ATLAS experiment at the LHC will replace its current inner tracker system for the HL-LHC era. 3D silicon pixel sensors are being considered as radiation-hard candidates for the innermost layers of the new fully silicon-based tracking detector. 3D sensors with a small pixel size of $\mathrm{50 \times 50~\mu m^{2}}$ and $\mathrm{25 \times 100~\mu m^{2}}$ compatible with the first prototype ASIC for the HL-LHC, the RD53A chip, have been studied in beam tests after uniform irradiation to $\mathrm{5 \times 10^{15}~n_{eq}/cm^{2}}$. An operation voltage of only 50 V is needed to achieve a 97% hit efficiency after this fluence.

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S. Terzo, M. Chmeissani, G. Giannini, S. Grinstein, M. Manna, G. Pellegrini, D. Quirion, D. Vazquez Furelos. 2019-03-12. Performance of Irradiated RD53A 3D Pixel Sensors. https://doi.org/10.1088/1748-0221/14/06/p06005

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