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29 March 2024
 
  » arxiv » 1903.4838

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Performance of Irradiated RD53A 3D Pixel Sensors
S. Terzo ; M. Chmeissani ; G. Giannini ; S. Grinstein ; M. Manna ; G. Pellegrini ; D. Quirion ; D. Vazquez Furelos ;
Date 12 Mar 2019
AbstractThe 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 $mathrm{50 imes 50~mu m^{2}}$ and $mathrm{25 imes 100~mu m^{2}}$ compatible with the first prototype ASIC for the HL-LHC, the RD53A chip, have been studied in beam tests after uniform irradiation to $mathrm{5 imes 10^{15}~n_{eq}/cm^{2}}$. An operation voltage of only 50 V is needed to achieve a 97% hit efficiency after this fluence.
Source arXiv, 1903.4838
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