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A 4D diamond detector for HL-LHC and beyond

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DOI: 10.1016/j.nima.2022.167230

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Diamond 3D detectors; Timing detectors; 4D tracking

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  1. INFN as part of the TimeSPOT initiative

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This article presents a tracking detector for future hadronic machines that can withstand extreme levels of radiation while providing high space and time resolutions. The prototype 3D pixel diamond detector, fabricated in Firenze, achieves a time resolution below 100 ps with an efficiency greater than 99% according to test beam results.
Tracking detectors for the future hadronic machines are expected to stand an extreme level of radiation and to provide at the same time high space and time resolutions. Diamond detectors satisfy both of the latter requirements and, in addition, a 3D geometry with thin columnar resistive electrodes orthogonal to the diamond surface enhances the natural radiation tolerance and response speed of this material. We report on the timing characterization of a 3D pixel diamond detector prototype fabricated, by laser graphitization with a 55 x 55 mu m(2) pixel geometry, in Firenze. Results of a tests beam provide a time resolution well below 100 ps with an efficiency larger than 99%.

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