Poster P1: Hight Granularity Timing Detector




The large increase of pile-up interactions is one of the main experimental challenger for HL-LHC physics program. Covering the pseudo-rapidity region between 2.4 and 4.0, the Hight Granularity Timing Detector (HGTD) is therefore propose for the ATLAS Phase-II upgrade. Using the ability to distinguish between events by high-precision timing informations, HGTD is powerful to mitigate the effect of pile-up. One key element for this mitigation is to know the t0 of each individual channel (about 3.6 millions channels), which is important to achieve the time resolution of about 10 ps. In this presentation, the time calibration methodology and estimate its performances using dedicated simulations will be presented.




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