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Data collected with these systems between 2015 and 2018 are\n  analysed to measure the degradation of the optical instrumentation across Run\u00a02.\n  Moreover, a simulation of the total ionising dose in the calorimeter is employed to study and model the degradation profile\n  as a function of the exposure conditions, both integrated dose and dose rate. The measurement of the relative light output loss in Run\u00a02\n  is presented and extrapolations to future scenarios are drawn based on current data. The impact of radiation damage on the cell response uniformity is also analysed.<\/jats:p>","DOI":"10.1088\/1748-0221\/20\/06\/p06006","type":"journal-article","created":{"date-parts":[[2025,6,6]],"date-time":"2025-06-06T16:18:41Z","timestamp":1749226721000},"page":"P06006","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Study of the radiation hardness of the ATLAS Tile Calorimeter optical instrumentation with Run 2 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