20.500.12556/RUL-182536 Unusual annealing of charge collection efficiency of silicon strip detectors, ATLAS18, irradiated to high fluences with 23 GeV protons Extensive studies were performed on highly irradiated ATLAS18 mini strip detectors to evaluate their annealing behaviour. Collected charge was measured after several steps of annealing at 60 °C. For detectors irradiated with neutrons or low energy protons the collected charge exhibited a beneficial effect of short-term annealing which was followed by a decrease in charge collection efficiency at longer annealing times. After irradiation with 23 GeV protons to fluences above ɸ$_{eq}$ ∼ 1.2 ⋅ 10$^{15}$ cm$^{−2}$ , the collected charge remained unchanged or decreased after the first few tens of minutes of annealing. Edge-TCT measurements indicated that this unusual annealing behaviour is related to the double-peak electric field profile in the detector. Mixed irradiation with 23 GeV protons and neutrons to fluences matching the expected in the upgraded ATLAS experiment showed this unusual annealing effect will not impact the operation of the ITk strip detector. hadron collider Atlas experiment silicon strip sensors silicon strip detectors charge collection radiation hardness senzorji hadronski trkalnik eksperiment Atlas sevanje true false true Angleški jezik Slovenski jezik Članek v reviji 2026-05-15 10:37:34 2026-05-15 10:37:35 2026-05-16 04:59:42 0000-00-00 00:00:00 2025 0 0 4 str. Vol. 1080, art. 170682 Nov. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.1 1872-9576 10.1016/j.nima.2025.170682 247664899 1-s2.0-S0168900225004838-main.pdf 1-s2.0-S0168900225004838-main.pdf 1 5EA5F5B60ADBADCDF8F914BAD337F4BD 67dfbbd9c3c8da8694f51541464cc129efbfa298449e3404920cbff5b81ff734 5ca1d5eb-5039-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233891 https://www.sciencedirect.com/science/article/pii/S0168900225004838 0 041b014c-5039-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=233890 Fakulteta za matematiko in fiziko 0 0 0