PoS - Proceedings of Science
Volume 448 - The 32nd International Workshop on Vertex Detectors (VERTEX2023) - Posters Session
Investigation of low gain avalanche detectors exposed to proton fluences beyond $10^{15}$ $n_{eq} cm^{-2}$
J. Sorenson*, M.R. Hoeferkamp, G. Kramberger, S. Seidel and J. Si
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Pre-published on: March 12, 2024
Published on: June 25, 2024
Low gain avalanche detectors (LGADs) deliver excellent timing resolution, which can mitigate mis-assignment of vertices associated with pileup at the High Luminosity LHC and other future hadron colliders. The most highly irradiated LGADs will be subject to 2.5 × 1015neq/cm^2 of hadronic fluence during HL-LHC operation; their performance must tolerate this. Hamamatsu Photonics K.K. and Fondazione Bruno Kessler LGADs have been irradiated with 400 and 500 MeV protons respectively in several steps up to 1.5 × 1015neq/cm^2. Measurements of the acceptor removal constants of the gain layers, evolution of the timing resolution and charge collection with damage, and inter-channel isolation characteristics, for a variety of design options, are presented here.
DOI: https://doi.org/10.22323/1.448.0068
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