Comparison between high-energy proton and charged pion induced damage in Lead Tungstate calorimeter crystals - Physics > Instrumentation and DetectorsReport as inadecuate




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Abstract: A Lead Tungstate crystal produced for the electromagnetic calorimeter of theCMS experiment at the LHC was cut into three equal-length sections. The centralone was irradiated with 290 MeV-c positive pions up to a fluence of 5.67 +-0.46x10^13 -cm^2, while the other two were exposed to a 24 GeV-c protonfluence of 1.17 +- 0.11 x 10^13- cm^2. The damage recovery in these crystals,stored in the dark at room temperature, has been followed over two years. Thecomparison of the radiation-induced changes in light transmission for thesecrystals shows that damage is proportional to the star densities produced bythe irradiation.



Author: P. Lecomte, D. Luckey, F. Nessi-Tedaldi, F. Pauss, D. Renker

Source: https://arxiv.org/



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