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Abstract: An analog hadron calorimeter AHCAL prototype of 5.3 nuclear interactionlengths thickness has been designed and constructed by members of the CALICECollaboration. The AHCAL prototype consists of a 38-layer sandwich structure ofsteel plates and 7608 scintillator tiles that are read out bywavelength-shifting fibres coupled to SiPMs. The signal is amplified and shapedwith a custom-designed ASIC. A calibration-monitoring system based on LED lightwas developed to monitor the SiPM gain and to measure the full SiPM responsecurve in order to correct for non-linearity. Ultimately, the physics goals arethe study of hadronic shower shapes and testing the concept of particle flow.The technical goal consists of measuring the performance and reliability of7608 SiPMs. The AHCAL prototype was commissioned in test beams at DESY, CERNand FNAL, and recorded hadronic showers, electron showers and muons atdifferent energies and incident angles.



Autor: Shaojun Lu

Fuente: https://arxiv.org/







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