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Evidence for compensation and study of lateral shower development in Si/U hadron calorimeters

By: Furetta, C.; Guibellino, P.; Borchi, E.; Vismara, L.; Villari, A.; Seidman, A.; Salvato, G.; Riccati, L.; Rancoita, P.G.; Ramello, L.; Penzo, A.; Pensotti, S.; Paludetto, R.; Manoukian-Bertrand, C.; Macii, R.; Leroy, C.; Lamarche, F.;

1991 / IEEE

Description

This item was taken from the IEEE Periodical ' Evidence for compensation and study of lateral shower development in Si/U hadron calorimeters ' In an Si/U hadron calorimeter, using a combination of low-Z and high-Z materials for the absorber allows the reduction of the calorimeter response to the electromagnetic component of the incoming hadronic showers (the local hardening effect). As a result, a ratio varying from e/ pi >1 to e/ pi <1 is obtained as a function of the low-Z material thickness, demonstrating the possibility of achieving the compensation condition e/ pi =1. The findings presented support the choice, for the next generation of colliders, of a hadron calorimeter with silicon as the active medium and a combination of low-Z and high-Z materials as the absorbers. The experiments performed to obtain the findings presented are described in detail.<>