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

Author

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

Author_Institution

INFN-Florence, Italy

Volume

38

Issue

2

fYear

1991

fDate

4/1/1991 12:00:00 AM

Firstpage

403

Lastpage

407

Abstract

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/π>1 to e/π<1 is obtained as a function of the low-Z material thickness, demonstrating the possibility of achieving the compensation condition e/π=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

Keywords

electron detection and measurement; meson detection and measurement; particle spectrometers; Si-U hadron calorimeter; high-Z materials; lateral shower development; local hardening effect; low-Z material; Collaboration; Electromagnetic radiation; Energy resolution; Face detection; Performance loss; Physics; Predictive models; Riccati equations; Silicon; Superconducting materials;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.289333

Filename

289333