Results of prototype studies for a spaghetti calorimeter

D. Acosta, S. Buontempo, L. Calôba, M. Caria, R. Desalvo, A. Ereditato, R. Ferrari, M. Fraternali, G. Fumagalli, O. Gildemeister, F. G. Hartjes, Th H. Henkes, A. Henriques, L. Linssen, M. Livan, A. Maio, L. Mapelli, K. H. Meier, B. Ong, H. P. PaarF. Pastore, M. Pereira, L. Poggioli, C. V. Scheel, J. M. Seixas, A. Simon, M. Sivertz, P. Sonderegger, M. N. Souza, Z. D. Thomé, V. Vercesi, R. Wigmans

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69 Scopus citations

Abstract

In the framework of the LAA project, prototypes for a new type of calorimeter, intended for the detection of both electromagnetic (e.m.) and hadronic showers, muons and missing energy (e.g. neutrinos) at high-luminosity multi-TeV pp colliders, were tested. The detector consists of scintillating plastic fibres embedded in a lead matrix at a volume ratio 1:4, such as to achieve compensation. The optimization of the construction of the detector modules is described, as well as the performance concerning e.m. shower and muon detection and e/π separation. We used electron, pion and muon beams in the energy range 10-150 GeV for this purpose. For the energy resolution of electrons we found 13%/trE, with a constant term of 1%. The signal uniformity was better than 3% over the total surface of projective modules. The signal linearity for e.m. shower detection was better than 1%, and the e/π separation was better than 5 × 10-4 for isolated particles. Channeling effects are negligible, provided that the angle between the incoming particles and the fibre axis is larger than 2°.

Original languageEnglish
Pages (from-to)193-210
Number of pages18
JournalNuclear Inst. and Methods in Physics Research, A
Volume294
Issue number1-2
DOIs
StatePublished - Sep 1 1990

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