The sat calorimeter of the DELPHI experiment at LEP; results of a module test

Abstract The construction of an electromagnetic calorimeter using scintillating plastic fibres and lead plates is described. The calorimeter is part of the Small Angle Tagger (SAT) of the DELPHI experiment at the LEP collider, recording high-energy electrons, positrons and photons. Results from a test of a module of similar construction are presented. The module was found to have a linear energy response when exposed to electrons of 10–70 GeV, with an energy resolution given by σ / E [%] = (1.16 2 + (11.4/√ E [GeV]) 2 ) 1 2 .