Author/Authors :
Nicholls، نويسنده , , T and Hajduk، نويسنده , , L and Janczur، نويسنده , , W and Rybicki، نويسنده , , K and Claxton، نويسنده , , B and Dowdell، نويسنده , , J and Deckers، نويسنده , , H and Deckers، نويسنده , , T and Dirkmann، نويسنده , , M and Hütte، نويسنده , , M and Hutter، نويسنده , , H and Kolanoski، نويسنده , , H and Pِschl، نويسنده , , R and Schuhmacher، نويسنده , , A and Wacker، نويسنده , , K and Walther، نويسنده , , A and Wegener، نويسنده , , D an، نويسنده ,
Abstract :
The properties of final modules of a high resolution lead/scintillating-fibre calorimeter to upgrade the backward region of the H1 detector were studied with electrons in the energy range from 2–60 GeV. The electromagnetic calorimeter consists of scintillating fibres with a diameter of 0.5 mm embedded in a lead matrix. This small fibre radius, in combination with a lead-to-fibre ratio of 2.27:1, ensures excellent energy resolution which has been measured to be δ/E=7.1%/ E/GeV ⊕ 1.0%. The spatial resolution as a function of energy for impact points at the center of a cell is given by 4.4 mm/ E/GeV + 1.0 mm. The time resolution was found to be better than 0.4 ns.
