We have constructed a prototype of an electromagnetic calorimeter, for future Linear Collider experiments, alternating 45 layers of lead and scintillator planes. The scintillation light is collected by means of WLS fibers from square cells of 5X5 cm^2. To improve the reconstruction of the shower profile, three silicon pad (~0.9X0.9 cm^2) detector planes have been inserted between lead and scintillator layers at 2, 6 and 12 X0. The prototype has been tested with electron beams at low (50-750 MeV) and high energies (5-50 GeV); a good linearity in response and an energy resolution of ~11.5%/sqrt(E/GeV) for 10 GeV have been achieved. A position resolution of 2.5 mm has also been measured for 10 GeV impinging electrons. The calorimeter particle identification capability has been tested comparing electron and pion beams.
LCcal: a Calorimeter Prototype for Future Linear Colliders
MARGONI, MARTINO;SIMONETTO, FRANCO;
2004
Abstract
We have constructed a prototype of an electromagnetic calorimeter, for future Linear Collider experiments, alternating 45 layers of lead and scintillator planes. The scintillation light is collected by means of WLS fibers from square cells of 5X5 cm^2. To improve the reconstruction of the shower profile, three silicon pad (~0.9X0.9 cm^2) detector planes have been inserted between lead and scintillator layers at 2, 6 and 12 X0. The prototype has been tested with electron beams at low (50-750 MeV) and high energies (5-50 GeV); a good linearity in response and an energy resolution of ~11.5%/sqrt(E/GeV) for 10 GeV have been achieved. A position resolution of 2.5 mm has also been measured for 10 GeV impinging electrons. The calorimeter particle identification capability has been tested comparing electron and pion beams.Pubblicazioni consigliate
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