Testing Calorimeter with
cosmic rays
By:
Matteo Pallocca (Liceo Scientifico A.Landi, Velletri)
Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma)
Federica Forcesi (Liceo Scientifico Farnesina, Roma)
Tutor: Marco Mirazita
Technician: Walter Pesci
Stage objectives
Testing a lead/scintillator sampling
calorimeter using cosmic muons.
Calculation of Voltage Curves and
Calibration Line.
Our Detector
PAD 1
CALORIMETER
PMT
PAD 2
Electronic Acquisition System
Power Supply
QDC
Discriminator
Logic AND
FAN IN/ FAN OUT
Delays
Example of a QDC spectrum
Signal Peak,
released by a muon
Background
Voltage Curves
Signal after the equalization
Calibration line
Conclusions
 We set up an acquisition system to test a
calorimeter using cosmic muons.
 We calculated voltage curves for four
different voltages.
 We equalized the 4 central PMTs.
 We calculated the calibration line of our
calorimeter and verified its linear behavior.