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 DetectorPAD 1

PMTCALORIMETER

PAD 2

Electronic Acquisition System

Power Supply

Discriminator

Logic AND

Delays

QDC

FAN IN/ FAN OUT

Example of a QDC spectrum

Background

Signal Peak, released by a muon

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.