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Page 1: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

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

Page 2: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Stage objectives

Testing a lead/scintillator sampling calorimeter using cosmic muons.

Calculation of Voltage Curves and Calibration Line.

Page 3: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Our DetectorPAD 1

PMT

CALORIMETER

PAD 2

Page 4: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Electronic Acquisition System

Page 5: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Power Supply

Discriminator

Logic AND

Delays

QDC

FAN IN/ FAN OUT

Page 6: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Example of a QDC spectrum

Background

Signal Peak, released by a muon

Page 7: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Voltage Curves

Page 8: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Signal after the equalization

Page 9: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

Calibration line

Page 10: Testing Calorimeter with cosmic rays By: Matteo Pallocca (Liceo Scientifico A.Landi, Velletri) Agnese Capobianco (Liceo Scientifico E.Amaldi, Roma) Federica.

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.


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