Alessia Barili, L.C. Socrate (Roma)Riccardo Bizzi, L.S. Renato Cartesio (Olevano R.)Mattia Casadibari, ITIS Enrico Fermi (Frascati)Francesca Crocca, L.S. di Ceccano Francesca Di Luzio, L.S. Edoardo Amaldi (Roma)Valentina Filippone, L.S. Francesco D’Assisi (Roma)Elena Gasbarri, L.S. Ascanio Landi (Velletri)Sara Maggio, L.S. Bruno Touschek (Grottaferrata)Flavia Tomao. L.S. Edoardo Amaldi (Roma) 1

Stage at Tor VergataStudents-ResearchersJune 13-17 2016

Particle detectors to study Cosmic Rays

• A little bit of theory

• RPC as the muon trigger in Atlas detector

• RPC performances with cosmic ray

• Atlas data analysis.

Summary

2

Active physics and passive physics:two sides of the same coin!

• What happens with cosmic rays and with accelerators?

• What are the differences?

• What about the time?

• What can you see in the end? 3

4

Which are these particles?

How to detect these particles

5

RPC telescope

• Experimental setup

• Layout and process

• Measurements

• Analysis and plot

6

RPC1

RPC2

RPC3

AND

AND

RPC4

RPC1

RPC2

RPC3

RPC123

RPC1234Ԑ=!"#$%&'!"#$%&

8

5

55

105

155

205

255

305

355

0 1 2 3 4 5 6 7 8 9

InA*10

HV(kV)

0

0,1

0,2

0,3

0,4

0,5

0,6

5,4 5,5 5,6 5,7 5,8 5,9 6 6,1 6,2 6,3 6,4 6,5

Ԑ

Ԑ=!"#$%&'!"#$%& HV(kV)

RPC efficiency

RPC current

Counting rate as a function of detectors distance• Layout

9

Counter

Scintillator

Photomultiplier

AB

Counting rate as a function of detectors distance

1

101

201

301

401

501

0 10 20 30 40 50S(cm)

Counts

10

Atlas data Analysis

11

12

13

14

Conclusion or

beginning?