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Status of the EEE telescopes in Catania Paola La Rocca II Conferenza dei Progetti del Centro Fermi Rome - April 20th, 2012.

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Presentation on theme: "Status of the EEE telescopes in Catania Paola La Rocca II Conferenza dei Progetti del Centro Fermi Rome - April 20th, 2012."— Presentation transcript:

1 Status of the EEE telescopes in Catania Paola La Rocca II Conferenza dei Progetti del Centro Fermi Rome - April 20th, 2012

2 II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 3.05 Km The EEE telescopes in Catania 1/4 2 telescopes (CT-01 and CT-02) 3.05 km apart

3 II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 TEL CT-01TEL CT-02 Latitude37° 31,500 N37° 29,325 N Longitude15° 04,046 E15° 03,064 E Altitude210 m a.s.l.110 m a.s.l Distance between chambers 80 cm Orientation w.r.t. NORTH 60 °300° Position inside the building Underground floor (5 concrete roofs above the telescope) Ground floor (light roof above the telescope) The EEE telescopes in Catania 2/4

4 Running from April 2008 Acquisition rate ~ 22 Hz Collected data ~ 2 x10 9 events CT-01 Telescope (Department of Physics) II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 The EEE telescopes in Catania 3/4

5 CT-02 Telescope (Istituto Tecnico S.Cannizzaro) Running from December 2008 Acquisition rate~ 20 Hz Collected data ~ 1 x 10 9 events II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 The EEE telescopes in Catania 4/4

6 - Corso di eccellenza (2008-2009) - Corso di Grid Computing (2010) - Corso di Fisica delle Alte Energie (2011) - PON Project Raggi Cosmici in Classe (2012) Lessons and advanced courses Activities in the schools 1/3 II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

7 - Web Site (eeecatania.tk) - Participation to Local and national Conferences on Science - Local newspapers Web and Media II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 Activities in the schools 2/3

8 Prof. A.Zichichi at ITIS Cannizzaro II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 Activities in the schools 3/3

9 - Barometric effect - Observation of a Forbush decrease Study of the muon flux Some scientific results obtained with the EEE telescopes in Catania - Short-distance correlations (EEE telescope + scintillator) - Detection of EAS with EEE telescopes Study of correlations between telescopes II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

10 The muon flux measured at the sea level changes with the atmospheric pressure Study of the Barometric Effect Counts/h Atm. Press. (mbar) ~ 7 days II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

11 Forbush decrease Valentines day solar flare (Feb. 2011) Moscow Neutron Monitor http://helios.izmiran.troitsk.ru/cosray/main.htm II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

12 The solar flare as observed by the CT-01 telescope Pressure Rate Corrected rate II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 TIME

13 II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 Correlation between the counting rate measured by the Oulu neutron monitor and the CT-01 telescope

14 Neutron Monitors limits: - Sensitive to low energy neutrons - No information about neutrons orientation Use of muon telescopes/hodoscopes for Forbush decreases: - Possibility to study the dependence of the Forbush effect upon the zenithal angle of the muons II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

15 Angular dependence of the amplitude variation II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 Muons arriving with a larger zenithal angle are supposed to be associated to higher-energy primaries

16 Short-distance correlations (<500m) between EEE telescopes and scintillators PT P-1 P-2 P-3 Roof EEE Telescope Small scintillator telescope II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

17 Astroph. Obs.450 m22 d Dept. of Phys. 25 m3 d 36 m1,5 d 82 m11 d INFN LNS146 m10,5 d

18 d = 36 m d = 82 m d = 25 m II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 T T T

19 d = 146 m d = 450 m II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 T T

20 Dechoerence Curve It can be used to evaluate the expected coincidence rate between 2 EEE telescopes II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 Rate not corrected for efficiency and acceptance

21 Detection of EAS with EEE telescopes in Catania 15 x 10 6 events II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

22 More statistics 100 x 10 6 events No Time Correction Relative angle < 25° II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012 Rate 1 coinc/day

23 Outlook - Comparison with results from different EEE sites - Comparison with simulations CERN 15 m LAquila 200 m Cagliari 520 m Frascati 600 m Catania 3050 m II Conferenza dei Progetti del Centro Fermi, Rome - April 20th, 2012

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