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EAS EXPERIMENT ON BOARD OF THE AIRBUS A380

EAS EXPERIMENT ON BOARD OF THE AIRBUS A380. J. N. Capdevielle, F. Cohen, PCC, College de France. K. Jedrzejczak, B. Szabelska, J. Szabelski , T. Wibig The Andrzej Soltan Institute for Nuclear Studies, Cosmic Ray Laboratory, Lodz, Poland js@zpk.u.lodz.pl. EAS EXPERIMENT ON BOARD

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EAS EXPERIMENT ON BOARD OF THE AIRBUS A380

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  1. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 J. N. Capdevielle, F. Cohen,PCC, College de France K. Jedrzejczak, B. Szabelska, J. Szabelski, T. Wibig The Andrzej Soltan Institute for Nuclear Studies, Cosmic Ray Laboratory, Lodz, Poland js@zpk.u.lodz.pl

  2. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 J. N. Capdevielle, F. Cohen,PCC, College de France K. Jedrzejczak, B. Szabelska, J. Szabelski, T. Wibig The Andrzej Soltan Institute for Nuclear Studies, Cosmic Ray Laboratory, Lodz, Poland js@zpk.u.lodz.pl

  3. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 The idea is to use test flights of the airbus A380 to load its internal space by the Cosmic Ray detectors. Altitude: 10 km, 250 g/cm2 Exposure: 5000 - 10,000 hours Size: 70m x 6m (double decker) Max. Weight: ~80 tons

  4. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 We want to register: • EAS • single energetic hadrons (protons) at the altitude of 10 km. EAS: iron group energy spectrum can be determined up to about 107 GeV single proton: energy spectrum up to about 106 GeV can be determined.

  5. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 The detectors would register: • soft component (counts) • muons (counts) • Hadrons (energy weighted counts) Detectors would be distributed over the upper passenger area 6 - 7 m 60 - 65 m

  6. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 EAS simulations: electron densities @ 10 km CORSIKA v 6.018 simulations

  7. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 EAS simulations: Average gamma and electron densities @ 10 km Differences proton/iron are similar for gammas and electrons CORSIKA v 6.018 simulations

  8. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 EAS simulations: Average EAS hadron densities @ 10 km Distibutions for proton and iron are "parallel" CORSIKA v 6.018 simulations

  9. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Iron EAS selection method Figure presents for 106, 107and 108GeV separately for each EAS: ratio of average electron density near to the core (1-5 m) to density at 20-30 m from the core vs. Average density at 20-30 m Iron EAS are regularly developed proton EAS undergo large fluctuations Iron are in blue Protons are in red

  10. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Iron EAS selection method Figure presents for 106, 107and 108GeV separately for each EAS: ratio of average electron density near to the core (1-5 m) to density at 20-30 m from the core vs. Average density at 20-30 m Iron EAS are regularly developed proton EAS undergo large fluctuations Iron are in blue Protons are in red

  11. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Detector unit Weights: scintillators 2 x 5 kg carbon 226 kg lead 283 kg polyethylene 83 kg TOTAL: about 700 kg / unit Hadron interactions: above lead - probability ~0.7 in lead - probability ~0.5

  12. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Hadron detection Hadron and hadron energy would be register thanks to its • interaction inside a detector • secondary hadron multiplicity produced in that interaction Secondary hadron interacting with (destroing) lead nucleus produces neutrons of MeV energy range (on average about 40 neutrons per interaction). Neutron detector (counters) can have efficiency of about 3% (i.e. Moderator and a few 3He counters). Example (average numbers): 100 GeV vertical proton, interaction in carbon block probability 0.7, average hadron multiplcity 10, average number of neutrons 300, average number of 3He counters counts 12.

  13. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Hadron detection EAS hadrons interact in carbon and produce large number of hadrons in the detector Hadrons produced in detector by EAS hadrons Hadron multiplicity A=2.7, B=-0.03, C=0.167 D=-7, F=7.2, G=0.127 C.J.Almer et al. UA5 Collab.,Phys. Letters B, 167 (1986), 476 CORSIKA v 6.018 simulations

  14. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Cosmic Ray spectra and limits (example) CR spectra following: Jorg R. Horandel On the Knee in the Energy Spectrum of Cosmic Ray', astro-ph/0210453 20 Oct. 2002, assuming the knee at 2 x 106GeV/particles.

  15. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Cosmic Ray spectra and limits (example) (in numbers for 5000h) the knee depends on: Energy 760 84 7.8 0.7 0.06 Mass 910 150 24 3.6 0.5 Mass 1700 240 30 3.1 0.3 Energy 1700 240 30 3.1 0.3 Rigidity 910 150 23 3.1 0.3 Rigidity 1700 240 30 3.1 0.3 Energy (GeV) 105 3.2x105 106 3.2x106 107 3.2x107 108 Expeted EAS number of CR iron origin Expeted surviving proton number

  16. EAS EXPERIMENT ON BOARD OF THE AIRBUS A380 Conclusions Set of compact detectors distributed throughout passenger cabin of the Airbus A380 during its test flights would provide opportunity of Cosmic Ray registration with energies around the knee : proton component (as registration of particles surviving without interaction + veto from the array) up to the knee region heavy component energy spectra up to several times the knee energy with the discrimination between different models of mass compositions above the knee.

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