Prof. Andrea Lavagno (Politecnico di Torino)
Recent progress in growth of single crystal Chemical Vapour Deposition (CVD) diamonds of very high purity and high homogeneity has opened new perspectives to UV photosensors dedicated to work optically coupled to next generation two-phase liquid-Ar (LAr) and/or liquid-Xe (LXe) detectors for future neutrino and dark matter experiments. These physical investigations require detectors that...
Ms Maike Helena Kunnas (University of Hamburg)
As a non-imaging wide-angle Cherenkov air shower detector array with an area of up to 100 km2, HiSCORE (Hundred Square km Cosmic ORigin Explorer) is built to measure gamma rays and cosmic rays in an energy range of 10 TeV up to 1EeV. Three stations consisting of light collector Winston cones equipped with photomultiplier tubes have already been deployed to Tunka Valley, Russia. The first...
Federico Urban (ULB)
We study the influence of the random part of the Galactic magnetic field on the propagation of ultra high-energy cosmic rays. We can derive an approximated but clear and direct relation to cosmic ray deflections, bypassing the detailed knowledge of the magnetic properties of the turbulent plasma. Thanks to the observational data on rotational measures, we then build a direction-dependent map...
59. Measurement of Hydrogen and helium isotopes flux in galactic cosmic rays with the PAMELA experiment
Valerio Formato (TS)
PAMELA is a satellite borne experiment designed to study with great accuracy cosmic rays of galactic, solar, and trapped nature, with particular focus on the antimatter component. The detector consists of a permanent magnet spectrometer core to provide rigidity and charge sign information, a Time-of-Flight system for velocity and charge information, a Silicon-Tungsten calorimeter and a...
Ignacio Taboada (Georgia Institute of Technology)
Gamma Ray Bursts (GRBs) are among the most powerful events in the Universe. They have been observed from radio to GeV energies. In the past few years Fermi LAT has shown that GRBs are able to produce photons up to 30 GeV (approx. 90 GeV corrected for redshift for GRB 090902B). It is unknown up to what energy the spectrum extends. Studying the spectrum beyond 10 GeV, is of interest in...
Prof. Fazale Aleem (The University of Lahore, Pakistan)
Total cross section measurements at cosmic ray energies can reveal information about the shape of hadronic matter. Recent measurements at cosmic ray energies and at TOTEM/LHC confirm the growth of the total cross section. Based on theoretical investigations it is found that Geometrical picture helps us in having a glimpse of hadronic radii indicating the growth of hadrons at ultrahigh energies.
Dr Mohamed Chérif TALAI (Badji Mokhtar University of Annaba, Physics Rays Laboratory, BP 12, Annaba 23000 ALGERIA)
Detailed simulations of EAS have been carried out with CORSIKA program in order to evaluate the energy brought by different shower components at ground level and transmitted underground. A special attention is given to the angular distributions and to the collimation of beams penetrating deep underground or underwater. The natural collimation of high energy particles in EAS cores results...
Mr Rafik Sedrati (Physics Department, Badji Mokhtar University, B. P. 12, Annaba 23000, Algeria)
In the last few years, very important data on high-energy cosmic-ray electrons and positrons from high-precision space-borne and ground-based experiments have attracted a great deal of interest.These particles represent a unique probe for studying local comic-ray accelerators because they lose energy very efficiently and rapidly by two dominant processes: inverse Compton scattering and...
Prof. Daniele Fargion (ROMA1)
GRBs have been found within a wide range of power and photon energy spectra. Their understanding was usually seen as the largest explosion, fireball, billion times a SN one. Fireball, by definition were isotropic. Last decades have been an evolution of fire-ball hitting shells in some fountain of tens degree size. I advocated since 1998 a much thinner jet whose solid angle is a part of a...