1,721,350 research outputs found
The DAMPE experiment: first data from space
Full text linkThe DAMPE satellite has been successfully launched in orbit on December 2015. The science goals of the mission include the study of high energy cosmic ray electrons, photons, protons and nuclei in a wide energy range: 109 − 1014 eV. A report on the mission status will be presented, together with on-orbit detector performance and first data coming from space
Search for magnetic monopoles in the cosmic radiation with the MACRO detector at Gran Sasso
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Measurement of the proton-air cross section with ARGO-YBJ
No full textIn this work the results of p-air cross section measurements with the ARGO-YBJ experiment are reported.
The analysis is based on the different flux attenuation for different atmospheric depths (i.e. zenith angles), by
exploiting the detector capabilities in selecting the shower development stage by means of the size, hit density and
lateral profile measurements. The systematic errors introduced by fluctuations in shower development and heavier
primaries have been taken into account. The results can give useful insights on p-air interactions at energies where
hadronic interaction models start to give significantly different expectations and allow to infer the p-p total cross
section in the energy region (√s = 80GeV − 500 GeV ) not covered by experiments at accelerators
Proton-air inelastic cross section measurement with ARGO-YBJ
No full textFirst results of the measurement of the interaction cross section between primary protons and
air nuclei with the ARGO-YBJ experiment are reported. The analysis is based on the flux attenuation
for different atmospheric depths (i.e. zenith angles) and can exploit the detector capabilities of selecting
the shower development stage by means of the size, hit density and both time and lateral profile measurements.
The effects of shower fluctuations and the contribution of heavier primaries have been also
considered
Cosmic Ray Physics with the ARGO-YBJ experiment
No full textCosmic rayphysics in the 10^12–10^15 eV primary energy range is among themain scientific goals of the ARGO-YBJ experiment.
The detector, located at the Cosmic Ray Observatory of Yangbajing (Tibet, P.R.China) at 4300 m a.s.l., is a full coverage Extensive Air Shower array consisting of a carpet of Resistive
Plate Chambers of about 6000m^2.
The apparatus layout, performance and location offer a unique
possibility to make a deep study of several characteristics of the hadronic component of the cosmic ray flux in an energy window marked by the transition from direct to indirect measurements. In this work we will focus on the experimental results concerning the measurements of the primary cosmic ray energy spectrum and of the proton-air cross-section. The all-particle spectrum has been measured, by using a bayesian unfolding technique, in the 1–100TeV energy region. The proton-air cross-section has been measured at the same energies, by exploiting the cosmic ray flux attenuation for different atmospheric depths (i.e. zenith angles). The total proton–proton cross-section has then been estimated
at center of mass energies between 70 and 500GeV, where no accelerator data are currently available
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