KASCADE extensive air shower experiment
نویسندگان
چکیده
The main aim of the KASCADE extensive air shower (EAS) experiment is the determination of the chemical composition of cosmic rays in the energy range around and above the knee at Ek ≈ 3 PeV. A large number of observables is measured simultaneously for each individual event, by the combination of various detection techniques for the electromagnetic, the muonic, and the hadronic component of the extensive air showers. Detailed investigations have been performed with the data measured by the KASCADE experiment since the start of data taking at the end of 1995. The results allow to evaluate hadronic interaction models, used in simulations to interpret air shower data. The all–particle spectrum of cosmic rays and their mass composition, as well as individual spectra for groups of elements have been reconstructed in the energy range between 10 and 10 eV. The results suggest, the knee in the all–particle cosmic–ray energy spectrum is caused by a rigidity–dependent cut–off of individual element groups. To improve the statistics around 10 eV, where the ”iron knee” in the cosmic ray spectrum is indicated in our data, the KASCADE experiment has recently been extended to KASCADE-Grande by a large collecting area (0.5 km) electromagnetic array, contributed from the former EAS-TOP experiment. The Grande part will cover the primary energy range 10 eV < E0 < 10 18 eV, overlapping with KASCADE around 10 eV, thus providing a continuous information from 3 · 10 eV to 10 eV. In addition, new technologies in detecting radio emission from cosmic ray air showers will be tested by an array of antennas (LOPES project) at the site of KASCADE.
منابع مشابه
30TH INTERNATIONAL COSMIC RAY CONFERENCE Muon Production Height in the Air-Shower Experiment KASCADE-Grande
A large area (128m) Muon Tracking Detector (MTD), located within the KASCADE experiment, has been built with the aim to identify muons (Eμ >0.8GeV) and their directions in extensive air showers by track measurements under more than 18 r.l. shielding. The orientation of the muon track with respect to the shower axis is expressed in terms of the radialand tangential angles. By means of triangulat...
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KASCADE-Grande is a ground based multi-detector experiment measuring extensive air showers in order to study the primary cosmic ray energy spectrum in the energy range from 10 eV to 10 eV. A Flash-ADC based data acquisition system in KASCADE-Grande allows to study the temporal structure of extensive air showers. Muons in extensive air showers are thought to arrive on average earlier than the pa...
متن کامل30TH INTERNATIONAL COSMIC RAY CONFERENCE The KASCADE-Grande Experiment
KASCADE-Grande is an extensive air shower experiment at Forschungszentrum Karlsruhe, Germany. Main parts of the experiment are the Grande array spread over an area of 700 × 700m , the original KASCADE array covering 200 × 200m with unshielded and shielded detectors, and additional muon tracking devices. This multi-detector system allows to investigate the energy spectrum, composition, and aniso...
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The capability of the Muon Tracking Detector to measure the radial and tangential angles of muons in extensive air showers, in combination with the shower direction as determined by the scintillator array of KASCADE experiment, has been investigated. Due to different characteristics in shower development of light and heavy primary particles the radial angle is sensitive to the mass of them. For...
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Data taken during half a year of operation of 10 LOPES antennas (LOPES-10), triggered by EAS observed with KASCADE-Grande have been analysed. We report about the analysis of correlations of radio signals measured by LOPES-10 with extensive air shower events reconstructed by KASCADE-Grande, including shower cores at large distances. The efficiency of detecting radio signals induced by air shower...
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