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  • Ev G Navarra, T Antoni, W D Apel, F Badea, K Bekk, A Bercuci +49 others
  • 2004
We describe the main features of the extensive air-shower array devoted to the study of cosmic-ray primaries and their interactions at primary energies 10 PeV–1 EeV which is starting operation at Forschungszentrum Karlsruhe. It exploits the existing KASCADE multi-detector facilities, and two new detectors: Grande and Piccolo, with the respective aims of(More)
Radio pulses emitted in the atmosphere during the air shower development of high-energy primary cosmic rays were measured during the late 1960ies in the frequency range from 2 MHz to 520 MHz. Mainly due to difficulties with radio interference these measurements ceased in the late 1970ies. LOFAR (Low Frequency Array) is a new digital radio interferometer(More)
The nature of ultrahigh-energy cosmic rays (UHECRs) at energies >10(20) eV remains a mystery. They are likely to be of extragalactic origin, but should be absorbed within approximately 50 Mpc through interactions with the cosmic microwave background. As there are no sufficiently powerful accelerators within this distance from the Galaxy, explanations for(More)
a on leave of absence from (4) Abstract A scintillator array (Grande) of large collecting area (700m x 700m) has been set up at Forschungszentrum Karlsruhe in Germany to operate jointly with the existing KASCADE multi-detector experiment. The enlarged EAS experiment provides comprehensive observations of cosmic rays in the primary energy range of 0.1 PeV to(More)
In the last few years, radio detection of cosmic ray air showers has experienced a true renaissance, becoming manifest in a number of new experiments and simulation efforts. In particular, the LOPES project has successfully implemented modern interferometric methods to measure the radio emission from extensive air showers. LOPES has confirmed that the(More)
  • W Walkowiak, T Antoni, W D Apel, F Badea, K Bekk, A Bercuci +54 others
  • 2005
We present the design and first test results of a new FADC-based data acquisition (DAQ) system for the Grande array of the KASCADE-Grande experiment. The original KASCADE experiment at the Forschungszentrum Karlsruhe, Germany, has been extended by 37 detector stations of the former EAS-TOP experiment (Grande array) to provide sensitivity to energies of(More)
Aims. The capability of radio antenna arrays to measure cosmic ray air showers with very large zenith angles is explored. This is important, since a possible neutrino detection has to fulfill two requirements. First: antennas should be able to detect very inclined cosmic ray air showers, and second: it should be possible to estimate the distance to the(More)
The glass Resistive Plate Chambers efficiency before and after water vapour flushing have been studied. The efficiency has been observed to rapidly drop to the level of 30% after a few days. After few hours of ammonia flushing, a full recover of the device occurred. Surprisingly, further flushing with water vapour had no effect on the efficiency, suggesting(More)
The KASCADE-Grande experiment consists of a large scintillator array for the detection of charged particles from extensive air showers in the primary energy range ! # " % $ & ') (eV. In combination with the KASCADE muon detectors it provides the means to investigate the possible existence of an iron knee and the change in composition due to extragalactic(More)
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(More)