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4 results on '"I. M., Brancu"'

1. Test and analysis of hadronic interaction models with KASCADE event rates

Author

W. Hafemann, T. Antoni, J.R. Hörandel, J. Knapp, H. Bozdog, W.D. Apel, D. Martello, G. Schatz, E. Bollmann, H. J. Gils, Markus Roth, J. Milke, H. Ulrich, J. Engler, J. Wochele, J. Kempa, J.H. Weber, D. Heck, S. Zagromski, P. Matussek, A. Vardanyan, J. Oehlschläger, R. Haeusler, Ashot Chilingarian, J. Wentz, K. Bernlöhr, H.J. Mayer, F. Feßler, H.O. Klages, B. Vulpescu, J. Zabierowski, T. Thouw, M. Risse, P. Doll, H. Blümer, T. Wiegert, Hermann-Josef Mathes, R. Glasstetter, H. Rebel, Kai Daumiller, Karl-Heinz Kampert, M. Petcu, K. Bekk, T. Holst, F. Badea, C. Büttner, D. Mühlenberg, A. Haungs, I.M. Brancus, M., Risse, T., Antoni, W. D., Apel, F., Badea, K., Bekk, K., Bernlohr, H., Blumer, E., Bollmann, H., Bozdog, I. M., Brancu, C., Buttner, A., Chilingarian, K., Daumiller, P., Doll, J., Engler, F., Fessler, H. J., Gil, R., Glasstetter, R., Haeusler, W., Hafemann, A., Haung, D., Heck, J. R., Horandel, T., Holst, K. H., Kampert, J., Kempa, H. O., Klage, J., Knapp, Martello, Daniele, H. J., Mathe, P., Matussek, H. J., Mayer, J., Milke, D., Muhlenberg, J., Oehlschlager, M., Petcu, H., Rebel, M., Roth, G., Schatz, T., Thouw, H., Ulrich, A., Vardanyan, B., Vulpescu, J. H., Weber, J., Wentz, T., Wiegert, J., Wochele, J., Zabierowski, and S., Zagromski

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, KASCADE, biology, Hadron, High Energy Physics::Experiment, Venus, Elasticity (economics), biology.organism_classification, Atomic and Molecular Physics, and Optics, Hadron calorimeter
Abstract

Based on the KASCADE multi-detector system with its large hadron calorimeter and using the CORSIKA simulation program with the implemented high-energy hadronic interaction models QGSJET, VENUS, DPMJET, SIBYLL, and HDPM, a method for the test of models by comparing el ent rates is described. Preliminary results show differences of the model predictions both among each other and when confronted with measurements. The rates are strongly influenced by the inelastic cross sections and the elasticity, especially by the contribution of diffractive dissociation. The discrepancy to measurements at primary energies below similar or equal to 3 (.) 10(13) eV can be reduced by increasing the non-diffractive inelastic cross section.

Published
2001

2. Electron, muon, and hadron lateral distributions measured in air showers by the KASCADE experiment

Author

T Antoni, W.D Apel, F Badea, K Bekk, K Bernlöhr, H Blümer, E Bollmann, H Bozdog, I.M Brancus, A Chilingarian, K Daumiller, P Doll, J Engler, F Feßler, H.J Gils, R Glasstetter, R Haeusler, W Hafemann, A Haungs, D Heck, T Holst, J.R Hörandel, K.-H Kampert, J Kempa, H.O Klages, J Knapp, D Martello, H.J Mathes, H.J Mayer, J Milke, D Mühlenberg, J Oehlschläger, M Petcu, H Rebel, M Risse, M Roth, G Schatz, F.K Schmidt, T Thouw, H Ulrich, A Vardanyan, B Vulpescu, J.H Weber, J Wentz, T Wiegert, J Wochele, J Zabierowski, T., Antoni, W. D., Apel, F., Badea, K., Bekk, K., Bernlohr, H., Blumer, E., Bollmann, H., Bozdog, I. M., Brancu, A., Chilingarian, K., Daumiller, P., Doll, J., Engler, F., Fessler, H. J., Gil, R., Glasstetter, R., Haeusler, W., Hafemann, A., Haung, D., Heck, T., Holst, J. R., Horandel, K. H., Kampert, J., Kempa, H. O., Klage, J., Knapp, Martello, Daniele, H. J., Mathe, H. J., Mayer, J., Milke, D., Muhlenberg, J., Oehlschlager, M., Petcu, H., Rebel, M., Risse, M., Roth, G., Schatz, F. K., Schmidt, T., Thouw, H., Ulrich, A., Vardanyan, B., Vulpescu, J. H., Weber, J., Wentz, T., Wiegert, J., Wochele, and J., Zabierowski

Subjects
Physics, Range (particle radiation), Muon, Hadron, Astrophysics (astro-ph), Inner core, FOS: Physical sciences, Astronomy and Astrophysics, Electron, Astrophysics, Nuclear physics, KASCADE, Particle, High Energy Physics::Experiment, Zenith
Abstract

Measurements of electron, muon, and hadron lateral distributions of extensive air showers as recorded by the KASCADE experiment are presented. The data cover the energy range from about 5x10^14 eV up to almost 10^17 eV and extend from the inner core region to distances of 200 m. The electron and muon distributions are corrected for mutual contaminations by taking into account the detector properties in the experiment. All distributions are well described by NKG-functions. The scale radii describing the electron and hadron data best are approx. 30 m and 10 m, respectively. We discuss the correlation between scale radii and `age' parameter as well as their dependence on shower size, zenith angle, and particle energy threshold., Comment: 28 pages, 14 figures, Accepted for publication in Astroparticle Physics

Published
2001

3. Time structure of the extensive air shower muon component measured by the KASCADE experiment

Author

H.J. Gils, D. Mühlenberg, T. Thouw, A. Haungs, E. Bollmann, W. D. Apel, J. Oehlschläger, H. Blümer, R. Haeusler, J. Zabierowski, H. J. Mathes, H. Bozdog, A.F. Badea, J. Wochele, Jörg R. Hörandel, D. Martello, D. Heck, J. Milke, Ashot Chilingarian, J. Wentz, Fabian Schmidt, K. H. Kampert, J. Kempa, Markus Roth, K. Bekk, Konrad Bernlöhr, G. Schatz, J. Engler, H. Rebel, T. Holst, H.J. Mayer, W. Hafemann, J. Knapp, F. Feßler, T. Antoni, H. Ulrich, H.O. Klages, Kai Daumiller, M. Risse, A. Vardanyan, T. Wiegert, P. Doll, M. Petcu, B. Vulpescu, S. Zagromski, R. Glasstetter, J.H. Weber, I.M. Brancus, T., Antoni, W. D., Apel, A. F., Badea, K., Bekk, K., Bernlohr, H., Blumer, E., Bollmann, H., Bozdog, I. M., Brancu, A., Chilingarian, K., Daumiller, P., Doll, J., Engler, F., Fessler, H. J., Gil, R., Glasstetter, R., Haeusler, W., Hafemann, A., Haung, D., Heck, T., Holst, J. R., Horandel, K. H., Kampert, J., Kempa, H. O., Klage, J., Knapp, Martello, Daniele, H. J., Mathe, H. J., Mayer, J., Milke, D., Muhlenberg, J., Oehlschlager, M., Petcu, H., Rebel, M., Risse, M., Roth, G., Schatz, F. K., Schmidt, T., Thouw, H., Ulrich, A., Vardanyan, B., Vulpescu, J. H., Weber, J., Wentz, T., Wiegert, J., Wochele, J., Zabierowski, and S., Zagromski

Subjects
Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Monte Carlo method, Astronomy and Astrophysics, Cosmic ray, Nuclear physics, Air shower, KASCADE, Quartile, Angle of incidence (optics), High Energy Physics::Experiment
Abstract

The temporal structure of the extensive air shower (EAS) muon component (E-thres = 2.4 GeV) is studied at sea level by measurements of the muon arrival time distributions using the muon detection facilities of the KASCADE central detector. Data have been analysed for EAS core distances up to 110 m for primary energies around the knee region. The time structure of the EAS muon component is represented by the distributions of the mean, median, first quartile and the third quartile of the muon arrival time distributions relative to the foremost muon. The EAS time profiles (variation with the distance from the EAS center) are studied along their dependencies on the angle of incidence and the energy-indicative muon number N-mu(tr). Effects of the fluctuation of the arrival time of the first registered muon are scrutinised and corrected. The experimental results are compared with EAS Monte Carlo (CORSIKA-GEANT) simulations, fully including the detector responses and illustrating the phenomenological features. The comparisons, though generally in fair global agreement, revealed that the simulations underestimate the shower thickness and show nearly no dependence on the mass composition if the time resolution of the apparatus is realistically taken into account. (C) 2001 Elsevier Science B.V. All rights reserved.

Published
2001

4. First results of the air shower experiment KASCADE

Author

A. Haungs, T. Antoni, W.D. Apel, F. Badea, K. Bekk, K. Bernlöhr, H. Blümer, E. Bollmann, H. Bozdog, I.M. Brancus, C. Büttner, A. Chilingarian, K. Daumiller, P. Doll, J. Engler, F. Feßler, H.J. Gils, R. Glasstetter, R. Haeusler, W. Hafemann, D. Heck, J.R. Hörandel, T. Holst, K.-H. Kampert, H. Keim, J. Kempa, H.O. Klages, J. Knapp, D. Martello, H.J. Mathes, P. Matussek, H.J. Mayer, J. Milke, D. Mühlenberg, J. Oehlschläger, M. Petcu, H. Rebel, M. Risse, M. Roth, G. Schatz, F.K. Schmidt, T. Thouw, H. Ulrich, A. Vardanyan, B. Vulpescu, J.H. Weber, J. Wentz, T. Wiegert, J. Wochelea, J. Zabierowski, S. Zagromski, A., Haung, T., Antoni, W. D., Apel, F., Badea, K., Bekk, K., Bernlohr, H., Blumer, E., Bollmann, H., Bozdog, I. M., Brancu, C., Buttner, A., Chilingarian, K., Daumiller, P., Doll, J., Engler, F., Fessler, H. J., Gil, R., Glasstetter, R., Haeusler, W., Hafemann, D., Heck, J. R., Horandel, T., Holst, K. H., Kampert, H., Keim, J., Kempa, H. O., Klage, J., Knapp, Martello, Daniele, H. J., Mathe, P., Matussek, H. J., Mayer, J., Milke, D., Muhlenberg, J., Oehlschlager, M., Petcu, H., Rebel, M., Risse, M., Roth, G., Schatz, F. K., Schmidt, T., Thouw, H., Ulrich, A., Vardanyan, B., Vulpescu, J. H., Weber, J., Wentz, T., Wiegert, J., Wochele, J., Zabierowski, and S., Zagromski

Subjects
Physics, Nuclear and High Energy Physics, Elemental composition, Range (particle radiation), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), Detector, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Cosmic ray, Astrophysics, Atomic and Molecular Physics, and Optics, Nuclear physics, Shower, Air shower, KASCADE, Energy spectrum
Abstract

The main goals of the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment are the determination of the energy spectrum and elemental composition of the charged cosmic rays in the energy range around the knee at ca. 5 PeV. Due to the large number of measured observables per single shower a variety of different approaches are applied to the data, preferably on an event-by-event basis. First results are presented and the influence of the high-energy interaction models underlying the analyses is discussed., 3 pages, 3 figures included, to appear in the TAUP 99 Proceedings, Nucl. Phys. B (Proc. Suppl.), ed. by M. Froissart, J. Dumarchez and D. Vignaud

Published
2000

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