The KASCADE-Grande observatory and the composition of very high-energy cosmic rays

14th Mexican Workshop on Particles and Fields

Arteaga-Velázquez, J.C.^1 ; Apel, W.D.^2 ; Bekk, K.^2 ; Bertaina, M.^3 ; Blümer, J.^2,4 ; Bozdog, H.^2 ; Brancus, I.M.^5 ; Cantoni, E.^3,6,13 ; Chiavassa, A.^3 ; Cossavella, F.^4,14 ; Daumiller, K.^2 ; De Souza, V.^7 ; Di Pierro, F.^3 ; Doll, P.^3 ; Engel, R.^2 ; Engler, J.^2 ; Fuchs, B.^4 ; Fuhrmann, D.^8,15 ; Gils, H.J.^2 ; Glasstetter, R.^8 ; Grupen, C.^9 ; Haungs, A.^2 ; Heck, D.^2 ; Hörandel, J.R.^10 ; Huber, D.^4 ; Huege, T.^2 ; Kampert, K.-H.^8 ; Kang, D.^4 ; Klages, H.O.^2 ; Link, K.^4 ; Luczak, P.^11 ; Ludwig, M.^4 ; Mathes, H.J.^2 ; Mayer, H.J.^2 ; Melissas, M.^4 ; Milke, J.^2 ; Mitrica, B.^5 ; Morello, C.^6 ; Oehlschläger, J.^2 ; Ostapchenko, S.^2,16 ; Palmieri, N.^4 ; Petcu, M.^5 ; Pierog, T.^2 ; Rebel, H.^2 ; Roth, M.^2 ; Schieler, H.^2 ; Schröder, F.G.^2 ; Sima, O.^12 ; Toma, G.^5 ; Trinchero, G.C.^6 ; Ulrich, H.^2 ; Weindl, A.^2 ; Wochele, J.^2 ; Zabierowski, J.^11

Universidad Michoacana, Instituto de Física y Matemáticas, Morelia, Mexico^1

Institut für Kernphysik, KIT - Karlsruher Institut für Technologie, Germany^2

Dipartimento di Fisica, Università degli Studi di Torino, Torino, Italy^3

Institut für Experimentelle Kernphysik, KIT - Karlsruher Institut für Technologie, Germany^4

Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest, Romania^5

Osservatorio Astrofisico di Torino, INAF Torino, Torino, Italy^6

Universidade São Paulo, Instituto de Física de São Carlos, São Carlos, Brazil^7

Fachbereich Physik, Universität Wuppertal, Germany^8

Department of Physics, Siegen University, Germany

(10) Deptartment of Astrophysics, Radboud University Nijmegen, Netherlands

(11) National Centre for Nuclear Research, Department of Cosmic Ray Physics, Lódz, Poland

(12) Department of Physics, University of Bucharest, Bucharest, Romania

(13) Istituto Nazionale di Ricerca Metrologia, INRIM, Torino, Italy

(14) DLR Oberpfaffenhofen, Germany

(15) University of Duisburg-Essen, Duisburg, Germany

(16) University of Trondheim, Norway^9

关键词: Accurate measurement;    Air showers;    Energy spectra;    Extragalactic origin;    KASCADE-Grande;    Simultaneous measurement;    Sufficient statistics;    Very high energies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/651/1/012001/pdf
DOI  :  10.1088/1742-6596/651/1/012001

来源: IOP

【 摘 要 】

KASCADE-Grande is an air-shower observatory devoted to the detection of cosmic rays with energies in the range of 1016to 1018eV. This energy region is of particular interest for the cosmic ray astrophysics, since it is the place where some models predict the existence of a transition from galactic to extragalactic origin of cosmic rays and the presence of a break in the flux of its heavy component. The detection of these features requires detailed and simultaneous measurements of the energy and composition of cosmic rays with sufficient statistics. These kinds of studies are possible for the first time in KASCADE-Grande due to the accurate measurements of several air-shower observables, i.e., the number of charged particles, electrons and muons in the shower, using the different detector systems of the observatory. In this contribution, a detailed look into the composition of 1016- 1018eV cosmic rays with KASCADE-Grande is presented.