TY - GEN
T1 - A systematic study of the hybrid experiment at Mt.Chacaltaya
AU - Tamada, M.
AU - Aoki, H.
AU - Honda, K.
AU - Inoue, N.
AU - Kawasumi, N.
AU - Martinic, N.
AU - Ochi, N.
AU - Ohmori, N.
AU - Ohsawa, A.
AU - Semba, H.
AU - Ticona, R.
PY - 2013
Y1 - 2013
N2 - In the hybrid experiment on Mt.Chacaltaya, we can observe three different components of airshowers, that is, air-shower size, burst-density and high energy families (a bundle of high energy particles). Burst-density in each block of hadron calorimeters are newly recalculated in simulations in oder to compare directly to the experimental data. Energy deposits in the scintillators of the hadron calorimeters are calculated using GEANT4 for every particle, incident upon the hadron calorimeter, in the air-showers simulated using CORSIKA, and are converted into burst-density, taking into consideration the exact structure of experimental hadron calorimeter. We study correlations among three observable components in the air-showers. Correlations between air-shower size and burst-density and those between air-shower size and accompanied family energy can be explained by model calculations by adjusting primary particle composition, the former correlation is in favor of proton-primaries but the latter iron-primaries. No model can describe well observed correlations between burst-density and family energy. That is, the observed family energy accompanied by the air-showers with larger burst-density is systematically smaller than that expected in the simulated events. Effects of a fluctuation in the cross-section of hadronic interactions are studied to settle the disagreement between experimental data and simulations.
AB - In the hybrid experiment on Mt.Chacaltaya, we can observe three different components of airshowers, that is, air-shower size, burst-density and high energy families (a bundle of high energy particles). Burst-density in each block of hadron calorimeters are newly recalculated in simulations in oder to compare directly to the experimental data. Energy deposits in the scintillators of the hadron calorimeters are calculated using GEANT4 for every particle, incident upon the hadron calorimeter, in the air-showers simulated using CORSIKA, and are converted into burst-density, taking into consideration the exact structure of experimental hadron calorimeter. We study correlations among three observable components in the air-showers. Correlations between air-shower size and burst-density and those between air-shower size and accompanied family energy can be explained by model calculations by adjusting primary particle composition, the former correlation is in favor of proton-primaries but the latter iron-primaries. No model can describe well observed correlations between burst-density and family energy. That is, the observed family energy accompanied by the air-showers with larger burst-density is systematically smaller than that expected in the simulated events. Effects of a fluctuation in the cross-section of hadronic interactions are studied to settle the disagreement between experimental data and simulations.
UR - http://www.scopus.com/inward/record.url?scp=84879650776&partnerID=8YFLogxK
U2 - 10.1051/epjconf/20125207006
DO - 10.1051/epjconf/20125207006
M3 - Contribución a la conferencia
AN - SCOPUS:84879650776
SN - 9782759810239
T3 - EPJ Web of Conferences
BT - ISVHECRI 2012 - 17th International Symposium on Very High Energy Cosmic Ray Interactions
T2 - 17th International Symposium on Very High Energy Cosmic Ray Interactions, ISVHECRI 2012
Y2 - 10 August 2012 through 15 August 2012
ER -