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Performance studies of the CTA observatory


Bernlöhr,  Konrad
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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Di Pierro, F., Bernlöhr, K., Farnier, C., Hinton, J., Lenain, J.-P., Prokoph, H., et al. (2011). Performance studies of the CTA observatory. In Proceedings of the 32nd International Cosmic Ray Conference (pp. 54-58). doi:10.7529/ICRC2011/V09/0684.

The Cherenkov Telescope Array (CTA), currently in the Preparatory Phase, will study gamma rays in the energy range from a few tens of GeV to > 100 TeV with unprecedented sensitivity and angular resolution. In order to cover such a vast energy range, an array of three complementary telescope types is envisaged: a small number of Large Size Telescopes (LST, 23m-diameter dish) for the low-energy range (below 200 GeV), few tens of Medium Size Telescopes (MST, 12m dish) for the central energy range (100 GeV - 10 TeV) and a large number of Small Size Telescopes (SST, 4-7m dish) for the high energy range (above 10 TeV). The optimization of the performance (sensitivity, angular and energy resolutions) of such a complex system requires intensive simulation activities. Some preliminary results in terms of off-axis performance, operation under moonlight conditions and high altitude performance are reported and discussed