Monday, July 15, 2013

1307.3409 (Anna Barnacka et al.)

Performance of the Cherenkov Telescope Array at energies above 10 TeV    [PDF]

Anna Barnacka, Leszek Bogacz, Mira Grudzińska, Adam Frankowski, Mateusz Janiak, Piotr Lubiński, Rafał Moderski, for the CTA Consortium
The Cherenkov Telescope Array (CTA) is the next generation observatory for very high energy gamma rays. The capability of the array to detect gamma-rays above 10 TeV is going to be achieved with a large number of Small Size Telescopes (SSTs) which will cover a large area. The subarray composed of SSTs has to compromise the number of telescopes (cost) and the large effective area. The separation between the telescopes has to be adjusted to achieve highest sensitivity with the smallest number of telescopes. On the other hand larger separation can worsen the energy threshold as well as the energy and angular resolutions. In our study we have investigated the optimal spacing between the telescopes of the SST array using an analytical approach and the concept of telescope cell consisting of four telescopes as well as Monte Carlo simulations of the sets of cells.
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