Cross calibration of telescope optical throughput efficiencies using reconstructed shower energies for the Cherenkov Telescope Array
Mitchell AMW, Parsons RD, Hofmann W, Bernloehr K (2016)
Publication Type: Journal article
Publication year: 2016
Journal
Book Volume: 75
Pages Range: 1-7
DOI: 10.1016/j.astropartphys.2015.10.008
Abstract
For reliable event reconstruction of Imaging Atmospheric Cherenkov Telescopes (IACTs), calibration of the optical throughput efficiency is required. Within current facilities, this is achieved through the use of ring shaped images generated by muons. Here, a complementary approach is explored, achieving cross calibration of elements of IACT arrays through pairwise comparisons between telescopes, focussing on its applicability to the upcoming Cherenkov Telescope Array (CTA). Intercalibration of telescopes of a particular type using eventwise comparisons of shower image amplitudes has previously been demonstrated to recover the relative telescope optical responses. A method utilising the reconstructed energy as an alternative to image amplitude is presented, enabling cross calibration between telescopes of varying types within an IACT array. Monte Carlo studies for two plausible CTA layouts have shown that this calibration procedure recovers the relative telescope response efficiencies at the few per cent level.
Authors with CRIS profile
Involved external institutions
Germany (DE)How to cite
APA:
Mitchell, A.M.W., Parsons, R.D., Hofmann, W., & Bernloehr, K. (2016). Cross calibration of telescope optical throughput efficiencies using reconstructed shower energies for the Cherenkov Telescope Array. Astroparticle Physics, 75, 1-7. https://doi.org/10.1016/j.astropartphys.2015.10.008
MLA:
Mitchell, Alison M. W., et al. "Cross calibration of telescope optical throughput efficiencies using reconstructed shower energies for the Cherenkov Telescope Array." Astroparticle Physics 75 (2016): 1-7.
BibTeX: Download