Mirror Development for the Cherenkov Telescope Array

FÖRSTER, A.; AMSTRONG, T.; BABA, H.; BÄHR, J.; BONARDI, A.; BONNOLI, G.; BRUN, P.; CANESTARI, R.; CHADWICK, P.; CHICAWA, M.; CARTON, P.-H.; DE SOUZA, V.; DIPOLD, J.; DORO, M. ; DURAND, D.; DYRDA, M.; GIRO, E.; GLICENSTEIN, J.-F.; HANABATA, Y.; HAYASHIDA, M.; HRABOVSKI, M.; JEANNEY, J. ; KAGAYA, M.; KATAGIRI, H.; LESSIO, L. ; MANDAT, D. ; MARIOTTI, M; MEDINA, M. C.; MICHAłOWSKI, J.; MICOLON, P. ; NAKAJIMA , D.; NIEMIEC, J. ; NOZATO, A. ; PALATKA, M.; PARESCHI, G.; PECH, M. ; PEYAUD, B.; PÜHLHOFER, G.; RATAJ, M. ; RODEGHIERO, G. ; ROJAS, G.; ROUSSELLE, J. ; ET AL.

Conferencia; 33rd International Cosmic Ray Conference (ICRC2013); 2013

The Cherenkov Telescope Array (CTA) is a planned observatory for very-high energy gamma-ray astronomy. It will consist of several tens of telescopes of different sizes, with a total mirror area of up to 10,000 square meters. Most mirrors of current installations are either polished glass mirrors or diamond-turned aluminium mirrors, both labour intensive technologies. For CTA, several new technologies for a fast and cost-efficient production of light-weight and reliable mirror substrates have been developed and industrial pre-production has started for most of them. In addition, new or improved aluminium-based and dielectric surface coatings have been developed to increase the reflectance over the lifetime of the mirrors compared to those of current Cherenkov telescope instruments.