The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for gamma-ray astronomy at very-high energies. With more than 100 telescopes located in the northern and southern hemispheres, CTA will be the world’s largest and most sensitive high-energy gamma-ray observatory.While the northern hemisphere array will be more limited in size and will focus on CTA’s low- and mid-energy ranges from 20 GeV to 20 TeV, the southern hemisphere array will span the entire energy range of CTA, covering gamma-ray energies from 20 GeV to 300 TeV. The Northern site is located at the Roque de los Muchachos Observatory (ORM) in the Canary island of La Palma and will be dedicated basically to the extragalactic science. The Southern site, placed at the European Southern Observatory (ESO) near Paranal, Chile, will also make observations in the galactic plane. Three classes of telescope will be distributed in the northern and southern hemisphere based on their sensitivity: the Small-Sized Telescope (SST), Medium-Sized Telescope (MST), and Large-Sized Telescope (LST). Because the SSTs are tuned to be the most sensitive to detect high-energy gamma rays, they are more ideal for the southern site’s detection of higher-energy gamma rays, while the MSTs and LSTs will be installed on both sites.
The IEEC participates actively in CTA through the Institute of Cosmos Sciences (UB), the Institute of Space Sciences (ICE, CSIC) and the Center of Space Studies and Research, CERES (UAB). They have been involved in CTA since the very beginning, both in the definition of the scientific objectives and in the development and construction of CTA. The Institute of Cosmos Sciences group has a leading role in the design and construction of the camera electronics for the prototype of the first Large-Sized Telescope (LST1) and has contributed to definition of the Transients Key Science Program of CTA. The Institute of Space Sciences group contributes with the development of the control layer software for the cameras and telescopes of the large-size telescopes, and it is deeply involved in the development of the Scheduler software for the long-term to the short-term observatory planning. Finally, the Center of Space Studies and Research, CERES group coordinates the Central Calibration Facilities project of CTA, is responsible for the atmospheric monitoring, and contributes to the development of the Raman LIDAR optmized for CTA.