Description and characterization of a stereoscopic trigger system between the CTAO LST-1 and the MAGIC telescopes
Year: 2026
Type: article
Abstract: We present the implementation and validation of a hardware stereoscopic trigger (HaST) linking the Large-Sized Telescope prototype (LST-1) of the Cherenkov Telescope Array Observatory (CTAO) with the MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov Telescope) telescopes at the Roque de los Muchachos Observatory. This setup enables real-time exchange of camera-level trigger signals, allowing joint data acquisition and providing a commissioning platform for the future 4-LST HaST system. The performance of the system was studied through trigger rate scans, coincidence window optimization, and timing distribution analyses. The results demonstrate the technical viability of the LST-1 HaST and confirm its role as both a proof of concept and a realistic test bench for the trigger architecture to be deployed in future CTAO operations.
Institutions: Universidad Complutense de Madrid, Institute for Cosmic Ray Research, The University of Tokyo, National Institute for Astrophysics, University of Siena, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, Centre National de la Recherche Scientifique, Université Paris Cité, Laboratoire AstroParticule et Cosmologie, Institut National de Physique Nucléaire et de Physique des Particules
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,620
OpenAlex ID: W7154014900