| Issue |
EPJ Web Conf.
Volume 319, 2025
RICAP-24, 9th Roma International Conference on Astroparticle Physics
|
|
|---|---|---|
| Article Number | 12003 | |
| Number of page(s) | 4 | |
| Section | Parallel Session: Hardware and Software Developments | |
| DOI | https://doi.org/10.1051/epjconf/202531912003 | |
| Published online | 06 March 2025 | |
https://doi.org/10.1051/epjconf/202531912003
The optical calibration system for the CTA-North Large Sized Telescope camera
1 INFN Roma 1
2 Universitá di Roma La Sapienza
* e-mail: maurizio.iori@roma1.infn.it
** e-mail: fabio.ferrarotto@roma1.infn.it
*** e-mail: antonio.girardi@roma1.infn.it
**** e-mail: riccardo.lunadei@roma1.infn.it
† e-mail: luigi.recchia@roma1.infn.it
Published online: 6 March 2025
The first Large-Sized Telescope (LST-1) for the Northern Site of the Cherenkov Telescope Array Observatory (CTAO) was inaugurated in October 2018 at the Observatorio del Roque de Los Muchachos (ORM) on La Palma (Canary Island). Other three LSTs are planned to be operational from 2026 in the same site. The LST camera requires a precise and regular calibration. The CaliBox is designed to fulfill the requirements for the camera calibration: monitoring the photon flux to guarantee the laser stability, uniform illumination, and intensity range. We present the design and performance of the optical system, photon flux monitor, related electronics, and evaluations and tests of the photon flux at the camera plane carried out at the INFN Rome1 Electronic laboratory.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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