The optical calibration system for the CTAO-South Large-Sized Telescope camera

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F25%3A00646039" target="_blank" >RIV/67985815:_____/25:00646039 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/25:00646039 RIV/61989592:15310/25:73635271

Result on the web

<a href="https://pos.sissa.it/501/792/pdf" target="_blank" >https://pos.sissa.it/501/792/pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.501.0792" target="_blank" >10.22323/1.501.0792</a>

Result language

angličtina

Original language name

The optical calibration system for the CTAO-South Large-Sized Telescope camera

Original language description

The Cherenkov Telescope Array Observatory (CTAO) is the next-generation γ -ray observatory. CTAO foresees two observation sites, one located in the Northern Hemisphere (Canary Island of La Palma) and the other in the Southern Hemisphere (Atacama Desert in Chile), for observing γ -ray events coming from all over the celestial vault. Thanks to the CTA+ program, two Large-Sized Telescopes (LST) will be added to the baseline configuration of the CTAO Southern array of telescopes. The Cherenkov-imaging cameras of the LSTs are compounded of 1855 photomultiplier tubes (PMTs) covering a hexagonal area of around 4.5 m2. Each camera is calibrated by a system, dubbed Camera Calibration Box (CCB) and placed at the center of the telescope mirror’s dish surface. The CCB illuminates the PMTs also during the observation time (100 Hz, interleaved flat-field events) with a uniform, intensity-selectable, and diffuse UV (355 nm) light. The CCB is especially designed to withstand the extremely harsh environmental conditions of the CTAO Southern site and to provide high accessibility and maintainability. This contribution presents the CCB's key and peculiar design characteristics, in particular the optical and the software interface design choices including the internal stable and high sensitivity photon flux monitoring system.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of Science

ISBN

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ISSN

1824-8039

e-ISSN

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Number of pages

8

Pages from-to

792

Publisher name

Sissa Medilab srl

Place of publication

Trieste

Event location

Ženeva

Event date

Jul 15, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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