The Array Control and Data Acquisition System of the Cherenkov Telescope Array
Igor Oya
(1, 2)
,
Ermete Antolini
(2)
,
Matthias Füssling
(2)
,
J A Hinton
(2)
,
Alison Mitchell
(2)
,
Stefan Schlenstedt
(2)
,
Leonardo Baroncelli
(3)
,
Andrea Bulgarelli
(3)
,
Vito Conforti
(3)
,
Nicolò Parmiggiani
(3)
,
J Borkowski
(4)
,
Alessandro Carosi
(5)
,
Jean Jacquemier
(5)
,
Gilles Maurin
(5)
,
J. Colomé
(6)
,
Clemens Hoischen
(7)
,
Dylan Lebout
(8)
,
Etienne Lyard
(9)
,
Roland Walter
(9)
,
David Melkumyan
(1)
,
K. Mosshammer
(1)
,
Iftach Sadeh
(1)
,
Thomas Schmidt
(1)
,
Peter Wegner
(1)
,
Ullrich Schwanke
(10)
,
Joseph Schwarz
(11)
,
Giacomo Tosti
(12)
1
DESY -
Deutsches Elektronen-Synchrotron [Zeuthen]
2 CTAO gGmbH - Therenkov Telescope Array Observatory gGmbH [Heidelberg]
3 OABO - INAF - Osservatorio Astronomico di Bologna
4 CAMK - Copernicus Astronomical Center of the Polish Academy of Sciences
5 LAPP - Laboratoire d'Annecy de Physique des Particules
6 IEEC-CSIC - Institute for Space Studies of Catalonia [Barcelona]
7 University of Potsdam = Universität Potsdam
8 ILDA - Interacting with Large Data
9 UNIGE - Université de Genève = University of Geneva
10 HU Berlin - Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin
11 OAB - INAF - Osservatorio Astronomico di Brera
12 UNIPG - Università degli Studi di Perugia = University of Perugia
2 CTAO gGmbH - Therenkov Telescope Array Observatory gGmbH [Heidelberg]
3 OABO - INAF - Osservatorio Astronomico di Bologna
4 CAMK - Copernicus Astronomical Center of the Polish Academy of Sciences
5 LAPP - Laboratoire d'Annecy de Physique des Particules
6 IEEC-CSIC - Institute for Space Studies of Catalonia [Barcelona]
7 University of Potsdam = Universität Potsdam
8 ILDA - Interacting with Large Data
9 UNIGE - Université de Genève = University of Geneva
10 HU Berlin - Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin
11 OAB - INAF - Osservatorio Astronomico di Brera
12 UNIPG - Università degli Studi di Perugia = University of Perugia
Résumé
The Cherenkov Telescope Array (CTA) project is the initiative to build the next-generation gamma-ray observatory. With more than 100 telescopes planned to be deployed at two sites, CTA is one of the largest astronomical facilities under construction. The Array Control and Data Acquisition (ACADA) system will be the central element of on-site CTA Observatory operations. The mission of the ACADA system is to manage and optimize the telescope array operations at each of the CTA sites. To that end, ACADA will provide all necessary means for the efficient execution of observations, and for the handling of the several Gb/s of data generated by each individual CTA telescope. The ACADA system will contain a real-time analysis pipeline, dedicated to the automatic generation of science alert candidates as data are being acquired. These science alerts, together with external alerts arriving from other scientific installations, will permit ACADA to modify ongoing observations at sub-minute timescales in order to study high-impact scientific transient phenomena. This contribution describes the challenges, architecture, design principles, and development status of the ACADA system.
