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http://hdl.handle.net/20.500.12386/31976
Titolo: | The Aperture Array Verification System 1: System overview and early commissioning results | Autori: | Benthem, P. Wayth, R. de Lera Acedo, E. Zarb Adami, K. ALDERIGHI, MONICA BELLI, Carolina BOLLI, Pietro Booler, T. Borg, J. Broderick, J. W. CHIARUCCI, Simone Chiello, R. Ciani, L. COMORETTO, Giovanni Crosse, B. Davidson, D. DeMarco, A. Emrich, D. van Es, A. FIERRO, DAVIDE Faulkner, A. Gerbers, M. Razavi-Ghods, N. Hall, P. Horsley, L. Juswardy, B. Kenney, D. Steele, K. Magro, A. MATTANA, Andrea McKinley, B. MONARI, JADER NALDI, Giovanni Nanni, J. DI NINNI, PAOLA Paonessa, F. PERINI, FEDERICO POLONI, MARCO PUPILLO, Giuseppe RUSTICELLI, SIMONE SCHIAFFINO, MARCO SCHILLIRO', FRANCESCO Schnetler, H. Singuaroli, R. Sokolowski, M. Sutinjo, A. Tartarini, G. Ung, D. Bij de Vaate, J. G. Virone, G. Walker, M. Waterson, M. Wijnholds, S. J. Williams, A. |
Data pubblicazione: | 2021 | Rivista: | ASTRONOMY & ASTROPHYSICS | Numero: | 655 | Da pagina:: | A5 | Abstract: | The design and development process for the Square Kilometre Array (SKA) radio telescope's Low Frequency Aperture Array component was progressed during the SKA pre-construction phase by an international consortium, with the goal of meeting requirements for a critical design review. As part of the development process a full-sized prototype SKA Low `station' was deployed - the Aperture Array Verification System 1 (AAVS1). We provide a system overview and describe the commissioning results of AAVS1, which is a low frequency radio telescope with 256 dual-polarisation log-periodic dipole antennas working as a phased array. A detailed system description is provided, including an in-depth overview of relevant sub-systems, ranging from hardware, firmware, software, calibration, and control sub-systems. Early commissioning results cover initial bootstrapping, array calibration, stability testing, beam-forming, and on-sky sensitivity validation. Lessons learned are presented, along with future developments. | URI: | http://hdl.handle.net/20.500.12386/31976 | URL: | https://www.aanda.org/articles/aa/full_html/2021/11/aa40086-20/aa40086-20.html | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/202040086 | Bibcode ADS: | 2021A&A...655A...5B | Fulltext: | open |
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