We present the Engineering Development Array 2, which is one of two instruments built as a second generation prototype station for the future Square Kilometre Array Low Frequency Array. The array is comprised of 256 dual-polarization dipole antennas that can work as a phased array or as a standalone interferometer. We describe the design of the array and the details of design changes from previous generation instruments, as well as the motivation for the changes. Using the array as an imaging interferometer, we measure the sensitivity of the array at five frequencies ranging from 70 to 320 MHz.
@article{arxiv.2112.00908,
title = {The Engineering Development Array 2: design, performance and lessons from an SKA-Low prototype station},
author = {Randall Wayth and Marcin Sokolowski and Jess Broderick and Steven J. Tingay and Raunaq Bhushan and Tom Booler and Riccardo Chiello and David B. Davidson and David Emrich and Budi Juswardy and David Kenney and Giulia Macario and Alessio Magro and Andrea Mattana and David Minchin and Jader Monari and Andrew McPhail and Federico Perini and Giuseppe Pupillo and Marco Schiaffino and Ravi Subrahmanya and Andre van Es and Mia Walker and Mark Waterson},
journal= {arXiv preprint arXiv:2112.00908},
year = {2021}
}
Comments
To appear in SPIE JATIS special section on SKA Observatory