The compact array is a small cluster installed since mid 2013 of 10 antennas in dual linear horizontal polarization, distributed over a 3 branch star of 150 m × 150 m × 150 m (24 to 146 m spacing) in the middle of the CODALEMA particle detector.

One of the 10 Compact Array antennas, derived from the NenuFAR ones. One of the 10 Compact Array antennas, derived from the NenuFAR ones.

The individual active antenna is an inverted V-shape, fat dipole, similar to the ones used on the Long Wavelength Array interferometer (LWA) in New Mexico, but equipped with the LONAMOS LNA . The same active antennas are also used on the NenuFAR instrument.

This so-called “Compact Array” (CA) is intended to provide a solution based on real time, coherent radio detection operating in continuous sky surveying mode, the final detection scheme being achieved by using on line, fast computing software based on a dedicated unsupervised recognition algorithm. Some results are presented in:

A.Lecacheux et al., 35th International Cosmic Ray Conference, Jul 2017, Busan, South Korea. pp.418, https://pos.sissa.it/301/418/