PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Indirect. CRI-instrumentation EAS
The CODALEMA/EXTASIS experiment: a multi-scale and multi-wavelength instrument for radio-detection of extensive air-showers
B. Revenu*, D. Charrier, R. Dallier, A. Escudie, D. García-Fernández, A. Lecacheux and L. Martin
Full text: pdf
Pre-published on: August 16, 2017
Published on: August 03, 2018
Hosted by the Nançay Radio Observatory, the CODALEMA experiment is dedicated to radio detection of cosmic ray induced extensive air showers. It is composed of:
* 57 self-triggering radio detection stations working in the $20-200$ MHz band and spread over 1 km$^2$;
* an array of 13 scintillators as particle detector;
* a compact array made of $10$ cabled antennas, triggered by the particle detector;
* a small array of 5 cabled antennas, and whose role is to figure out the capabilities of a phased antenna cluster to cleverly select air shower events;
* a 3D detector, measuring the electric field in three orthogonal polarizations.

Also supported by CODALEMA is the R&D EXTASIS project, aiming at detecting the low-frequency signal (1-10 MHz) produced at the sudden disappearance of the air shower particles hitting the ground. All these antenna arrays present different density and extent, and can be operated in a joint mode to record simultaneously the radio signal coming from an air shower. Therefore, the Nançay facilities may offer a complete description of the air shower induced electric field at small, medium and large scale, and over an unique and very wide frequency band (from 2 to 200 MHz). We describe the current instrumental set-up and the performances of CODALEMA/EXTASIS.
DOI: https://doi.org/10.22323/1.301.0416
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