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Semnan University Radio Array is a radio experiment aiming to detect ultra-high-energy cosmic rays and investigate their properties using radio-signal analyses. The first phase of this experiment is operational on the roof of the physics faculty of Semnan University. Investigating important cosmic-ray properties, including the primary particle’s energy scale, requires comparing experimental data and simulation-based studies. This necessitates measuring and deconvolving the frequency response of the experiment. In this study, we measure the frequency response of the SURA-4 electronic chain and perform a computer simulation of the Log-Periodic Dipole Antenna to obtain the system frequency response of the SURA-4 setup. We describe the procedure of deconvolving the measurements on the experimental data to reconstruct the strength of the electric field trace. The result makes it possible to investigate important cosmic-ray properties by comparing experimental data with simulation-based studies. [ABSTRACT FROM AUTHOR]

The first phase of the Semnan University Radio Array has started its operation. As the first radio experiment in the Middle East which aims to investigate the radio signal properties of cosmic rays, SURA presently consists of 5 radio stations including 4 log periodic and one Inverted-V dipole antennas. In its current format, the experiment acts as a self-trigger radio array. SURA operates in the relatively radio quiet frequency band of 40-80 MHz. In this work, we present technical information about SURA hardware including the antennas and the electronics followed by procedures that we used to analyze environmental noise and trigger logic studies. Both Inverted-V and LPDA antennas are built specifically for the SURA experiment and have broadband sensitivity in the SURA operative frequency range. Furthermore, an outlook of the SURA experiment, including choosing a new site for the experiment, adding a few particle detectors which will provide a hybrid detection of cosmic rays while acting as an external trigger for the radio setup and increasing the number of antennas and deploying the necessary equipment is also discussed. As a result of computer simulations and calculating the trigger efficiency of the experiment and by considering the technical specification of the experiment and background noise level at the location of the experiment, it is shown that SURA will be able to detect cosmic rays with E ≥ 1017eV energy. [ABSTRACT FROM AUTHOR]