Muon telescope: An experimental observation of leptonbased on coincidence technique

Cosmic rays are high energy radiation originating in the cosmos, consisting of nucleonic fragments that rain down on the earth from outside the solar system in the form of Extensive Air Shower (EAS). There are several secondaries generated in these showers. The most common fundamental particles to reach the Earth’s surface are muons, electrons, neutrinos, and gamma rays. The easiest way to extract information from these particles is by keeping the detector on earth’s surface. By requiring coincidence in several detectors, background radiation will automatically be sorted out. A muon telescope consisting of two polystyrene plastic scintillation detectors has been set up in our laboratory. In this paper, secondary flux has been observed by increasing the distance between the detectors, horizontally as well as vertically. This study has been extended for observing the flux on keeping the detector inside, outside and on the top (4.5 meters) of the laboratory building. Horizontal separation, vertical separation, data inside, outside and at the roof of the laboratory building, are five measurements performed using Muon Telescope at constant threshold of discriminator. In this process, one detector was kept at the fixed position and the other detector has been moved with respect to the first one. SEASA (Stockholm Educational Air Shower Array) in Alba Nova Physics Centre in Stockholm, has performed this detector separation study with three detectors and it has been observed that the count rate decreases with the separation between the detectors because the telescope loses the sensitivity to lower energy shower.