Abstract
The paper describes a simple and low cost instrumentation system for ground based cosmic ray air shower experiments. It is designed and fabricated at Gauhati University as part of a larger and more sophisticated instrumentation for a proposed 10 m × 10 m array to carry out a series of studies on cosmic rays. The system is tested on a 4-detector small prototype array with LED coincidence pulses. It is then used to determine the rate of omnidirectional air showers incident on the array. The dependence of 4-fold coincidence rate on array size is also investigated. The results of the tests are presented in the paper.
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Acknowledgements
The authors are thankful to Prof. B. S. Acharya of the Department of High Energy Physics, Tata Institute of Fundamental Research, Mumbai, India, for his valuable suggestions while the present work was being carried out, and also for donating a number of PMTs and scintillation blocks.
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Zamal, S., Das, N., Boruah, K. et al. Design and development of a simple instrumentation system for detection of secondary cosmic rays at ground level. Indian J Phys 91, 589–594 (2017). https://doi.org/10.1007/s12648-016-0944-4
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DOI: https://doi.org/10.1007/s12648-016-0944-4