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A cylindrical threshold Cherenkov detector has been designed and fabricated at the TIFR to determine the shape of the cosmic muon flux spectrum at the low energy ranges, which is the dominant component at the earth’s surface. This Cherenkov detector is sensitive to muons with a momentum threshold from around 1.2 to 6.5 GeV for the pressure of filled nitrogen at 0.5 to 16 bar respectively. It is proposed to measure the integral muon flux at these thresholds and fit the data based on a diffusion model of muon production by pions in the Earth’s atmosphere. Through this, we will be able to infer the feasibility of using a threshold Cherenkov detector to accurately measure the shape of the cosmic ray muon momentum distribution. The mechanical design details has been described herewith.

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Mechanical Design of a Threshold Cherenkov Detector

  • 会议论文

  • 发表日期：

    2025年

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  • Piyush Verma,
  • R. M. Chatterjee,
  • Gobinda Majumder,
  • Ravindra R. Shinde,
  • Santosh S. Chavan

摘要

A cylindrical threshold Cherenkov detector has been designed and fabricated at the TIFR to determine the shape of the cosmic muon flux spectrum at the low energy ranges, which is the dominant component at the earth’s surface. This Cherenkov detector is sensitive to muons with a momentum threshold from around 1.2 to 6.5 GeV for the pressure of filled nitrogen at 0.5 to 16 bar respectively. It is proposed to measure the integral muon flux at these thresholds and fit the data based on a diffusion model of muon production by pions in the Earth’s atmosphere. Through this, we will be able to infer the feasibility of using a threshold Cherenkov detector to accurately measure the shape of the cosmic ray muon momentum distribution. The mechanical design details has been described herewith.