High Energy Physics researchers have traditionally used plastic scintillator paddles with photomultiplier tubes (PMTs) for cosmic ray muon detection, but PMTs are bulky, expensive, sensitive to magnetic fields and require relatively higher bias voltage. To address these issues, a compact scintillator paddle using silicon photomultipliers (SiPMs) was developed. Extruded Plastic Scintillator (EPS) strips, embedded with wavelength shifting (WLS) fibres were used. Custom mechanical and electronic components were designed, achieving over 99% muon detection efficiency. Dedicated front-end electronics was also developed, including amplifiers, discriminators, bias generator, and trigger logic. This paper details their construction, testing, and performance.

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A Compact Test and Trigger Scintillator with SiPM Readout and Custom Electronics

  • Mandar Saraf,
  • Prajjalak Chattopadhyay,
  • Mamta Jangra,
  • Gobinda Majumbder,
  • Raj Shah,
  • Ravindra Shinde

摘要

High Energy Physics researchers have traditionally used plastic scintillator paddles with photomultiplier tubes (PMTs) for cosmic ray muon detection, but PMTs are bulky, expensive, sensitive to magnetic fields and require relatively higher bias voltage. To address these issues, a compact scintillator paddle using silicon photomultipliers (SiPMs) was developed. Extruded Plastic Scintillator (EPS) strips, embedded with wavelength shifting (WLS) fibres were used. Custom mechanical and electronic components were designed, achieving over 99% muon detection efficiency. Dedicated front-end electronics was also developed, including amplifiers, discriminators, bias generator, and trigger logic. This paper details their construction, testing, and performance.