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To study the feasibility of a shallow-depth neutrino detector, a Cosmic Muon Veto Detector (CMVD) is being built around the RPC detector stack at TIFR, Mumbai. The CMVD will use extruded plastic scintillators and wavelength-shifting fibers coupled with silicon photomultipliers (SiPMs). These SiPMs require a very accurate, precise, and stable power supply to maintain stable gain. We developed a bias voltage supply circuit that is capable of supplying \(18-68V\) in 50mV steps and up to about 4mA current. It features digital adjustment and stabilization of output voltage and current monitoring using a microcontroller. This circuit can be easily integrated with the front-end readout electronics of SiPMs.

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Design, Fabrication and Characterization of a Bias Supply Circuit for SiPMs

  • 会议论文

  • 发表日期：

    2025年

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  • Prajjalak Chattopadhyay,
  • Mandar N. Saraf,
  • Gobinda Majumder,
  • Satyanarayana Bheesette,
  • Ravindra R. Shinde

摘要

To study the feasibility of a shallow-depth neutrino detector, a Cosmic Muon Veto Detector (CMVD) is being built around the RPC detector stack at TIFR, Mumbai. The CMVD will use extruded plastic scintillators and wavelength-shifting fibers coupled with silicon photomultipliers (SiPMs). These SiPMs require a very accurate, precise, and stable power supply to maintain stable gain. We developed a bias voltage supply circuit that is capable of supplying \(18-68V\) in 50mV steps and up to about 4mA current. It features digital adjustment and stabilization of output voltage and current monitoring using a microcontroller. This circuit can be easily integrated with the front-end readout electronics of SiPMs.