Mass testing of SiPMs for the CMVD at IICHEP

Author:

Jangra Mamta12,Bhupen Raj12,Majumder Gobinda2,Gothe Kiran2,Saraf Mandar2,Parmar Nandkishor2,Satyanarayana Bheesette2,Shinde Ravindra2,Rao Shobha2,Upadhya Suresh S.2,Datar Vivek M.3,Glenzinski Douglas A.4,Bross Alan4,Pla-Dalmau Anna4,Zutshi Vishnu V.5,Group Robert Craig6,Dukes Edmond Craig6

Affiliation:

1. Homi Bhabha National Institute

2. Tata Institute of Fundamental Research

3. Institute of Mathematical Sciences

4. Fermi National Accelerator Laboratory

5. Northern Illinois University

6. University of Virginia

Abstract

A Cosmic Muon Veto Detector (CMVD) is being built around the mini-Iron Calorimeter (mini-ICAL) detector at the transit campus of the India based Neutrino Observatory, Madurai. The CMV detector will be made using extruded plastic scintillators with embedded wavelength shifting (WLS) fibres which propagate re-emitted photons of longer wavelengths to silicon photo-multipliers (SiPMs). The SiPMs detect these scintillation photons, producing electronic signals. The design goal for the cosmic muon veto efficiency of the CMV is >99.99% and fake veto rate less than 10^{-5}5. A testing system was developed, using an LED driver, to measure the noise rate and gain of each SiPM, and thus determine its overvoltage (V_{ov}ov). This paper describes the test results and the analysed characteristics of about 3.5k SiPMs.

Publisher

Stichting SciPost

Subject

General Medicine

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