35 - Comparative Analysis of the Quantum Efficiency and Electrical Signals: Photomultiplier Tube vs Silicon Photomultipliers
Description/Abstract/Artist Statement
This experiment aims to compare the quantum efficiency (photon detection efficiency) of a Photomultiplier Tube (PMT) and a Silicon Photomultiplier (SiPM), while also verifying the quantum efficiency of the SiPM itself against expected values. A key objective is to attenuate the light pulse from an LED to a level where single-photon detection is possible, and to determine whether these events are distinguishable from electronic noise. Additionally, the PMT and SiPM pulse shape responses will be analyzed and compared. For data collection, a Python script was developed to communicate with a Raspberry Pi that is connected to an oscilloscope, automating the collection and visualization methods of the experiment by processing the pulses into Voltage vs. Time graphs and histograms that illustrate the electron counts and waveform areas of each pulse. Furthermore, custom PVC foamboard cases were manufactured by hand to house the PMT and SiPM separately, as well as the LEDs for each detector. Although only trial data has been collected, the experimental setup is operational and presently outputting preliminary data to be interpreted. The results of this study could provide insights into the photon detection capabilities of both devices and their suitability in low-light applications.
Faculty Advisor/Mentor
Charles Hyde, Alex Garrett
Faculty Advisor/Mentor Department
Physics
College Affiliation
College of Sciences
Presentation Type
Poster
Disciplines
Atomic, Molecular and Optical Physics
35 - Comparative Analysis of the Quantum Efficiency and Electrical Signals: Photomultiplier Tube vs Silicon Photomultipliers
This experiment aims to compare the quantum efficiency (photon detection efficiency) of a Photomultiplier Tube (PMT) and a Silicon Photomultiplier (SiPM), while also verifying the quantum efficiency of the SiPM itself against expected values. A key objective is to attenuate the light pulse from an LED to a level where single-photon detection is possible, and to determine whether these events are distinguishable from electronic noise. Additionally, the PMT and SiPM pulse shape responses will be analyzed and compared. For data collection, a Python script was developed to communicate with a Raspberry Pi that is connected to an oscilloscope, automating the collection and visualization methods of the experiment by processing the pulses into Voltage vs. Time graphs and histograms that illustrate the electron counts and waveform areas of each pulse. Furthermore, custom PVC foamboard cases were manufactured by hand to house the PMT and SiPM separately, as well as the LEDs for each detector. Although only trial data has been collected, the experimental setup is operational and presently outputting preliminary data to be interpreted. The results of this study could provide insights into the photon detection capabilities of both devices and their suitability in low-light applications.