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Modeling Single Photoelectron Pulse: A Triangle Pulse Approach in PMT Applications

This document presents a detailed model of a single photoelectron pulse designed to mirror actual photomultiplier tube (PMT) responses. The model features a triangular pulse, 15 ns wide at its base and peaking at 5 mV across a termination resistance ( Z ). The PMT gain, denoted as ( G ), is computed with respect to charge and resistance values, yielding a gain of approximately 5.44 million. This model aids in understanding the integral value under the pulse curve, establishing a framework for high-fidelity measurements in photonic applications.

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Modeling Single Photoelectron Pulse: A Triangle Pulse Approach in PMT Applications

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  1. DOM MB Gain Gerald Przybylski March 12, 2007 LBNL

  2. Handy Single Photoelectron Pulse Model Chosen for its similarity to an actual PMT pulse, a triangle pulse 15ns wide at the base by 5mV high across Z, the termination resistance. 0 -5mV 0 10ns 20ns

  3. A Single Photoelectron Model (15ns)(5mV) 2 Where Z is the termination resistance, and G is the PMT gain G = 37.5 pVs / ( Z . 1.602E-19 ) = 37.5 pVs / 43Ω / 1.602E-19 Coulomb = 5.44E6 = 37.5 pVs = Z G (1.602E-19)

  4. x 3 x 3 x 2.66

  5. ` The integral under the curve is92 x 1mV x 10ns = 920 pVs 920/37.5 = 24.53 x 3 x 2.66 = 23.9

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