Methods for Accurate Measurement of the Response of Photomultiplier Tubes and Intensity of Light Pulses

Three different methods to determine accurately the intensity of weak light pulses measured with various photomultiplier tubes are presented. The methods rely on a precise determination of the response of the PMTs to the detection of a single photon. 10 kHz LED pulses attenuated to a level where on average μ = 0.02 to 30 photons are detected per pulse were used. For weak intensity light pulses wit...