Pulse Height Analyzer with Coincident Correction
Casmika Saputra, Muhammad Miftahul Munir, Novitrian, Abdul Waris*

Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia

*awaris[at]fi.itb.ac.id

Abstract

Pulse Height Analyzer (PHA) is used to measure the frequency distribution of the signal output height of an event detector. However, the usual PHA algorithm has limitations in measurement- it cannot distinguish multiple peaks at the coincident signal. Coinciding signals will pile up signals that make the pulse height value higher than it should. Therefore, this study has developed a simple algorithm to calculate pulse height distribution with coincident correction. The developed algorithm firstly identified the coincident pulse by considering its pulse width. Then, the identified coincident pulse fitted with multiple peaks model. The result shows that the developed algorithm could distinguish multiple peaks at the coincident signal. The significance of pulse height distribution measured by the developed PHA algorithm compare to regular PHA was also discussed in this paper.

Keywords: algorithm, coincident, detector, pulse height

Topic: Instrumentation, Acoustics, and Signal Processing