# Improving sensitivity of a BEGe-based high-purity germanium spectrometer through pulse shape analysis

The European Physical Journal C, May 2018

We performed Pulse Shape Analysis to separate single-scattered gamma energy deposition events from multiple-scattered photons in a high-sensitivity $$\gamma$$-ray spectrometer. The spectrometer is based on a Broad Energy High Purity Germanium detector and the developed technique uses multivariate analysis by an application of the Multi-Layer Perceptron Neural Network. A very good separation of the single-site- and multi-site events was achieved leading to a significant reduction of the background level of the investigated spectrometer – the double escape peak, rich in single-site events, was reduced by 95%, while the full energy peaks lost at most 25% of their counts. The peak to Compton ratio, calculated for the 2614.5 keV gamma line from $$^{208}$$Tl, was improved by 114.3%.

This is a preview of a remote PDF: https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-018-5852-7.pdf

M. Misiaszek, K. Panas, M. Wojcik, G. Zuzel, M. Hult. Improving sensitivity of a BEGe-based high-purity germanium spectrometer through pulse shape analysis, The European Physical Journal C, 2018, 392, DOI: 10.1140/epjc/s10052-018-5852-7