Improved X-ray detection and particle identification with avalanche photodiodes
Instrumentation and Detectors
2015-05-27 v1
Abstract
Avalanche photodiodes are commonly used as detectors for low energy x-rays. In this work we report on a fitting technique used to account for different detector responses resulting from photo absorption in the various APD layers. The use of this technique results in an improvement of the energy resolution at 8.2 keV by up to a factor of 2, and corrects the timing information by up to 25 ns to account for space dependent electron drift time. In addition, this waveform analysis is used for particle identification, e.g. to distinguish between x-rays and MeV electrons in our experiment.
Cite
@article{arxiv.1505.06879,
title = {Improved X-ray detection and particle identification with avalanche photodiodes},
author = {Marc Diepold and Luis M. P. Fernandes and Jorge Machado and Pedro Amaro and Marwan Abdou-Ahmed and Fernando D. Amaro and Aldo Antognini and François Biraben and Tzu-Ling Chen and Daniel S. Covita and Andreas J. Dax and Beatrice Franke and Sandrine Galtier and Andrea L. Gouvea and Johannes Götzfried and Thomas Graf and Theodor W. Hänsch and Malte Hildebrandt and Paul Indelicato and Lucile Julien and Klaus Kirch and Andreas Knecht and Franz Kottmann and Julian J. Krauth and Yi-Wei Liu and Cristina M. B. Monteiro and Françoise Mulhauser and Boris Naar and Tobias Nebel and François Nez and José Paulo Santos and Joaquim M. F. dos Santos and Karsten Schuhmann and Csilla I. Szabo and David Taqqu and João F. C. A. Veloso and Andreas Voss and Birgit Weichelt and Randolf Pohl},
journal= {arXiv preprint arXiv:1505.06879},
year = {2015}
}
Comments
6 pages, 6 figures