RPID - A new digital particle identification algorithm for CsI(Tl) scintillators

Publication Type
Journal Article
Year of Publication
2013
Authors
Bendel, M.
Gernhauser, R.
Henning, W. F.
Krucken, R.
Le Bleis, T.
Winkel, M.
Name of Publication
European Physical Journal A
Volume
49
Issue
6
Date Published
Jun
Short Title
RPID - A new digital particle identification algorithm for CsI(Tl) scintillators
Accession Number
WOS:000321431100004
ISBN Number
1434-6001
DOI
10.1140/epja/i2013-13069-8
Abstract

A new digital algorithm for online particle identification in CsI(Tl), called Reconstructive Particle IDentification (RPID) is reported. The concept is based on a model for the signal generation with two exponential components for the scintillation light output and an exponential response function of the preamplifier. To provide a fast algorithm which could be used online in modern FPGA-based electronics a simplified method for signal deconvolution was developed. Within a few simple processing steps the original pulse shape is modified to recover the amplitudes of the two scintillation components that determine the type of particle. Data from an experiment C-12(p, p')C-12* at 21 MeV allowed to separate gamma-rays and protons even of very low energies. We present the performance of this new algorithm concerning the gamma-proton separation as well as the identification of protons not fully stopped within the CsI(Tl).