Hit time and hit position reconstruction in the J-PET detector based on a library of averaged model signals

TL;DR

This paper introduces a new method for reconstructing hit time and position in long scintillator detectors using a library of averaged signals, validated with experimental data from the J-PET detector prototype.

Contribution

The paper presents a novel library-based approach for hit reconstruction that leverages signal shape and amplitude dependence on hit position.

Findings

Effective reconstruction of hit time and position demonstrated

Method validated with experimental data from J-PET prototype

Potential for improved detector resolution and accuracy

Abstract

In this article we present a novel method of hit time and hit position reconstruction in long scintillator detectors. We take advantage of the fact that for this kind of detectors amplitude and shape of registered signals depends strongly on the position where particle hit the detector. The reconstruction is based on determination of the degree of similarity between measured and averaged signals stored in a library for a set of well-defined positions along the scintillator. Preliminary results of validation of the introduced method with experimental data obtained by means of the double strip prototype of the J-PET detector are presented.