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A Real-time, large area, high space resolution particle radiography system

Lo Presti, Domenico and Bonanno, Danilo Luigi and Longhitano, Fabio and Pugliatti, Cristina and Aiello, Sebastiano and Cirrone, Giuseppe Antonio Pablo and Giordano, Valentina Maria and Leonora, Emanuele and Randazzo, Nunzio and Romano, Francesco and Russo, Giovanni Valerio and Sipala, Valeria and Stancampiano, Concetta and Ventura, C. (2014) A Real-time, large area, high space resolution particle radiography system. Journal of Instrumentation, Vol. 9 (6). eISSN 1748-0221. Article.

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DOI: 10.1088/1748-0221/9/06/C06012

Abstract

In this paper we describe a new detection system for the high resolution measurement of the residual range of charged particles, designed and developed with the aim of achieving real-time data acquisition and large detection areas. A prototype of the residual range detector, with a sensitive area of about 4 × 4 cm2, consisting of a stack of sixty ribbons of scintillating fibers (Sci-Fi) has been designed and tested. Each layer is read-out by two wavelength shifter (WLS) fibers and a position sensitive photomultiplier (PSPM). The Bragg peak shape is calculated real-time by the time over a suitable threshold for each channel. The results of the measurements taken using the prototype and a 62 MeV proton beam and a comparison with the GEANT4 simulations of the detector are presented. The main concepts on which the prototype is based have been used to demonstrate the technique patented by the INFN. The next step will be to design and validate the final detector which will have 30 × 30 cm2 FOV and cover the 250 MeV proton range with about 150 micron range resolution. These performances are suitable for almost all medical imaging applications.

Item Type:Article
ID Code:10222
Status:Published
Refereed:Yes
Uncontrolled Keywords:Instrumentation for hadron therapy, real-time monitoring, optical detector readout concepts, dosimetry concepts and apparatus
Subjects:Area 02 - Scienze fisiche > FIS/07 Fisica applicata (a beni culturali, ambientali, biologia e medicina)
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Chimica e Farmacia
Publisher:Institute of Physics Publishing and SISSA
eISSN:1748-0221
Deposited On:27 Oct 2014 08:47

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