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Licensed Unlicensed Requires Authentication Published by De Gruyter May 24, 2014

Simulations of γ quanta scattering in a single module of the J-PET detector

  • Konrad Szymański EMAIL logo , Paweł Moskal , Tomasz Bednarski , Piotr Białas , Eryk Czerwiński , Krzysztosz Giergiel , łukasz Kapłon , Andrzej Kochanowski , Grzegorz Korcyl , Jakub Kowal , Paweł Kowalski , Tomasz Kozik , Wojciech Krzemień , Marcin Molenda , Ines Moskal , Szymon Niedźwiecki , Marek Pałka , Monika Pawlik-Niedźwiecka , Lech Raczyński , Zbigniew Rudy , Piotr Salabura , Neha Sharma , Michał Silarski , Artur Słomski , Jerzy Smyrski , Adam Strzelecki , Piotr Witkowski , Wojciech Wiślicki , Marcin Zieliński and Natalia Zoń


This article describes the simulations of the scattering of annihilation γ quanta in a strip of a plastic scintillator. Such strips constitute the basic detection modules in a newly proposed positron emission tomography (PET), which utilizes plastic scintillators instead of inorganic crystals. An algorithm simulating the chain of Compton scatterings was elaborated and a series of simulations have been conducted for the scintillator strip with a cross-section of 5×19 mm. The results indicate that secondary interactions occur only in the case of about 8% of the events and only 25% of these events take place in the distance larger than 0.5 cm from the primary interaction. Also, the light signals produced at the primary and secondary interactions overlap with the delay, the distribution of which is characterized by a full width at half-maximum (FWHM) of about 40 ps.

Corresponding author: Konrad Szymański, Institute of Physics, Jagiellonian University, 30-059 Cracow, Poland, E-mail:


We acknowledge technical and administrative support by M. Adamczyk, T. Gucwa-Ryś, A. Heczko, M. Kajetanowicz, G. Konopka-Cupiał, J. Majewski, W. Migdał, and A. Misiak and the financial support by the Polish National Center for Development and Research through Grant INNOTECH-K1/IN1/64/159174/NCBR/12, the Foundation for Polish Science through the MPD program, and the EU and MSHE Grant No. POIG.02.03.00-161 00-013/09.

Conflict of interest statement

Authors’ conflict of interest disclosure: The authors stated that there are no conflicts of interest regarding the publication of this article. Research funding played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.

Research funding: None declared.

Employment or leadership: None declared.

Honorarium: None declared.


1. Moskal P, Bednarski T, Białas P, Ciszewska M, Czerwiński E, Heczko A, et al. TOF-PET detector concept based on organic scintillators. In: Positron Emission Tomography in Research and Diagnostics Conference, May 16–19, 2012. Warsaw: Nuclear Medicine Review, 2012: C68–C69.Search in Google Scholar

2. NIST XCOM (dynamic content). Photon cross-section database. Retrieved April 30, 2013 from in Google Scholar

3. Wolfram Research (dynamic content). Online integrator. Retrieved April 30, 2013 fromˆ2+x+%29%2F%281%2Bg%281-cos+x%29%29ˆ2+2+pi+sin+x random=false.Search in Google Scholar

4. Silarski M. Polymer scintillators for PET produced commercially. Cracow: Jagiellonian University, 2012 (PET UJ Report nr 19/2012).Search in Google Scholar

5. Moskal P, Salabura P, Silarski M, Smyrski J, Zdebik J, Zieliński M. Novel detector systems for the positron emission tomography. Bio-Algorithms Med-Systems 2011;7:73–8.Search in Google Scholar

6. Moskal P, Bednarski T, Białas P, Ciszewska M, Czerwiński E, Heczko A, et al. Strip-PET: a novel detector concept for the <softenter;TOF-PET scanner. Nucl Med Rev 2012;15:C68.Search in Google Scholar

Received: 2013-10-28
Accepted: 2014-3-16
Published Online: 2014-5-24
Published in Print: 2014-6-30

©2014 by Walter de Gruyter Berlin/Boston

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