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Licensed Unlicensed Requires Authentication Published by De Gruyter February 15, 2014

Calibration of photomultipliers gain used in the J-PET detector

  • Tomasz Bednarski EMAIL logo , Eryk Czerwiński , Paweł Moskal , Piotr Białas , Krzysztof 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 , Lech Raczyński , Zbigniew Rudy , Piotr Salabura , Neha Gupta Sharma , Michał Silarski , Artur Słomski , Jerzy Smyrski , Adam Strzelecki , Konrad Jan Szymański , Wojciech Wiślicki , Piotr Witkowski , Marcin Zieliński and Natalia Zoń


Photomultipliers are commonly used in commercial PET scanner as devices that convert light produced in scintillator by gamma quanta from positron-electron annihilation into electrical signal. For proper analysis of obtained electrical signal, a photomultiplier gain curve must be known, since gain can be significantly different even between photomultipliers of the same model. In this article, we describe single photoelectron method used for photomultiplier calibration applied for J-PET scanner, a novel PET detector being developed at Jagiellonian University. A description of calibration method, an example of calibration curve, and a gain of few Hamamatsu R4998 photomultipliers are presented.

Corresponding author: Tomasz Bednarski, Institute of Physics, Jagiellonian University, 30-059 Kraków, Poland, E-mail:


We acknowledge the 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 MPD program, the EU and MSHE Grant No. POIG.02.03.00-161 00-013/09, and the Małopolskie Centre of Entrepreneurship through Doctus program.

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 thestudy design; in the collection, analysis, and interpretationof data; in the writing of the report; or in the decision tosubmit the report for publication.

Research funding: None declared.

Employment or leadership: None declared.

Honorarium: None declared.


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Received: 2013-10-29
Accepted: 2014-1-7
Published Online: 2014-2-15
Published in Print: 2014-3-31

©2014 by Walter de Gruyter Berlin/Boston

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