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5 Acta Physica Polonica A

5 2015

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Hit Time and Hit Position Reconstruction in the J-PET Detector Based on a Library of Averaged Model Signals

100%

Moskal P. , Sharma N. , Silarski M. , Bednarski T. , Białas P. , Bułka J. , Czerwiński E. , Gajos A. , Kamińska D. , Kapłon L. , Kochanowski A. , Korcyl G. , Kowal J. , Kowalski P. , Kozik T. , Krzemień W. , Kubicz E. , Niedźwiecki S. , Pałka M. , Raczyński L. , Rudy Z. , Rundel O. , Salabura P. , Słomski A. , Smyrski J. , Strzelecki A. , Wieczorek A. , Wiślicki W. , Wochlik I. , Zieliński M. , Zoń N.

Acta Physica Polonica A

2015

tom 127

nr 5

1495-1499

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 depend strongly on the position where particle hits 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.

Analysis Framework for the J-PET Scanner

100%

Krzemień W. , Gajos A. , Gruntowski A. , Stola K. , Trybek D. , Bednarski T. , Białas P. , Czerwiński E. , Kamińska D. , Kapłon Ł. , Kochanowski A. , Korcyl G. , Kowal J. , Kowalski P. , Kozik T. , Kubicz E. , Moskal P. , Niedźwiecki S. , Pałka M. , Raczyński L. , Rudy Z. , Salabura P. , Sharma N. , Silarski M. , Słomski A. , Smyrski J. , Strzelecki A. , Wieczorek A. , Wiślicki W. , Zieliński M. , Zoń N.

Acta Physica Polonica A

2015

tom 127

nr 5

1491-1494

J-PET analysis framework is a flexible, lightweight, ROOT-based software package which provides the tools to develop reconstruction and calibration procedures for PET tomography. In this article we present the implementation of the full data-processing chain in the J-PET framework which is used for the data analysis of the J-PET tomography scanner. The framework incorporates automated handling of PET setup parameters' database as well as high level tools for building data reconstruction procedures. Each of these components is briefly discussed.

Multiple Scattering and Accidental Coincidences in the J-PET Detector Simulated Using GATE Package

100%

Kowalski P. , Moskal P. , Wiślicki W. , Raczyński L. , Bednarski T. , Białas P. , Bułka J. , Czerwiński E. , Gajos A. , Gruntowski A. , Kamińska D. , Kapłon Ł. , Kochanowski A. , Korcyl G. , Kowal J. , Kozik T. , Krzemień W. , Kubicz E. , Niedźwiecki S. , Pałka M. , Rudy Z. , Salabura P. , Sharma N. , Silarski M. , Słomski A. , Smyrski J. , Strzelecki A. , Wieczorek A. , Wochlik I. , Zieliński M. , Zoń N.

Acta Physica Polonica A

2015

tom 127

nr 5

1505-1512

Novel positron emission tomography system, based on plastic scintillators, is developed by the J-PET collaboration. In order to optimize geometrical configuration of built device, advanced computer simulations are performed. Detailed study is presented of background given by accidental coincidences and multiple scattering of gamma quanta.

GPU Accelerated Image Reconstruction in a Two-Strip J-PET Tomograph

100%

Białas P. , Kowal J. , Strzelecki A. , Bednarski T. , Czerwiński E. , Gajos A. , Kamińska D. , Kapłon Ł. , Kochanowski A. , Korcyl G. , Kowalski P. , Kozik T. , Krzemień W. , Kubicz E. , Moskal P. , Niedźwiecki S. , Pałka M. , Raczyński L. , Rudy Z. , Rundel O. , Salabura P. , Sharma N. , Silarski M. , Słomski A. , Smyrski J. , Wieczorek A. , Wiślicki W. , Zieliński M. , Zoń N.

Acta Physica Polonica A

2015

tom 127

nr 5

1500-1504

We present a fast GPU implementation of the image reconstruction routine, for a novel two strip PET detector that relies solely on the time of flight measurements.

A Pilot Study of the Novel J-PET Plastic Scintillator with 2-(4-styrylphenyl)benzoxazole as a Wavelength Shifter

100%

Wieczorek A. , Moskal P. , Niedźwiecki S. , Bednarski T. , Białas P. , Czerwiński E. , Danel A. , Gajos A. , Gruntowski A. , Kamińska D. , Kapłon Ł. , Kochanowski A. , Korcyl G. , Kowal J. , Kowalski P. , Kozik T. , Krzemień W. , Kubicz E. , Molenda M. , Pałka M. , Raczyński L. , Rudy Z. , Rundel O. , Salabura P. , Sharma N. , Silarski M. , Słomski A. , Smyrski J. , Strzelecki A. , Uchacz T. , Wiślicki W. , Zieliński M. , Zoń N.

Acta Physica Polonica A

2015

tom 127

nr 5

1487-1490

For the first time a molecule of 2-(4-styrylphenyl)benzoxazole containing benzoxazole and stilbene groups is applied as a scintillator dopant acting as a wavelength shifter. In this article a light yield of the plastic scintillator, prepared from styrene doped with 2 wt% of 2,5-diphenylbenzoxazole and 0.03 wt% of 2-(4-styrylphenyl)benzoxazole, is determined to be as large as 60% ± 2% of the anthracene light output. There is a potential to improve this value in the future by the optimization of the additives concentrations.