Nukleonika (Dec 2015)
Reconstruction of hit time and hit position of annihilation quanta in the J-PET detector using the Mahalanobis distance
- Sharma Neha Gupta,
- Silarski Michał,
- Bednarski Tomasz,
- Białas Piotr,
- Czerwiński Eryk,
- Gajos Aleksander,
- Gorgol Marek,
- Jasińska Bożena,
- Kamińska Daria,
- Kapłon Łukasz,
- Korcyl Grzegorz,
- Kowalski Paweł,
- Kozik Tomasz,
- Krzemień Wojciech,
- Kubicz Ewelina,
- Niedźwiecki Szymon,
- Pałka Marek,
- Raczyński Lech,
- Rudy Zbigniew,
- Rundel Oleksandr,
- Słomski Artur,
- Strzelecki Adam,
- Wieczorek Anna,
- Wiślicki Wojciech,
- Zieliński Marcin,
- Zgardzińska Bożena,
- Moskal Paweł
Affiliations
- Sharma Neha Gupta
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Silarski Michał
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Bednarski Tomasz
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Białas Piotr
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Czerwiński Eryk
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Gajos Aleksander
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Gorgol Marek
- Department of Nuclear Methods, Institute of Physics, Maria Curie-Sklodowska University, 1 M. Curie-Sklodowskiej Sq., 20-031, Lublin, Poland
- Jasińska Bożena
- Department of Nuclear Methods, Institute of Physics, Maria Curie-Sklodowska University, 1 M. Curie-Sklodowskiej Sq., 20-031, Lublin, Poland
- Kamińska Daria
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Kapłon Łukasz
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland and Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, 25 W. Reymonta Str., 30-059, Kraków, Poland
- Korcyl Grzegorz
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Kowalski Paweł
- Świerk Computing Centre, National Centre for Nuclear Research, 7 Andrzeja Soltana Str., 05-400 Otwock/Świerk, Poland
- Kozik Tomasz
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Krzemień Wojciech
- High Energy Physics Division, National Centre for Nuclear Research, 7 Andrzeja Soltana Str., 05-400 Otwock/Świerk, Poland
- Kubicz Ewelina
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Niedźwiecki Szymon
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Pałka Marek
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Raczyński Lech
- Świerk Computing Centre, National Centre for Nuclear Research, 7 Andrzeja Soltana Str., 05-400 Otwock/Świerk, Poland
- Rudy Zbigniew
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Rundel Oleksandr
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Słomski Artur
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Strzelecki Adam
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Wieczorek Anna
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland and Institute of Metallurgy and Materials Science of the Polish Academy of Sciences, 25 W. Reymonta Str., 30-059, Kraków, Poland
- Wiślicki Wojciech
- Świerk Computing Centre, National Centre for Nuclear Research, 7 Andrzeja Soltana Str., 05-400 Otwock/Świerk, Poland
- Zieliński Marcin
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- Zgardzińska Bożena
- Department of Nuclear Methods, Institute of Physics, Maria Curie-Sklodowska University, 1 M. Curie-Sklodowskiej Sq., 20-031, Lublin, Poland
- Moskal Paweł
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, 11 S. Łojasiewicza Str., 30-348, Kraków, Poland
- DOI
- https://doi.org/10.1515/nuka-2015-0138
- Journal volume & issue
-
Vol. 60,
no. 4
pp. 765 – 769
Abstract
The J-PET detector being developed at the Jagiellonian University is a positron emission tomograph composed of the long strips of polymer scintillators. At the same time, it is a detector system that will be used for studies of the decays of positronium atoms. The shape of photomultiplier signals depends on the hit time and hit position of the gamma quantum. In order to take advantage of this fact, a dedicated sampling front-end electronics that enables to sample signals in voltage domain with the time precision of about 20 ps and novel reconstruction method based on the comparison of examined signal with the model signals stored in the library has been developed. As a measure of the similarity, we use the Mahalanobis distance. The achievable position and time resolution depend on the number and values of the threshold levels at which the signal is sampled. A reconstruction method as well as preliminary results are presented and discussed.
Keywords
