J-PET

J-PET detector has been recently constructed at the Jagiellonian University. It is optimized for the measurement of momentum and polarization of photons from the electron-positron annihilations. It is built out of strips of organic scintillator, forming a cylinder. Light signals from each strip are converted to electrical signals by photomultipliers placed at opposite ends of the strip. The signals are probed in the voltage domain with the accuracy of about 30 ps by a newly developed multithreshold digital electronics and the data are collected by the novel trigger-less and reconfigurable data acquisition system. The geometry and properties of the J-PET detector enable to design the positronium source such that the vector polarization of produced ortho-positronium can be determined. J-PET enables also determination of the polarization of registered photons. Poster will include the description of J-PET detector and its possibilities to determine polarization of ortho-positronium atoms and polarization of photons.

J-PET: P. Moskal et al., Nucl. Instrum. Meth. A764 (2014) 317.

J-PET: M. Pałka et al., Bio-Algorithms and Med-Systems 10, 41 (2014)

J-PET: G. Korcyl et al., Bio-Algorithms and Med-Systems 10, 37 (2014).

J-PET: D. Kamińska et al., Nukleonika 60 (2015) 729.

J-PET: P. Moskal et al., Nucl. Instrum. Meth. A775 (2015) 54.

J-PET: P. Moskal et al., Acta Phys.Polon. B47 (2016) 509.

J-PET G. Korcyl et al., Acta Phys. Pol. B 47 (2016) 491

J-PET: A. Gajos et al., Nucl. Instrum. Meth. A819 (2016) 54.

J-PET: O. Khreptak, M. Pawlik-Niedźwiecka, D. Alfs, T. Bednarski, P. Białas, E. Czerwiński, K. Dulski, A. Gajos, B. Głowacz, D. Kamińska, G. Korcyl, T. Kozik, N. Krawczyk, E. Kubicz, M. Mohammed, Sz. Niedźwiecki, Z. Rudy, M. Silarski, A. Wieczorek, M. Zieliński (Jagiellonian U., Cracow), C. Curceanu (LNF Frascati), M. Gorgol, B. Jasińska, B. Zgardzińska (Maria Curie U., Lublin), B.C. Hiesmayr (Vienna U.), P. Kowalski, W. Krzemień, L. Raczyński, W. Wiślicki (NCBJ, Swierk), P. Moskal (Jagiellonian U., Cracow)