J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams
Abstract
The J-PET detector, which consists of inexpensive plastic scintillators, has demonstrated its potential in the study of fundamental physics. In recent years, a prototype with 192 plastic scintillators arranged in 3 layers has been optimized for the study of positronium decays. This allows performing precision tests of discrete symmetries (C, P, T) in the decays of positronium atoms. Moreover, thanks to the possibility of measuring the polarization direction of the photon based on Compton scattering, the predicted entanglement between the linear polarization of annihilation photons in positronium decays can also be studied. Recently, a new J-PET prototype was commissioned, based on a modular design of detection units. Each module consists of 13 plastic scintillators and can be used as a stand-alone, compact and portable detection unit. In this paper, the main features of the J-PET detector, the modular prototype and their applications for possible studies with positron and positronium beams are discussed. Preliminary results of the first test experiment performed on two detection units in the continuous positron beam recently developed at the Antimatter Laboratory (AML) of Trento are also reported.
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Cite
@article{arxiv.2301.02832,
title = {J-PET detection modules based on plastic scintillators for performing studies with positron and positronium beams},
author = {S. Sharma and J. Baran and R. S. Brusa and R. Caravita and N. Chug and A. Coussat and C. Curceanu and E. Czerwinski and M. Dadgar and K. Dulski and K. Eliyan and A. Gajos and B. C. Hiesmayr and K. Kacprzak and L. Kaplon and K. Klimaszewski and P. Konieczka and G. Korcyl and T. Kozik and W. Krzemien and D. Kumar and S. Mariazzi and S. Niedzwiecki and L. Panasa and S. Parzych and L. Povolo and E. Perez del Rio and L. Raczynski and Shivani and R. Y. Shopa and M. Skurzok and E. L. Stepien and F. Tayefi and K. Tayefi and W. Wislicki and P. Moskal},
journal= {arXiv preprint arXiv:2301.02832},
year = {2023}
}