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.

References in corpus (14)

• Test of a single module of the J-PET scanner based on plastic scintillators
• Positronium imaging with the novel multiphoton PET scanner
• J-PET: a new technology for the whole-body PET imaging
• Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography
• Simulating NEMA characteristics of the modular total-body J-PET scanner -- an economic total-body PET from plastic scintillators
• A novel method for the line-of-response and time-of-flight reconstruction in TOF-PET detectors based on a library of synchronized model signals
• A feasibility study of ortho-positronium decays measurement with the J-PET scanner based on plastic scintillators
• Genuine Multipartite Entanglement in the $3$-Photon Decay of Positronium
• QED and Fundamental Symmetries in Positronium Decays
• Calculation of time resolution of the J-PET tomograph using the Kernel Density Estimation
• Probing entanglement in Compton interactions
• Toward inertial sensing with a monochromatic $2^{3}S$ positronium beam
• Optimisation of the event-based TOF filtered back-projection for online imaging in total-body J-PET
• The ENUBET positron tagger prototype: construction and testbeam performance