Modular J-PET with Improved o-Ps Detection Efficiency for CPT Tests

TL;DR

The paper discusses the development of Modular J-PET, an improved plastic scintillator detector designed to enhance o-Ps decay detection efficiency for more sensitive CPT violation tests, supported by simulation studies.

Contribution

Introduction of Modular J-PET with a new scintillator layer to improve three-photon detection efficiency for CPT tests.

Findings

Simulation results support the effectiveness of the new detector design.

Enhanced detection efficiency aims to reach CPT violation sensitivity of 10^{-5}.

Modular J-PET offers a scalable approach for future positronium decay experiments.

Abstract

J-PET is a photon detector built of plastic scintillators, which already has been commissioned for CPT studies in the decays of positronium. In the first experiment, J-PET has achieved a sensitivity to CPT violation at a level of 10^{-4}, and now it aims to reach a level of 10^{-5}. This will be done by enhancing the three-photon registration efficiency for ortho-positronium decays using a new layer of densely packed plastic scintillators termed Modular J-PET. We present the simulation studies performed for different experimental detection setups to be used for the next CPT test with the Modular J-PET detector.