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Monte Carlo Simulation of the Experimental Setup for Studying Entangled Annihilation Photons

  • PHYSICS OF ELEMENTARY PARTICLES AND ATOMIC NUCLEI. EXPERIMENT
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Abstract

This work presents the GEANT4 simulation of the experimental setup for studying the Compton scattering of annihilation photons and compares the simulation results with the experimental data. Two 511 keV photons are born in electron-positron annihilation at rest and have mutually orthogonal polarization which is measured by the system of Compton polarimeters. Each polarimeter consists of scatterer of initial annihilation photons and NaI(Tl) detectors of scattered at 90° photons. Additionally, an intermediate scatterer of GAGG scintillator is used to produce the tagged decoherent photons. Different cases of two-photon quantum states have been simulated. In the first case, the setup response to Compton scattering of entangled photons with mutually perpendicular polarization was studied. In the second case similar study was done for decoherent photons that are produced if one of the initial photons interacts in intermediate scatterer. Distinctions in Compton scattering for these two cases have been obtained and compared to the experimental results. Energy spectra in NaI(Tl) detectors and angular distributions of scattered photons are presented for both entangled and decoherent cases.

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Authors and Affiliations

  1. Institute for Nuclear Research, Russian Academy of Sciences, 117312, Moscow, Russia

    S. Musin, A. Ivashkin & A. Strizhak

  2. Moscow Institute of Physics and Technology (National Reserach University), 141700, Dolgoprudny, Moscow oblast, Russia

    S. Musin & A. Strizhak

Authors
  1. S. Musin
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  2. A. Ivashkin
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  3. A. Strizhak
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Correspondence to S. Musin.

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Musin, S., Ivashkin, A. & Strizhak, A. Monte Carlo Simulation of the Experimental Setup for Studying Entangled Annihilation Photons. Phys. Part. Nuclei Lett. 19, 681–684 (2022). https://doi.org/10.1134/S1547477122060176

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  • DOI: https://doi.org/10.1134/S1547477122060176

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