Marian Smoluchowski
Institute of Physics

Jagiellonian University

Publications

ARTICLES

1. Towards the reconstruction of air showers with the J-PET system
   Atrayee Basu, Alessio Porcelli, Magdalena Skurzok, Pawel Moskal
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   abstract

   6th Jagiellonian Symposium on Advances in Particle Physics and Medicine 2026
   The ?P P ET project addresses the longstanding muon puzzle by constructing a phenomenological model of hadronic interactions that accounts for QCD corrections from polarisation effects [1]. A central challenge is reconstructing muon trajectories relative to the primary cosmic ray direction. The J-PET Big Barrel (BB) [2] serves as the muon detector, with its geometric resolution already established. For primary direction reconstruction, the Modular J-PET [3] is reconfigured and distributed across the rooftop of the Department of Physics, Astronomy, and Applied Computer Science at Jagiellonian University, forming the Modular Array (MA). MA will provide time synchronisation of the shower. In this work, we present early-stage progress towards the simulation and analysis foundation of the ?P P ET reconstruction pipeline. Using the J-PET framework and its calibration methodology [4], a GEANT4-based description of the array response to air-shower secondaries is under development alongside the analysis of cosmic muon data, with attention to extracting energyrelated observables from timestamps. We studied the potential of this configuration, and this foundational work is intended to support subsequent studies of shower geometry.
2. Towards the reconstruction of air showers with the J-PET system
   Atrayee Basu, Alessio Porcelli, Magdalena Skurzok, Pawel Moskal
   download

   abstract

   6th Jagiellonian Symposium on Advances in Particle Physics and Medicine 2026
   The ?P P ET project addresses the longstanding muon puzzle by constructing a phenomenological model of hadronic interactions that accounts for QCD corrections from polarisation effects [1]. A central challenge is reconstructing muon trajectories relative to the primary cosmic ray direction. The J-PET Big Barrel (BB) [2] serves as the muon detector, with its geometric resolution already established. For primary direction reconstruction, the Modular J-PET [3] is reconfigured and distributed across the rooftop of the Department of Physics, Astronomy, and Applied Computer Science at Jagiellonian University, forming the Modular Array (MA). MA will provide time synchronisation of the shower. In this work, we present early-stage progress towards the simulation and analysis foundation of the ?P P ET reconstruction pipeline. Using the J-PET framework and its calibration methodology [4], a GEANT4-based description of the array response to air-shower secondaries is under development alongside the analysis of cosmic muon data, with attention to extracting energyrelated observables from timestamps. We studied the potential of this configuration, and this foundational work is intended to support subsequent studies of shower geometry.