Recent observations by ground-based detectors evidence the existence of long-lasting (minutes) gamma-ray and electron emissions associated to the passage of close thunderclouds. The gamma-ray spectrum extends to tens of MeV and is remarkably consistent with that of Terrestrial Gamma-ray Flashes (TGFs) observed from space.

Activity: We propose to design a novel detector suite to study this phenomenon, to be possibly employed either on-ground or on research airplanes. The instrument shall be based on highly segmented scintillating crystals and specifically tailored to the detection and imaging of photons in the energy range 20-60 MeV. In this energy range, photons carry important information directly from the source region, including the local orientation of the electric field. The work will be carried out using the GEANT4 simulation toolkit and will include:

  • simulation of the detector and optimization of its response,
  • simulation of the radiation propagation in the atmospheric layers from the source region to the detector.

Requirements: Basic knowledge of C++ programming language and Linux OS.

Keywords: Large area Single Photon Avalanche Diodes.

Project web page:TBD

IASF BO tutor: Martino Marisaldi