Design of 4π Directional Radiation Detector based on Compton Scattering Effect Ghelman Max, Kopeika Natan, Rotman Stenley, Edvabsky Tal, Vax Eran and Osovizky Alon EPJ Web Conf., 253 (2021) 07003 Published online: 19 November 2021 DOI: 10.1051/epjconf/202125307003