1. INSTN, Centre CEA de Saclay, Saclay, France
2. Department of Nuclear and Elementary Particle Physics, School of Physics, AUTH, Thessaloniki, Greece
3. Department of Electrical Energy, School of Electrical and Computer Engineering, AUTH, Thessaloniki, Greece
4. Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos”, Athens, Greece