1. Physics Department, Universityof Salerno, Fisciano, Italy
2. Physics Department, University of Milano-Bicocca, Milano, Italy
3. Center for Axion and Precision Physics Research, Institute for Basic Science (IBS), Daejeon, South Korea
4. Physics Department, University of Salerno, Fisciano, Italy
5. Mathematics and Physics Department, University of Salento, Lecce, Italy
6. CNR INO, Povo, Italy
7. Fondazione Bruno Kessler, Povo, Italy
8. INFN - Laboratori Nazionali di Frascati, Frascati, Italy
9. INRiM - Istituto Nazionale di Ricerca Metrologica, Torino, Italy
10. Science and Technology Department, University of Sannio, Benevento, Italy
11. Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
12. INFN - Gruppo Collegato Salerno, Fisciano, Italy
13. Physics Department, University of Trento, Povo, Italy
14. Engineering Department, University of Sannio, Benevento, Italy