1. Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, UK
2. Scientific-technical and Educational Centre of low Temperature Studies, I. Franko National University of Lviv, 50 Dragomanova str., 79005, Lviv, Ukraine
3. University of Oxford, Department of Physics, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, UK
4. I. Franko National University of Lviv, Physics Department, 8 Kyrylo and Mefodiy str., 79005, Lviv, Ukraine
5. Lviv Polytechnic National University, S. Bandera str. 12, Lviv 79013, Ukraine