VOXES, a new high resolution X-ray spectrometer for low yield measurements with diffused sources

摘要

The VOXES project's goal is to realize the first prototype of a highresolution and high precision X-ray spectrometer for diffused sources, usingHighly Annealed Pyrolitic Graphite (HAPG) crystals combined with precisionposition detectors. The aim is to deliver a cost effective and easy to handlesystem having an energy resolution at the level of few eV for X-ray energiesfrom about 2 keV up to tens of keV. There are many applications of the proposedspectrometer, going from fundamental physics (precision measurements of exoticatoms at DA$\Phi$NE collider and J-PARC, precision measurement of the $K^-$mass solving the existing puzzle, quantum mechanics tests) to synchrotronradiation and applications (X-FEL), astronomy, medicine and industry. Here, thebasic concept of such a spectrometer and the first results from a measurementof the characteristic Cu $K_{\alpha 1}$ and $K_{\alpha 2}$ X-ray lines arepresented.