"But Kaminski found that the main source for the KBBF crystals--China--had embargoed their export. However, he found a research group at Clemson University that was able to grow him the crystal he needed." this means ...Proton-Synchrotron...which means antimatter weapon

http://www.laserfocusworld.com/articles/2015/08/home-grown-arpes-spectroscopy-system-substitutes-for-synchrotron-light-source.html