George C Ho¹, Glenn M Mason¹, Robert F Wimmer-Schweingruber², Javier Rodriguez-Pacheco³ and EPD Team, (1)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (2)University of Kiel, Institute for Experimental and Applied Physics, Kiel, Germany, (3)University of Alcala, Alcala de Henares, Spain