ENLIGHT By Christos90 Aug 17, 1890 Discovery of X-rays by Wilhelm Roentgen Discovery of C-rays by Wilhelm Roentgen Jan 1, 1932 First cyclotorn developed by Ernest Lawrence Jan 1, 1946 Proton therapy proposed by Wilson, exploiting the properties of the Bragg peak Jan 1, 1954 Berkeley treats the first patient and begins extensive studies with various ions Jan 1, 1957 First patient treated with protons in Europe at Uppsala Jan 1, 1961 Collaboration between Harvard Cyclotron Laboratory and Massachusetts General Hospital Jan 1, 1993 Patients treated at the first hospital -based facility at Loma Linda Jan 1, 1994 First facility dedicated to carbon ions operational at HIMAC, Japan Aug 1, 1997 First patient treated with carbon ions at GSI Jan 1, 2009 first European proton-carbon ion facility starts treatment in Heidelberg