Caption:
Wide-angle view of the remodeled Bevatron shows extensive new shielding, including seven-foot-thick concrete roof and "igloo" at hub. Taking in the view from the top are Lawrence Radiation Laboratory Director Edwin McMillan (left) and Bevatron Group Leader Edwin Lofgren. The Bevatron was a particle accelerator (specifically, a weak-focusing proton synchrotron) at Lawrence Berkeley National Laboratory, which began operating in 1954. The antiproton was discovered there in 1955, resulting in the 1959 Nobel Prize in physics for Emilio Segrè and Owen Chamberlain. Edwin Mattison McMillan (September 18, 1907 - September 7, 1991) was an American physicist and Nobel laureate credited with being the first ever to produce a transuranium element. He shared the Nobel Prize in Chemistry with Glenn Seaborg in 1951. Edward Joseph Lofgren (born January 18, 1914) was an American physicist in the early days of nuclear physics and elementary particle research at the Lawrence Berkeley Laboratory (LBL). He was born in Chicago. He was an important figure in the breakthroughs that followed the creation of the Bevatron, of which he was the director for a time. He remained at the Laboratory until his retirement in 1982. He turned 100 in January 2014.