The 60-inch cyclotron at the U of California's Lawrence Radiation Lab soon after its completion in mid-1939.Key figures in the development of the cyclotron. Left to right: Dr. Luis W. Alvarez, Dr. W.D. Coolidge, William Brobeck, Dr. Donald Cooksey, Dr Edwin McMillan, and E.O. Lawrence.
CyclotronLawrence1939radiation labCaliforniaUniversity of California