Today at Berkeley Lab

A Long Journey Home: 11-Inch Cyclotron Returns to Lab After 75 Years

Seventy-five years after one of Ernest Lawrence’s first working cyclotrons was handed to the London Science Museum, it has returned to the Lab. On Jan. 9, 1932, the brass cyclotron — 26 inches from end to end and whose accelerating chamber measures just 11 inches in diameter — was successfully used to boost protons to energies of 1.22 million electron volts. Its return to Berkeley Lab caps a decades-long saga in which various parties endeavored to secure the cyclotron’s return from London, but the persistence of Public Affair’s Pamela Patterson finally paid off. Pictured are physicists Robert Cahn and Natalie Roe. More>