Walter Zinn

Walter Zinn
Born(1906-12-10)December 10, 1906
DiedFebruary 14, 2000(2000-02-14) (aged 93)
CitizenshipCanadian
American
Alma materQueen's University (BA 1927, MA 1930)
Columbia University (Ph.D) (1934)
AwardsAtoms for Peace Award (1960)
Enrico Fermi Award (1969)
Elliott Cresson Medal (1970)
Scientific career
FieldsNuclear physics
InstitutionsUniversity of Chicago Metallurgical Laboratory
Manhattan Project
ThesisTwo-Crystal Study of the Structure and Width of K X-Ray Absorption Limits (1934)

Walter Henry Zinn (December 10, 1906 – February 14, 2000) was a Canadian-born American nuclear physicist who was the first director of the Argonne National Laboratory from 1946 to 1956. He worked at the Manhattan Project's Metallurgical Laboratory during World War II, and supervised the construction of Chicago Pile-1, the world's first nuclear reactor, which went critical on December 2, 1942, at the University of Chicago. At Argonne he designed and built several new reactors, including Experimental Breeder Reactor I, the first nuclear reactor to produce electric power, which went live on December 20, 1951.