Cooper held
postdoctoral positions at
DESY from 1980 to 1982 and SLAC National Accelerator Laboratory from 1982 to 1986, including spokesman of Crystal Ball experiment. She was on the faculty at the
Massachusetts Institute of Technology from 1986 to 1989, starting in near-IR astronomy to look for brown dwarfs as dark matter and was on the staff of the
Max Planck Institute in Munich from 1989 to 1996, including founder and spokesman of the CRESST experiment to search for WIMP dark matter. Cooper was deputy head of
particle physics from 2004 to 2015 and associate chairman of physics at Oxford from 2004 to 2014. She served as a member of the university's governing council from 2005 to 2012. She said that she had multiple inspirations in 19th century German mathematician David Hilbert, also she released a book: "A review of Two Photons Physics". ==References==