University Colorado professor and former Fermilab user Uriel Nauenberg died on Dec. 31, 2019, at the age of 81.
After an assistant professorship at Princeton University, he accepted a position as a faculty member in the Physics Department at the University of Colorado Boulder in 1969. Although he officially retired in 2011, after 42 years of service, he remained active in research and teaching until 2015 as an emeritus professor.
Nauenberg chaired the Fermilab User Organization, as well as the user organization at SLAC. He collaborated with Fermilab on several fixed-target experiments in the old Tagged Photon Laboratory and on KTeV.