This page contains archived content on a former member of the Jefferson Lab leadership team.
Dr. Kees de Jager
Former Hall A Leader
Dr. Kees de Jager served as the Hall A leader for Jefferson Lab. He was responsible for leading a team of physicists, engineers, and technicians in the implementation and operation of Hall A and its intricate High-Resolution Spectrometers.
Before joining Jefferson Lab in early 1997, Dr. de Jager was active in physics research for over 30 years in the Netherlands at the National Institute for Nuclear Physics and High Energy Physics (NIKHEF). He began his career there as a research assistant in the electron scattering group, studying the magneto-optical properties of the magic-angle spectrometer. His thesis research focused on a study of dispersive effects in elastic electron scattering. From 1974-1976, Dr. de Jager had responsibility for the operations of NIKHEF's 85 MeV accelerator. In 1976, he took a sabbatical at the Massachusetts Institute of Technology. Upon returning to NIKHEF, he worked on the implementation of the EMIN-hall, particularly the QDD and QDQ spectrometers, and the data-acquisition system. In 1980, Dr. de Jager became the group leader of the single-arm electron scattering group. In 1990, he became the program leader of Internal Target Physics, assuming responsibility for the operations of the Medium Energy Accelerator (MEA), the Amsterdam Pulse Stretcher (AmPS) stretcher/storage ring, and the associated physics program in 1995. One of his main objectives was to store an intense polarized beam in the AmPS ring, which was successfully accomplished in the fall of 1996.
Dr. de Jager received all of his academic degrees (B.S., M.S., and Ph.D.) in physics from the University of Amsterdam. He authored more than 100 refereed scientific papers and served on several committees, including the Nuclear Science Advisory Committee (NSAC) and several of its subcommittees; the Program Advisory Committee for the Mainz Microtron (MAMI) in Germany; and the Program Advisory Committee for the Massachusetts Institute of Technology-Bates facility. He also chaired three international conferences on nuclear and particle physics and served on many conference advisory committees. Dr. de Jager was appointed a Fellow of the American Physical Society in 2001 for his contributions to experimental medium-energy nuclear physics and his lead role in the development of and measurements with an internal target facility using polarized electrons. He retired from Jefferson Lab in April 2012.