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Steven B. Dierker
Brookhaven National Laboratory

Steven Dierker is the Associate Laboratory Director for the Light Sources Directorate and the Director of the National Synchrotron Light Source II (NSLS-II) Project at Brookhaven National Laboratory (BNL). As NSLS-II Project Director, he has overall line management responsibility and authority for carrying out the NSLS-II Project, including the design, construction, and transition to operations of the NSLS-II facility to ensure all mission requirements are fulfilled in a safe, cost-efficient, and environmentally responsible manner. In addition to the NSLS-II Project, the Light Sources Directorate also includes the National Synchrotron Light Source (NSLS), which reports to Dr. Dierker.

After earning B.S. degrees in both physics and electrical engineering in 1977 from Washington University, Dierker earned both an M.S. and Ph.D. in physics from the University of Illinois, Urbana-Champaign, in 1978 and 1983, respectively. His Ph.D. research involved the first observation of Raman scattering from superconducting gap excitations, which has now become a widespread and powerful technique for investigating the physics of superconductors.

In 1983, he joined the Semiconductor and Chemical Physics Research Department at AT&T Bell Laboratories and carried out research using light scattering and neutron scattering to study problems in soft condensed matter, most notably the hexatic phase of freely suspended liquid crystal films and activated dynamics of binary fluids in porous media.

In 1990, he joined the University of Michigan, where he was Professor of Physics and Applied Physics. At Michigan, he pioneered the development of the new technique of X-ray Photon Correlation Spectroscopy (XPCS) and carried out the first convincing demonstration of the feasibility of this technique in a study of Brownian motion of gold colloids. Dierker has been an active member of the Advanced Photon Source (APS) Users Organization at Argonne National Laboratory, chairing that organization from 1998-2000. He also helped to plan the construction, design and operation of beam lines at the APS, with funding from the U.S. Department of Energy and the National Science Foundation.

In 2001, Dierker joined BNL to become Chair of the NSLS, which has a $36M annual operating budget, a staff of 200, and serves more than 2200 users per year. He became the Associate Laboratory Director for the Light Sources Directorate at BNL when that Directorate was created in 2003. He also continued to serve as the Chair of the NSLS until he stepped down from that position to become the Director of the NSLS-II Project in December, 2005