Essay: Robert H. Siemann as leader of the Advanced Accelerator Research Department

Eric R. Colby^* and Mark J. Hogan^†
SLAC National Accelerator Laboratory, 2575 Sand Hill Road, MS 07, Menlo Park, California 94025, USA

^*Eric Colby is a staff physicist at the SLAC National Accelerator Laboratory. He earned Sc. B. and M. Sc. degrees in physics from U.C. Davis, in 1989 and 1991, respectively, and a Ph. D. in physics from UCLA in 1997. He worked at Fermilab on the Tesla project, developing an electron source for the superconducting collider. He joined the staff at SLAC in 1998, where he has worked on millimeter-wave power production, high brightness injector physics, and laser-driven acceleration in dielectric structures. He is spokesman of the experiment E-163 to demonstrate laser acceleration techniques, and is head of the Advanced Accelerator Research Department.

^†Mark Hogan is a physicist in the Advanced Accelerator Research Department at the SLAC National Accelerator Laboratory. He earned a B.S. and a Ph.D. in physics from UCLA in 1993 and 1998, respectively. He worked on Self-Amplified Spontaneous Emission free electron laser experiments at UCLA and Los Alamos National Laboratory. He joined the staff at SLAC in 1998 to work on the E-157 beam driven plasma wakefield accelerator experiment at the Final Focus Test Beam facility. He was the spokesperson for the following experiments E-162/E-164/E-167 and is currently working on the FACET project to develop these ideas into a plasma wakefield accelerator based linear collider.