Dr. Jaeger is a senior research staff member in the Plasma Theory Section of the Fusion Energy Division at the Oak Ridge National Laboratory (ORNL). He received his Ph. D in Nuclear Engineering from the University of California, Berkeley in 1970, and held postdoctoral fellowships at the National Center for Atmospheric Research, Boulder from 1971-72, and at the Joint Institute for Laboratory Astrophysics, Boulder from 1973-74. He has been at ORNL since 1974. Dr. Jaeger’s research has covered a broad range of topics in plasma theory and computation with applications to fusion plasmas, plasma processing of materials, gas lasers, and space plasmas. Most recently, he has developed tera-scale parallel simulations of radio frequency (RF) interactions in tokamak and stellarator plasmas. These simulations, developed under SciDAC, have become valuable tools for understanding electromagnetic wave propagation and heating in 2-D and 3-D plasmas. The "all-orders spectral algorithm" (AORSA) takes advantage of computational techniques for very large parallel computers to solve the integral form of the wave equation in 2-D and 3-D plasmas without any restriction on wavelength relative to orbit size, and with no limit on the number of cyclotron harmonics. Tera-scale calculations using AORSA have led to progress in several areas of RF wave physics. They have given high-resolution solutions for mode conversion heating and flow drive in 2-D tokamak geometries as well as fully 3-D solutions for ion and electron heating in stellarator plasmas.