Massachusetts Institute of Technology
"For outstanding contributions to fundamental theory, experimental interpretation and engineering design in fusion research. Among his theoretical discoveries are the ion mixing, impurity gradient, and ubiquitous modes and his work on m=1 tearing has recently been extended to explain anomalous loss of fast particles. His experimental interpretations include confinement scalings, slideaway electrons, detailed transport laws, and the principle of profile consistency. He has pioneered in the conceptual and engineering design of high field tokamaks, many of which now operate successfully, and which serve as the basis for proposals for low cost fusion ignition devices such as Ignitor"