主讲人简介：
Professor Warren B. Mori received his BS from UC Berkeley in 1981, and his M.S. and Ph.D. from UCLA in 1984 and 1987, respectively. He has been on the research and regular faculty of the Physics and Astronomy and of the Electrical Engineering Departments at UCLA since 1987. Starting in 1999 he has been a full professor in both departments. Since the fall of 2006 he has been the Director of the UCLA Institute for Digital Research and Education.
His current research interests are in plasma physics, laser and beam plasma interactions, plasma based accelerators and light sources, inertial confinement fusion, high energy density science, relativistic shocks, and high performance computing. He has pioneered the use of particle-in-cell methods for modeling laser and wakefield accelerators. He has made seminal contributions on the acceleration of charged particles in nonlinear plasma waves, on the excitation of relativistic plasma waves by lasers and particles beams, and on the stability of lasers and particle beams as they propagate through tenuous plasmas. He has also made significant contributions on the fast ignition scheme for inertial confinement fusion and on the role of the Weibel instability in relativistic shocks.
Prof. Mori holds the patents for the method for upshifting light frequency by rapid plasma creation, and for the use of relativistic ionization fronts for tunable radiation. He was awarded the International Center for Theoretical Physics Medal for Excellence in Nonlinear Plasma Physics by a Young Researcher in 1995, and in 1997 he was elected a Fellow of the American Physical Society for his "outstanding contributions to particle simulations of complex laser-plasma phenomena and of plasma based light sources". He was elected a Fellow of IEEE in 2006 for his work in plasma science. He is the co-author of over 250 articles including over 50 in Physical Review Letters and 4 in Nature. He has advised fifteen graduate students including two recipients of APS best thesis prizes, two recipients of the John Dawson Best Thesis Prize on plasma based acceleration, and mentored 7 post doctoral researchers.
报告摘要：
Computer simulations have played a critical role in the development of plasma based acceleration. In plasma based acceleration the space charge or radiation pressure of an intense particle beam or laser pulse creates a plasma wave wake with a phase velocity near the speed of light. Charged particles then surf on this wake to ultra-high energies in very short distances. Due to the nonlinear nature of the physics particle-in-cell (PIC) simulations have been used from the start. In the PIC method the trajectories of individual particles are followed self-consistently in response to the electric and magnetic fields that their charge and current densities generate. In the seminal Tajima and Dawson paper in 1979 simulations using standard PIC codes in one dimension were used to verify simple theories. In the mid 1980’s two-dimensional simulations on the world’s fastest computers were then used to elucidate important physics. Today the full time and space scales of ongoing and future experiments can be modeled in three-dimensions. This possibility is due to advances in computer hardware as well as advances in algorithms and physics understanding. Several of these advances were due to talented graduate students from Tsinghua University. Today I will describe these advances as well as what modern computer simulations tell us about the future of plasma based acceleration. |
