Professor of Physics
Prof. Wu is interested in nonlinear dynamics of charged particle beams, coherent radiation sources, and the development of novel accelerators and light sources. One of his research focuses is to study the charged particle nonlinear dynamics using the modern techniques such as Lie Algebra, Differential Algebra, and Frequency Analysis. This direction of research will significantly further the understanding of the nonlinear phenomena in light source storage rings and collider rings, improve their performance, and provide guidance for developing next generation storage rings. The second area of research is to study and develop coherent radiation sources such as broad-band far infrared radiation from dipole magnets and coherent mm-wave radiation from a free-electron-laser (FEL). With this direction of research, he hopes to study the beam stability issues, in particular, the single bunch instabilities in the storage ring, develop diagnostics to monitor and improve the stability of the light source beams, and eventually develop novel means to overcome instabilities. These areas of research will provide foundations for developing a femto-second hard x-ray Compton back scattering radiation source driven by a mm-wave FEL - a next generation light source.
Fransen, C, Pietralla, N, Tonchev, AP, Ahmed, MW, Chen, J, Feldman, G, Kneissl, U, Li, J, Litvinenko, VN, Perdue, B, Pinayev, IV, Pitz, HH, Prior, R, Sabourov, K, Spraker, M, Tornow, W, Weller, HR, Werner, V, Wu, YK, and Yates, SW. "Parity assignments to strong dipole excitations of Zr-92 and Mo-96." PHYSICAL REVIEW C 70.4 (October 2004). Full Text
Ahmed, MW, Feldman, G, Litvinenko, VN, Nelson, SO, Norum, BE, Perdue, B, Pinayev, IV, Sawatzky, B, Tonchev, AP, Wu, Y, and Weller, HR. "Background reduction in FEL-generated γ-ray beam experiments using giant high-peak power pulses." Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 516.2-3 (2004): 440-444. Full Text
Wu, YK, Robin, DS, Forest, E, Schlueter, R, Anders, S, Feng, J, Padmore, H, and Wei, DH. "Design and analysis of beam separator magnets for third generation aberration compensated PEEMs." Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 519.1-2 (2004): 230-241. Full Text
Wu, YK, Forest, E, and Robin, DS. "Explicit symplectic integrator for s-dependent static magnetic field." Physical Review E 68 (October 2003): 046502-. (Academic Article)
Li, J, Wu, YK, and Hartman, S. "Power supply performance monitoring and analysis using operation data." Proceedings of the IEEE Particle Accelerator Conference 4 (2003): 2270-2272.
Wu, YK, Hartman, S, and Mikhailov, SF. "A physics based control system for the Duke storage ring." Proceedings of the IEEE Particle Accelerator Conference 4 (2003): 2482-2484.
Wu, YK, Li, J, Mikhailov, SF, and Litvinenko, V. "Nonlinear dynamics in the Duke storage ring with FEL wigglers." Proceedings of the IEEE Particle Accelerator Conference 1 (2003): 391-393.
Wu, YK, Popov, VG, Hartman, S, Pinayev, I, Mikhailov, SF, Morcombe, P, Oakeley, O, Wallace, P, Wang, P, and Litvinenko, V. "Improving power supply performance for the Duke storage ring." Proceedings of the IEEE Particle Accelerator Conference 2 (2003): 752-754.
Mikhailov, S, Litvinenko, V, Busch, M, Emamian, M, Hartman, S, Pinayev, I, Popov, V, Swift, G, Wallace, P, Wu, Y, Gavrilov, N, Matveev, Y, Shvedov, D, Vinokurov, N, and Vobly, P. "Status of the booster synchrotron for Duke FEL storage ring." Proceedings of the IEEE Particle Accelerator Conference 4 (2003): 2273-2275.
Steier, C, Forest, E, Nadolski, L, Nishimura, H, Robin, D, Wan, W, Wu, Y, and Zholents, A. "Accelerator physics challenges of the fs-slicing upgrade at the ALS." Proceedings of the IEEE Particle Accelerator Conference 1 (2003): 397-399.