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.
Wu, Y. K., et al. “Widely Tunable Two-Color Free-Electron Laser on a Storage Ring.” Physical Review Letters, vol. 115, no. 18, Oct. 2015, p. 184801. Epmc, doi:10.1103/physrevlett.115.184801. Full Text
Weller, H. R., et al. “Nuclear Physics Research at the High Intensity Gamma-Ray Source (HIγS).” Nuclear Physics News, vol. 25, no. 3, Jan. 2015, pp. 19–24. Scopus, doi:10.1080/10619127.2015.1035932. Full Text
Laskaris, G., et al. “Spin-dependent cross sections from the three-body photodisintegration of He 3 at incident energies of 12.8 and 14.7 MeV.” Physical Review C Nuclear Physics, vol. 89, no. 2, Feb. 2014. Scopus, doi:10.1103/PhysRevC.89.024002. Full Text
Huang, S., et al. “Relative spectral response measurement of spectrometers using undulator radiation.” Journal of Instrumentation, vol. 9, no. 3, Jan. 2014. Scopus, doi:10.1088/1748-0221/9/03/P03002. Full Text
Xu, W., et al. “Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current.” Chinese Physics C, vol. 38, no. 10, Jan. 2014. Scopus, doi:10.1088/1674-1137/38/10/107003. Full Text
Leviner, L. E., et al. “A segmented, enriched N-type germanium detector for neutrinoless double beta-decay experiments.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 735, Jan. 2014, pp. 66–77. Scopus, doi:10.1016/j.nima.2013.08.081. Full Text Open Access Copy
Wu, Y. K., et al. “Commissioning and operation of wiggler switchyard system for duke FEL and HIGS.” Ipac 2013: Proceedings of the 4th International Particle Accelerator Conference, Dec. 2013, pp. 267–69.
Li, J. Y., et al. “Compensation schemes for operation of FEL wigglers on duke storage ring.” Ipac 2013: Proceedings of the 4th International Particle Accelerator Conference, Dec. 2013, pp. 3270–72.
Mikhailov, S. F., et al. “Protection of VUV FEL mirrors using soft orbit bump at duke FEL / HIγS facility.” Ipac 2013: Proceedings of the 4th International Particle Accelerator Conference, Dec. 2013, pp. 1301–03.
Hao, H., et al. “Design of a soft orbit bump for FEL mirror protection at duke FEL/HIGS facility.” Ipac 2013: Proceedings of the 4th International Particle Accelerator Conference, Dec. 2013, pp. 2006–08.
Feng, J., et al. “An Aberration Corrected Photoemission Electron Microscope at the Advanced Light Source.” Aip Conference Proceedings, vol. 705, 2004, pp. 1070–73. Scopus, doi:10.1063/1.1757983. Full Text
Pinayev, I. V., et al. System for the control and stabilizing of OK-4/Duke FEL optical cavity. AIP, 1998. Crossref, doi:10.1063/1.57040. Full Text
Burnham, B., et al. “Microbunching in storage ring.” Micro Bunches Workshop, edited by E. B. Blum et al., no. 367, AIP PRESS, 1996, pp. 215–24.
Overview of High Intensity Gamma-ray Source -- Capabilities and Future Upgrades. An invited talk at 2013 International Workshop on Polarized Sources, Targets and Polarimetry (PSTP2013). University of Virginia. September 10, 2013
Research and Development Program of Polarized, High Intensity Compton $\gamma$-ray Sources at Duke University. An invited talk at Hefei Light Source, University of Science and Technology of China. May 21, 2013