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.
Development of Tunable, Precision Permanent Magnet Phase Shifter for X-Ray FEL awarded by Electron Energy Corporation (Principal Investigator). 2019
Studies of Nuclear Structure Using Neutrons and Charged Particles awarded by Department of Energy (Co Investigator). 1997 to 2019
International Workshop on the Next Generation Gamma-ray Sources awarded by Department of Energy (Co-Principal Investigator). 2015 to 2017
Cross-disciplinary Training in Medical Physics awarded by National Institutes of Health (Mentor). 2007 to 2013
Biomedical and Biological Research Applications of a Storage-Ring Free-Electron Laser awarded by Air Force Office of Scientific Research (Co-Principal Investigator). 2000 to 2008
Novel Research Opportunities Using the Duke Storage-Ring FEL awarded by Air Force Office of Scientific Research (Co-Principal Investigator). 2004 to 2006
3D Magnetic Field Effects on the Beam Dynamics in the Next Generation High Energy Physics Accelerator awarded by Department of Energy (Principal Investigator). 2001 to 2003
Liu, P., et al. “Phase retrieval for short wavelength orbital angular momentum beams using knife-edge diffraction.” Optics Communications, vol. 474, Nov. 2020. Scopus, doi:10.1016/j.optcom.2020.126077. Full Text
Yan, J., et al. “Polarization control of a free-electron laser oscillator using helical undulators of opposite helicities.” Physical Review Accelerators and Beams, vol. 23, no. 6, June 2020. Scopus, doi:10.1103/PhysRevAccelBeams.23.060702. Full Text
Li, X., et al. “Compton scattering from He 4 at the TUNL HIγ S facility.” Physical Review C, vol. 101, no. 3, Mar. 2020. Scopus, doi:10.1103/PhysRevC.101.034618. Full Text Open Access Copy
Gai, M., et al. “Time Projection Chamber (TPC) detectors for nuclear astrophysics studies with gamma beams.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 954, Feb. 2020. Scopus, doi:10.1016/j.nima.2019.01.006. Full Text
Yan, J., et al. “Precision control of gamma-ray polarization using a crossed helical undulator free-electron laser.” Nature Photonics, vol. 13, no. 9, Sept. 2019, pp. 629–35. Scopus, doi:10.1038/s41566-019-0467-6. Full Text
Pan, Z., et al. “Design and dynamic studies for a compact storage ring to generate gamma-ray light source based on Compton backscattering technique.” Physical Review Accelerators and Beams, vol. 22, no. 4, Apr. 2019. Scopus, doi:10.1103/PhysRevAccelBeams.22.040702. Full Text
Li, B., et al. “Transverse beam profile measurement system for the Duke storage ring.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 911, Dec. 2018, pp. 45–50. Scopus, doi:10.1016/j.nima.2018.09.102. Full Text
Li, W., et al. “Compensation for booster leakage field in the Duke storage ring.” Chinese Physics C, vol. 41, no. 1, Jan. 2017. Scopus, doi:10.1088/1674-1137/41/1/017002. Full Text
Li, W., et al. “Study of magnetic hysteresis effects in a storage ring using precision tune measurement.” Chinese Physics C, vol. 40, no. 12, Dec. 2016. Scopus, doi:10.1088/1674-1137/40/12/127002. Full Text
Płaczek, W., et al. “Gamma factory at CERN - Novel research tools made of light.” Acta Physica Polonica B, vol. 50, no. 6, 2019, pp. 1191–203. Scopus, doi:10.5506/APhysPolB.50.1191. Full Text
Yan, J., et al. “Polarization control of storage ring FELs using cross polarized helical undulators.” Proceedings of the 38th International Free Electron Laser Conference, Fel 2017, 2017, pp. 235–39. Scopus, doi:10.18429/JACoW-FEL2017-TUC01. Full Text
Li, W., et al. “Direct and high resolution beta-function measurements for storage ring lattice characterization.” Ipac 2016 Proceedings of the 7th International Particle Accelerator Conference, 2016, pp. 3272–74.
Li, W., et al. “Measuring Duke storage ring lattice using tune based technique.” 6th International Particle Accelerator Conference, Ipac 2015, 2015, pp. 293–96.
Wu, Y. K. “Light source and accelerator physics research program at Duke university.” 6th International Particle Accelerator Conference, Ipac 2015, 2015, pp. 1866–68.
Mikhailov, S. F., et al. “Developing an improved pulsed mode operation for Duke storage ring based FEL.” 6th International Particle Accelerator Conference, Ipac 2015, 2015, pp. 1860–62.
Wallace, P. W., et al. “Extending ok5 wiggler operational limit at duke fel/higs facility.” 6th International Particle Accelerator Conference, Ipac 2015, 2015, pp. 1863–65.
Yan, J., et al. “Experimental study of a two-color storage ring FEL ?” 6th International Particle Accelerator Conference, Ipac 2015, 2015, pp. 1198–200.
Hao, H., et al. “Characterizing betatron tune knobs at Duke storage ring.” 6th International Particle Accelerator Conference, Ipac 2015, 2015, pp. 672–74.
MacDowell, A. A., et al. “Progress on PEEM3 - An aberration corrected X-ray photoemission electron microscope at the ALS.” Aip Conference Proceedings, vol. 879, 2007, pp. 1341–44. Scopus, doi:10.1063/1.2436312. Full Text
HIGS: Free-Electron Laser Based Compton Gamma-Ray Source. An invited talk on December 14, 2015 at a workshop “International Meeting on Laser-Driven Radiation Sources for Nuclear Applications”. George Washington University. December 14, 2015
Next Generation Laser-Compton Gamma-ray Beam Facilities. An invited talk at “Applications of Nuclear Reactions with Gamma-rays and Surrogates for Neutrons” workshop. 4th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society ...