University of Maryland Institute for Research in Electronics and Applied Physics Group Members Publications Visitor Information Research
Institute for Research in Electronics and Applied Physics

Free Electron Laser Group

Publications

Refereed Journals • Conference Proceedings

Publications in Refereed Journals

  1. K. Tian, R. A. Kishek, P. G. O'Shea, R. B. Fiorito, D. W. Feldman, and M. Reiser, "Time-Dependent Imaging of Space-Charge Dominated Electron Beams," Phys. Plasmas 15, 056707 (2008).

  2. A. G. Shkvarunets and R. B. Fiorito, "Vector Electromagnetic Theory of Transition and Diffraction Radiation with Application to Longitudinal Bunch Size," Phys. Rev. ST Accel. Beams 11, 012801 (2008).

  3. K. L. Jensen, P. G. O'Shea, D. W. Feldman, and N. A. Moody, "Theoretical Model of the Intrinsic Emittance of a Photocathode," Appl. Phys. Lett. 89, 224103 (2006).

  4. J. R. Harris and P. G. O'Shea, "Gridded Electron Guns and Modulation of Intense Beams," IEEE Trans. Electron Devices 53 (11), 2824-2829 (2006).

  5. Kevin L. Jensen, Donald W. Feldman, Nathan A. Moody, and Patrick G. O'Shea, "A Photoemission Model for Low Work Function Coated Metal Surfaces and Its Experimental Validation," J. Appl. Phys. 99, 124905 (2006).

  6. Kevin L. Jensen, Donald W. Feldman, Nathan A. Moody, and Patrick G. O'Shea, "Field-Enhanced Photoemission from Metals and Coated Materials," J. Vac. Sci. Technol. B 863, (2006).

  7. J. R. Harris, J. G. Neumann, and P. G. O'Shea, "Governing Factors for Production of Photoemission-Modulated Electron Beams," J. Appl. Phys. 99, 093306 (2006).

  8. R. B. Fiorito, A. G. Shkvarunets, T. Watanabe, V. Yakimenko, and D. Snyder, "Interference of Diffraction and Transition Radiation and Its Application as a Beam Divergence Diagnostic," Phys. Rev. ST Accel. Beams 9, 052802 (2006).

  9. H. P. Freund, P. G. O'Shea, S. Biedron, "Nonlinear Harmonic Generation in Free Electron Lasers with Helical Wigglers," Phys. Rev. Lett. 94, 074802 (2005).

  10. J. G. Neumann, J. R. Harris, B. Quinn, and P. G. O'Shea, "Production of Photoemission-Modulated Beams in a Thermionic Electron Gun," Rev. Sci. Instrum. 76, 033303 (2005). Also reprinted in the Virtual Journal of Ultrafast Science 4 (4), April 2005.

  11. K. L. Jensen, D. W. Feldman, and P. G. O'Shea, "Time Dependent Models of Field-Assisted Photoemission," J. Vac. Sci. Tech. B 23 (2), 621-631 (2005).

  12. K. L. Jensen, D. W. Feldman, and P. G. O'Shea, "The Quantum Efficiency of Dispenser Photocathodes: Comparison of Theory to Experiment,"Appl. Phys. Lett. 85, 5448 (2004).

  13. H. P. Freund, P. G. O'Shea, and S. G. Biedron, "Nonlinear Harmonic Generation in Free-Electron Laser Oscillators," Nucl. Instrum. Methods A 528, 44 (2004).

  14. Ralph Fiorito and Lev Titarchuk, "Is M82 X-1 Really an Intermediate-Mass Black Hole? X Spectral and Timing Evidence," Astrophys. J. Lett. 614, L113 (2004).

  15. Lev Titarchuk and Ralph Fiorito, "Spectral Index and QPO Frequency Correlation in Black Hole Sources, Observational Evidence of Phases and Phase Transitions in Black Holes," Astrophys. J. 612, 988 (2004).

  16. K. L. Jensen, D. W. Feldman, P. G. O'Shea, "Advanced Photocathode Simulation and Theory," Nucl. Instrum. Methods A 507, 238 (2003).

  17. A. G. Shkvarunets, R. B. Fiorito, and P. G. O'Shea, "Optical Diffraction-Transition Radiation Interferometry and Its Application to the Measurement of Beam Divergence," Nucl. Instrum. Methods B 201 (1), 153-160 (2003).

  18. K. L. Jensen, D. W. Feldman, M. Virgo, and P. G. O'Shea, "Infrared Photoelectron Emission from Scandate Dispenser Cathodes," Appl. Phys. Lett. 83, 1269-1271 (2003).

  19. J. G. Neumann, P. G. O'Shea, D. Demske, W. S. Graves, B. Sheehy, H. Loos, G. L. Carr, "Electron Beam Modulation Using a Laser-Driven Photocathode," Nucl. Instrum. Methods A 507, 498 (2003).

  20. H. P. Freund, D. Douglas, and P. G. O'Shea, "Multiple-Beam Free-Electron Lasers," Nucl. Instrum. Methods A 507, 373 (2003).

  21. H. P. Freund, P. G. O'Shea, and J. Neumann, "Simulation of Prebunching in Free-Electron Lasers," Nucl. Instrum. Methods A 507, 400 (2003).

  22. H. P. Freund and P. G. O'Shea, "A Polychromatic FEL Light Source Using a Single Electron Beam and Multipile Wigglers," Nucl. Instrum. Methods A 483, 449-454 (2002).

  23. Agust Valfells, D. W. Feldman, M. Virgo, P. G. O'Shea, and Y. Y. Lau, "Effects of Pulse-Length and Emitter Area on Virtual Cathode Formation in Electron Guns," Phys. Plasmas 9, 2377 (2002).

  24. K. L. Jensen, P. G. O'Shea, and D. W. Feldman, "Generalized Electron Emission Model for Field, Thermal, and Photoemission," Appl. Phys. Lett. 81, 3867-3869 (2002).

  25. P. O'Shea and H. Freund, "Free-Electron Lasers: Status and Applications," Science 292, 1853-1858 (2001).

  26. M. A. Piestrup, X. Wu, V. Kaplin, S. Uglov, J. Cremer, D. W. Rule, and R. B. Fiorito, "A Design of Mammography Units Using a Quasimonochromatic X-ray Source," Rev. Sci. Instrum. 72, 2159 (2001).

  27. R. B. Fiorito and D. W. Rule, "Diffraction Radiation Diagnostics for Moderate to High Energy Charged Particle Beams," Nucl. Instrum. Meth. B 173, 67-82 (2001).

  28. A. V. Shchagin, N. A. Khizhnyak, R. B. Fiorito, D. W. Rule, and X. Artru, "Parametric X-ray Radiation for Calibration of X-ray Space Telescopes and Generation of Several X-ray Beams," Nucl. Instrum. Meth. B 173, 154-159 (2001).

  29. H. P. Freund and P. G. O'Shea, "Two-Color Operation in High-Gain Free-Electron Lasers," Phys. Rev. Lett. 84, 2861 (2000).

Publications in Conference Proceedings

  1. R. B. Fiorito, "Recent Advances in OTR Beam Diagnostics," Proceedings of PAC09, Vancouver, BC, May 3-8, 2009.

  2. J. R. Harris, R. B. Feldman, and P. G. O'Shea, "Transverse-Longitudinal Coupling in an Intense Electron Beam," Proceedings of the 2007 IEEE Particle Accelerator Conference, Albuquerque, NM, ed. C. Petit-Jean-Genaz, IEEE Cat. No. 07CH37866, 3597 (2007).

  3. R. Fiorito, A. Shkvarunets, T. Watanabe, V. Yakimenko, and D. Snyder, "Advances in Optical Transition and Diffraction Radiation Emittance Diagnostics," Proceedings of Particle Accelerator Conference 2005, Knoxville, TN, May 16-20, 2005.

  4. J. G. Neumann, R. B. Fiorito, P. G. O'Shea, G. L. Carr, T. V. Shaftan, B. Sheehy, Y. Shen, Z. Wu, W. Graves, and H. Loos, "Simulations and Experiments of Electron Beams Pre-Modulated at the Photocathode," Proceedings of Particle Accelerator Conference 2005, Knoxville, TN, May 16-20, 2005.

  5. D. A. Dimitrov, D. L. Bruhwiler, J. R. Cary, P. Messmer, P. Stoltz, K. L. Jensen, D. W. Feldman, and P. G. O'Shea, "Development of Advanced Models for 3D Photocathode PIC Simulations," Proceedings of Particle Accelerator Conference 2005, Knoxville, TN, May 16-20, 2005.

  6. N. Moody, D. W. Feldman, P. G. O'Shea, and K. L. Jensen, "Fabrication and Measurement of Low Work Function Cesiated Dispenser Photocathodes," Proceedings of the Particle Accelerator Conference 2005, 2953-2955 (2005).

  7. D. W. Feldman, M. Virgo, P. G. O'Shea, and K. L. Jensen, "Development of Dispenser Cathodes for RF Photoinjectors," Proceedings of the 2003 IEEE Particle Accelerator Conference, Portland, OR, edited by J. Chew, P. Lucas, and S. Webber, IEEE Cat. No. 03CH37423C, 3323 (2004).

  8. J. Neumann, D. Demske, R. B. Fiorito, P. O'Shea, G. L. Carr, H. Loos, B. Sheehy, and X. Wang, "Study of Coherent Radiation from an Electron Beam Pre-bunched at the Photocathode," Proceedings of the 2003 IEEE Particle Accelerator Conference, Portland, OR, edited by J. Chew, P. Lucas and S. Webber, IEEE Cat. No. 03CH37423C, 1497 (2004).

  9. A. G. Shkvarunets and R. B. Fiorito, "Optical Edge Radiation Diagnostics for Relativistic Electron Beams," in AIP Conference Proceedings 732, Eleventh Beam Instrumentation Workshop, T. Shea and R. Shipley eds., p. 429-436 (2004).

  10. J. Neumann, R. Fiorito, H. Freund, P. O'Shea, G. L. Carr, H. Loos, T. Shaftan, B. Sheehy, Y. Shen, Z. Wu, "Generation of TeraHertz Radiation by Modulating the Electron Beam at the Photocathode," Proceedings of FEL Conference, Trieste, IT, September, 2004.

  11. R. B. Fiorito, J. Neumann, H. Freund, P. G. O'Shea, H. Loos, B. Sheehy, L. Carr, W. Graves, "Coherent TeraHertz Radiation from Optically Prebunched Electron Beams," in Conf. Digest of IRMMW04/THz, Karlslruhe, Germany, Sept. 20-October 1, 2004.

  12. Ralph Fiorito and Lev Titarchuk, "Correlations of Spectral and QPO Features in Black Hole Candidate Sources," in Proceedings of Supermassive, Intermediate Mass and Solar Mass Black Holes Conference, Mineshige ed., Kyoto, Japan, Oct. 13-17, 2003, published in Progress in Theoretical Physics, Supplemental, 2004, vol. 155, p. 325-326 (2004).

  13. R. B. Fiorito, A.G. Shkvarunets, and P.G. O'Shea, "Measurement of Electron Beam Divergence Using OTR-ODR Interferometry," Proceedings of Particle Accelerator Conference 2003, Portland, OR, May 11-16, 2003.

  14. R. B. Fiorito and A.G. Shkvarunets, "Use of Optical Transition Radiation Interferometry for Energy Spread and Divergence Measurements," Proceedings of DIPAC '03, Mainz, Germany, May 4-6, 2003.

  15. R. B. Fiorito, "Optical Transition Radiation and Diffraction Radiation Diagnostics for Relativisitc Electron Beams," in Electrons and Photon Interaction in Dense Media, Proceedings of the NATO Advanced Research Workshop, Nord Amberg, Armenia, H. Wiedemann, ed., NATO Science Series II. Mathematics, Physics and Chemistry, Vol. 49, Kluwer Academic Publishers, Dordrecht, NE (2002).

  16. R. B. Fiorito, "Recent Advances in Beam Diagnostic Techniques," in Proceedings of the Advanced Accelerator Concepts Workshop, Mandalay Bay, CA., June 23-29, 2002, P. Muggli and C. Clayton eds., AIP Conference Proceedings, AIP, NY (2002).

  17. R. B. Fiorito, A. G. Shkvarunets, and P. G. O'Shea, "Optical Method for Mapping the Transverse Phase Space of a Charged Particle Beam," p. 187-194, Conference Proceedings 648, Beam Instrumentation Workshop 2002, ed. G. A. Smith and T. Russo, AIP (2002).

  18. Donald Feldman, et al., "Combined Thermionic and Photoelectric Emission From Dispenser Cathodes," Proceedings of the 2001 Particle Accelerator Conference.

  19. Nathan Neumann, et al., "Beam Line Design at the Maryland Infrared Free Electron Laser," Proceedings of the 2001 Particle Accelerator Conference.

  20. Anatoly Shkvarunets, et al., "The Application of OTR-ODR Interferometry to the Measurement of the Divergence of Low Energy Electron Beams," Proceedings of the 2001 Particle Accelerator Conference.

  21. Patrick O'Shea, et al., "The University of Maryland Free Electron Laser," Proceedings of the 22nd Annual FEL Conference. (Link to longer version, which will not be published)

IREAP Homepage • FEL Homepage

June 9, 2009