Argonne Accelerator Institute Members

John W. Lewellen J.W. Lewellen
Phone: (630) 252-5252
E-mail address: lewellen@aps.anl.gov
Division and group: AST-ONR and Adjunct Professor/Joint Appointment, Northern Illinois University

Areas of Research Interest

High-brightness beam source design and operation;  high-power, high-brightness beam transport, diagnosis and control;  free-electron lasers of various provenance;  novel electron beam sources.

Selected List of Publications

J.W. Lewellen and J. Noonan, “Planar-Focusing Cathodes,” Proceedings of the 27th International Free-Electron Laser Conference, SLAC (2005), 612-615.  (Published in Nucl. Instr. Methods A.)

J.W. Lewellen and J. Noonan, “Field-emission cathode gating for RF electron guns,” Physical Review Special Topics – Accelerators and Beams (March 2005).

J.W. Lewellen et.al., “Measurements of a Higher-Order Mode Vacuum Photoinjector Cold Test Cell,” ICFA Beam Dynamics Newsletter #32, pp. 104-114 (December 2003).

D. Dowell et.al., “A two-frequency RF photocathode gun,” Proceedings of the 2003 Free-Electron Laser conference (September 2003).  (Published in Nucl. Instr. Methods A.)

G.K. Shenoy et.al., “Variable-period undulators as synchrotron radiation sources,” Journal of Synchrotron Radiation, 10, pt. 3, pp. 205-213 (May 2003)

J.W. Lewellen and C.A. Brau, “RF Photoelectric Injectors Using Needle Cathodes,” Nucl. Instr. Meth. “A”, 507, 1-2. pp. 323-326 (2003).