R. Lawrence Ives, Ph.D. Dr. Ives received his Ph.D. from N.C. State University in plasma physics and began his microwave career in the Gyrotron Department at Varian Associates, Inc. in Palo Alto, CA. In that position he was responsible for designing electron guns, gyrotron circuits, collectors, and waveguide components. Gyrotrons are high power, high frequency microwave and millimeter wave RF sources used for fusion research and industrial heating. Dr. Ives founded Calabazas Creek Research, Inc., which is involved in development of high power RF sources and components. The company is also a major developer of advanced design codes for sources and components. Dr. Ives was principle investigator in programs for numerous devices, including a 1 MW CW waterload for Gaussian mode gyrotrons, a multi-stage depressed collector for gyrotrons, improved magnetron injection guns, multiple beam devices (klystrons and inductive output tubes), field emission cathodes, terahertz RF sources, and advanced cathodes for high current density, long life applications. He specializes in microfabrication and computer optimization for advanced 3D devices. Dr. Ives is president of the corporation and responsible for technical direction and coordination with customers and strategic partners.

Patents Mode Suppressor for Whispering Gallery Gyrotron, No. 4,851,788, July 1989 Couplers for Extracting RF Power from a Gyrotron Cavity Directly Into Fundamental Mode Waveguide, No. 5,015,915, May 1991 Collector RF Loss Structures for Gyrotrons Employing Transverse Power Extraction, European Patent No. 90308395.4-, July 1990 Multi-Stage Depressed Collector for Small Orbit Gyrotrons, Patent No. 5780970, July 1998 High Power Water Load for Microwave and Millimeter-Wave Radio Frequency Sources, U.S. Patent No. 5,949,298. Depressed Collectors for Sheet Beam Electron Guns. U.S. Patent No. 6,838,829, January 2005. Multiple Beam Electron Guns, U.S. Patent No. 6,768,265, July 2004. Multiple Beam Electron Guns, U.S. Patent No. 6,847,168, January 2005. Power Combiner and Splitter, U.S. Patent No. 7,102,459, September 2006. Power Combiner and Splitter, U.S. Patent No. 6,919,776, July 2005. Sintered Wire Anode, U.S. Patent No. 7,313,226, December 2007.

Technical Publications (Partial Listing) R. Lawrence Ives, Adam Attarian, Thuc, Bui, Michael Read, John David, Hien Tran, William J. Tallis, Steven Davis, Sean E. Gadson, Noah Blach, David Brown, and Erin Kiley, “Computational Design of Asymmetrical Electron Beam Devices,” IEEE Trans. Electron Devices, Vol. 56, No. 5, pp. 753-761, May 2009. R.L. Ives, L.R. Falce, S. Schwartzkopf, and R. Witherspoon, “Controlled Porosity Cathodes from Sintered Tungsten Wires, IEEE Trans. On Electron Devices, Vol. 52, No. 12, pp. 2800-2805 (December 2005). R.L. Ives, P. Borchard, G. Collins, M. Curtis, M. Falce, K. Gunther, G. Miram, D. Marsden, R. Wilcox, “Improved Magnetron Injection Guns for Gyrotrons,” IEEE Transactions on Plasma Science, Vol. 36, Issue 3, Part 1, pp. 620-630 (June 2008). R. Lawrence Ives, Amarjit Singh, Max Mizuhara, Richard Schumacher, Jeff Neilson, Marcel Gadreau, Jeffrey Casey, and Victor Granatstein, “Design of a Multistage Depressed Collector System for 1 MW CW Gyrotrons-Part II: System Considerations,” Invited Paper, IEEE Transactions on Plasma Science, Vol. 27, No. 2, pp 503-511 (April 1999). R. Lawrence Ives, Carol Kory, Michael Read, Jeff Neilson, Malcolm Caplan, Nikolai Chubun, Steve Schwartzkopf, Ron Witherspoon, "Development of backward-wave oscillators for terahertz applications," Terahertz for Military and Security Applications, Orlando, FL, April 2003 (Invited paper). R.L. Ives, M. Mizuhara, S. Schumacher, R. Pendleton, “Development of a high power CW waterload for Gaussian mode gyrotrons,” IEEE Transactions on Plasma Science, Vol. 27, Issue 2, pp. 531-537 (April 1999). R.L. Ives, "Microfabrication of high-frequency vacuum electron devices," IEEE Transactions on Plasma Science, Part 1, Vol. 32 Issue 3, pp. 1277-1291 (June 2004). John A. David, Carol L. Kory, Hien T. Tran, Lawrence R. Ives, David Chernin, "Enhanced Features for Design of Traveling Wave Tubes Using CHRISTINE-1D," IEEE Transactions on Plasma Science, Vol. 35 Issue 4, Part 3, pp. 1056-1064 (August 2007). John A. David, R. Lawrence Ives, Hien Tran, Thuc Bui, Michael E. Read, "Computer Optimized Design of Electron Guns," IEEE Transactions on Plasma Science, Vol. 36 Issue 1, pp. 156-168 (February 2008). Brian M. Lewis, Hien T. Tran, Michael E. Read, R. Lawrence Ives, "Design of an Electron Gun Using Computer Optimization," IEEE Transactions on Plasma Science, Part 1, Vol. 32 Issue 3, pp. 1242-1250 (June 2004). W. Lawson, R.L. Ives, M. Read, M. Mizuhara and J.M. Neilson, "18. “Design of a 10-MW, 91.4-GHz frequency-doubling gyroklystron for advanced accelerator applications,” IEEE Transactions on Plasma Science, Vol. 29 Issue 3, pp. 545-558 (Jun. 2001). "MEMS and FEAs for HF TWTs and BWOs," Lawrence Ives, Tri-Services Vacuum Electron Devices Workshop, Norfolk, VA., April 2003. R.L. Ives, Thuc Bui, A. Attarian, S. Davis, S. Gadson, W. Tallis, Hien Tran, M. Read, M. Posth, "Implementation of computer optimization for design of electron gun," 33rd International Conference on Infrared, Millimeter and Terahertz Waves, September 2008. R.L. Ives, Thuc Bui, M. Read, J. David, A. Attarian, H. Tran, "Computer optimized design of electron guns," IEEE International Vacuum Electronics Conference, pp. 453-454, April 2008. R.L. Ives, G. Collins, P. Borchard, "Magnetron injection gun measurements," 33rd International Conference on Infrared, Millimeter and Terahertz Waves, September 2008. R.L Ives, L. Falce, G. Miram, G. Collins, M. Curtis, K. Gunther, S. Schwartzkopf, "Advanced cathode research," 33rd International Conference on Infrared, Millimeter and Terahertz Waves, September 2008.

Ives | Neilson | Read | Kory | Miram | Bui | Mizuhara | Marsden | Collins | Song

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