CCR Logo

Calabazas Creek Research, Inc.

CCR
About CCR

About CCR
Personnel
Facilities
Research Programs
Products
Services CCR Offers
Contact CCR
Home Page
Dr. Jeff M. Neilson Jeff M. Neilson, Ph.D.
Jeff M. Neilson (M' IEEE since 1986) received the B.S. degree in engineering from California Polytechnic University, Pomona, and the Ph.D. degree from the University of Utah, Salt Lake City in 1982 and 1993 respectively. His Ph.D. dissertation was on the design of a 110 GHz 1 MW CW radially extracted gyrotron.

Dr. Neilson has been at CCR since September 1998. He has been responsible for doing contract R&D in electromagnetics, high-power microwave components and microwave tubes. Dr. Neilson was the principle investigator on development of a 10 MW gyroklystron funded by the U.S. Department of Energy for W-Band accelerator research and on the development of an advanced surface integral formulation of the RF launcher and mirror systems for quasioptical gyrotrons. Dr. Neilson is the principle author of an advanced scattering matrix code (CASCADE) that is widely used by the microwave tube industry for design of waveguide components and RF windows. He developed a surface integral formulation of quasioptical RF launcher for high power gyro-trons and the code he authored to implement that formulation is used by gyrotron developers in the US (CPI), Germany (FZK) and Japan (JAERI) and at and several US universities (MIT and UW). He has designed mode converters, waveguide tapers, and RF windows for applications in high energy accelerators systems, high power HPM systems, and RADAR systems.

Prior to his employment at CCR, Dr. Neilson worked in the gyrotron department at Varian Associates (Palo Alto, CA, now CPI) and at Vista Research (Mountain View, CA). While at Varian Associates he was responsible for the design of electron guns, circuits, windows, beam tapers, collectors, mode converters, and quasi- optical waveguide components. While at Varian, Dr. Neilson authored many computer programs used for designing microwave and millimeter wave components, including overmoded waveguide devices, gyrotron circuits, collectors, windows, and RF launchers used in quasi-optical gyrotrons. He implemented optimization routines for design of mode converters and optimization of collector power dissipation in high power gyrotrons. During his time at Vista Research he was a senior research engineer where he performed contract research in electromagnetics and remote sensing. While there, he developed an integral equation code for calculation of scattering from large ocean surfaces.
Patents

  1. "Multi-mode Horn" J. Neilson, Patent No. 6411263, Issue Date June 25, 2002.

  2. "Gyrotron with Mode Converter which Reduces EM Wave Leakage", J. Neilson, Patent No. 5180944, Issue Date Jan. 19, 1993.
Technical Publications (Partial Listing)

  1. "Ultra-high crystalline-quality silicon pillars formed by millimeter-wave annealing of amorphous silicon on glass", Fude Liu, Kim M. Jones,Yueqin Xu, William Nemeth, John Lohr, Jeff Neilson, Manuel J. Romero, Mowafak M. Al-Jassim, and David L. Young, Advanced Materials, 2009.

  2. "Optimization of Quasi-Optical Launchers for Multi-Frequency Gyrotrons", Jeffrey Neilson, IEEE Trans. Plasma Sci., Vol. 35, No. 6, Dec 2007.

  3. "A High Efficiency Launcher and Mirror System for Use in a 110 GHZ TE22,6 Mode Gyrotron",Michael P. Perkins , Rong Cao, Jeffrey M. Neilson and Ronald J. Vernon, International Journal of Infrared and Millimeter Waves, Volume 28, Number 3, March 2007 , pp. 207-218(12).

  4. "Optimal Synthesis of Quasi-Optical Launchers for High Power Gyrotrons", J. Neilson, IEEE Trans. Plasma Sci., Vol. 34, No. 3, June 2006.

  5. "Electric Field Integral Equation Analysis and Advanced Optimization of Quasi-Optical Launchers used in High Power Gyrotrons," J. Neilson, NATO Science Series II: Mathematics, Physics and Chemistry, Quasi-Optical Control of Intense Microwave Transmission, Vol. 203,July 2005.

  6. "An Improved Dual-Mode Horn for Gaussian Mode Generation at Millimeter and Sub-Millimeter Wavelengths," J. Neilson, IEEE Trans. Ant. Prop.,Vol. 50, No. 8, Aug 2002.

  7. "Surface Integral Equation Analysis of Quasi-Optical Launchers," J. Neilson and R. Bunger, IEEE Trans. Plasma Sci., Vol. 30, No. 3, June 2002.

  8. "Multimoded rf delay line distribution system for the Next Linear Collider", S. Tantawi, et.al., Stanford Linear Accelerator Center, Stanford, CA, J. Neilson, CCR, Saratoga, CA, , American Physical Society, Physical Review Special Topics - Accelerators and Beams, Vol. 5, 2002.

  9. "Design of a 10-MW, 91.4-GHz frequency-doubling gyroklystron for advanced accelerator applications", W. Lawson, U of M, R.L. Ives., M. Mizuhara, J.M. Neilson, M. E. Read, CCR, Saratoga, CA, Plasma Science, IEEE Transactions on , Volume: 29 Issue: 3 , June 2001.

  10. "Evaluation of the TE12 mode in circular waveguide for low-loss, high-power rf transmission", S. Tantawi, et.al., Stanford Linear Accelerator Center, Stanford, CA, Y. Chin, et.al. KEK, Ibaraki, Japan, J. Neilson, CCR, Saratoga, CA, , American Physical Society, Physical Review Special Topics - Accelerators and Beams, Vol. 3, 2000.

  11. "Design of a multistage depressed collector system for 1 MW CW gyrotrons. II. System considerations", Ives, R.L.; Singh, A.; Mizuhara, M.; Schumacher, R.; Neilson, J.; Gaudreau, M.; Casey, J.A.; Granatstein, V.L. Plasma Science, IEEE Transactions on , Volume: 27 Issue: 2 , April 1999.

  12. "Long-pulse and CW tests of a 110-GHz gyrotron with an internal, quasi-optical converter" Felch, K.; Blank, M.; Borchard, P.; Tak Sum Chu; Feinstein, J.; Jory, H.R.; Lorbeck, J.A.; Loring, C.M.; Mizuhara, Y.M.; Neilson, J.M.; Schumacher, R.; Temkin, R.J. ,Plasma Science, IEEE Transactions on , Volume: 24 Issue: 3 , June 1996

  13. "Development and Test of a 500-kW, 8-GHz Gyrotron", R.L. Ives, H.R. Jory, J. Neilson, M.Chodorow, J. Feinstein, A.D.  LaRue, L. Zitelli, and R. Martorana, IEEE Trans. on Elec. Devices, July 1993, Vol. 40 No. 7.

  14. "Design and Test of a Gyrotron with a Radially-Extracted Electron Beam", J.Neilson, ,K. Felch,J. Feinstein, H. Huey, H. Jory, R. Schumacher , IEEE Trans. on Plasma Science, June 1995, Vol. 23, No. 3. "Development and Test of a 500-kW, 8-GHz Gyrotron", R. L. Ives, H. R. Jory, J. Neilson, M. Chodorow, J. Feinstein, A.D. LaRue, L. Zitelli, and R. Martorana, IEEE Trans. on Elec. Devices, July 1993, Vol. 40 No. 7. "Determination of the resonant frequencies in a complex cavity using the scattering matrix formulation", J. Neilson, P. Latham, M. Caplan, W. Lawson, IEEE Trans. Microwave Theory Tech. MTT Aug. 1989, Vol. 37 No. 8.

  15. "The design of a high peak power relativistic magnetron injection gun", W. Lawson, et. al., Univ. of Maryland, J. Neilson, Varian Associates, Int. Journal Electronics, 1986, Vol. 61, No. 6

Back to the top

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

About CCR | Research Programs | Products | Services | Contact CCR | Home




______________________________________________