Now showing items 1-9 of 9

    • The Axially modulated, cusp-injected, large-orbit gyrotron amplifier 

      Lawson, W.; Destler, William (©1994 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1994-10)
      We introduce a novel hybrid microwave amplifier that utilizes the axial bunching mechanism of klystrons in conjunction with the energy extraction mechanism of cyclotron resonance masers. A simple analytic model is used ...
    • Beam conditioning for electron energy recovery systems in devices employing axis-encircling beams 

      Singh, A.; Lawson, W.; Goutos, D.; Hix, W.; Striffler, C.; Granatstein, V.; Destler, William (Taylor & Francis, 1988)
      Depressed collectors are extensively used in linear-beam devices. In spiraling beam devices, the motion of the spent beam needs to be converted into axial motion before it can deliver energy to the retarding axial ...
    • Depressed collectors for a large orbit gyrotron 

      Singh, A.; Goutos, D.; Hix, W.; Lawson, W.; Striffler, C.; Granatstein, V.; Destler, William (1987-12)
      An auxiliary magnetic cusp transforms rotational motion in the spent beam of a Large-Orbit Gyrotron into axial motion. Results regarding the interfacing of this cusp with a depressed collector region and the effects ...
    • Design of a high-efficiency low voltage axially modulated cusp-injected second-harmonic x-band gyrotron amplifier 

      Lawson, W.; Grigoropoulos, A.; Liu, A.; Saraph, G.; Rodgers, J.; Destler, William (©1996 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE., 1996-06)
      We present the theoretical design of a secondharmonic small-orbit gyrotron amplifier which utilizes the interaction between a 35-kV 4-A beam and a TEoll cavity to produce over 70 kW of amplified power at 9.9 GHz in a ...
    • Efficiency enhancement by using depressed collector techniques in devices employing gyrating electron beams 

      Singh, Amarjit; Chojnacki, E.; Destler, William; Goutos, D.; Granatstein, V.; Lawson, W.; Striffler, C. (Institute of Electrical and Electronics Engineers, 1987-06)
    • High power microwave generation from a large orbit gyrotron* 

      Lawson, W.; Destler, William; Striffler, C.D. (IEEE - Transactions on Nuclear Science, 1985-10)
      A study of the production of high power microwave radiation from a large orbit gyrotron in azimuthally periodic boundary systems has been conducted. Linear growth rates have been calculated for the 2¿ modes of magnetron-like ...
    • High-power microwave generation from large-orbit devices 

      Destler, William; Chojnacki, E.; Hoeberling, R.; Lawson, W.; Singh, A.; Striffler, C. (IEEE, 1988-04)
      Experimental and theoretical studies at the University of Maryland on the production of high-power microwave radiation in cusp-injected, large-orbit devices are reviewed. Three classes of devices belonging to this ...
    • Second generation, high-power, fundamental mode large-orbit gyrotron experiments 

      Irwin, K.; Destler, William; Lawson, W.; Rodgers, J.; Scannell, E.; Spang, S. (American Institute of Physics, 1991-01-15)
      Experimental studies of a large-orbit gyrotron device operating at the fundamental of the cyclotron frequency have been conducted. Based on results of initial investigations at the University of Maryland a linear beam ...
    • Studies of microwave radiation from a low-energy rotating electron beam in a multiresonator magnetron cavity 

      Chojnacki, E.; Destler, William; Lawson, W.; Namkung, W. (American institute of physics - Journal of applied physics, 1987-02-15)
      Presents a study on the generation of microwave radiation at high harmonics of the cyclotron frequency. Reasons for the interest in the configuration process; Theory of beam dynamics; Results of the experiments.