Zobrazeno 1 - 10
of 254
pro vyhledávání: '"W.W. Destler"'
Autor:
Yuval Carmel, B. Levush, David K. Abe, Thomas M. Antonsen, W.W. Destler, Alan Bromborsky, S. M. Miller
Publikováno v:
IEEE Transactions on Plasma Science. 26:591-604
Internal field-emission breakdown in the electrodynamic structures of high-power microwave (HPM) devices can seriously limit the device's output power and pulse duration. Increasing the diameter of the electrodynamic structure to several times an ele
Publikováno v:
Journal of Applied Physics. 83:3514-3520
A set of five experiments to study the microwave emission accompanying the high voltage pseudospark discharge are reported. The generation of the microwaves in all cases but one is attributed to electron beam-plasma interaction. In the other case, Ch
Publikováno v:
IEEE Transactions on Electron Devices. 44:2022-2028
We present the design of a prebunched, third harmonic small-orbit gyrotron experiment that utilizes a 45 kV, 8 A beam to produce over 185 kW of amplified power at 9.9 GHz in a 1.23 kG magnetic field. We detail the design of the electron gun, which pr
Publikováno v:
Journal of Applied Physics. 80:4887-4895
The design and execution of a pulsed high‐voltage (350–400 keV) triggered pseudospark discharge experiment is reported. Experimental studies were carried out to obtain an optimal design for stable and reliable pseudospark operation in a high‐vo
Publikováno v:
IEEE Transactions on Plasma Science. 24:678-686
We present the theoretical design of a second-harmonic small-orbit gyrotron amplifier which utilizes the interactions between a 35-kV 4-A beam and a TE/sub 011/ cavity to produce over 70 kW of amplified power at 9.9 GHz in a 1.83-kG magnetic field. O
Autor:
Z.X. Zhang, Baruch Levush, S. Cheng, W.W. Destler, V.L. Granatstein, Thomas M. Antonsen, John C. Rodgers
Publikováno v:
IEEE Transactions on Plasma Science. 24:750-757
The results of experiments with a short period (9.6 mm) wiggler sheet electron beam (1.0 mm/spl times/2.0 cm) millimeter-wave free electron laser (FEL) amplifier are presented. This FEL amplifier utilized a strong wiggler field for sheet beam confine
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 375:160-163
The study of sheet-beam, small-period-wiggler FELs as candidate sources for heating magnetic fusion plasmas has achieved a major milestone. In a proof-of-principle, pulsed experiment, saturated FEL amplifier operation was realized with 250 kW of outp
Publikováno v:
IEEE Transactions on Electron Devices. 43:1021-1028
We present the design of a 100 kW, J-band, third harmonic large-orbit gyrotron amplifier which utilizes the interaction between a 45 kV, 4 A beam and a vane resonator output cavity operating in the "/spl pi/"-mode. An efficiency of 55% is predicted w
Autor:
S. Cheng, W.W. Destler
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 373:305-308
A method for measuring sheet electron beam emittance is developed. The effective emittances are obtained through construction of particle distribution in the transverse dimensions using slit-pinhole parameters. Measurement of a mild relativistic shee
Autor:
Xiaodong Zheng, W.W. Destler, Kazuo Minami, Yuval Carmel, Yasushi Aiba, V.L. Granatstein, Md. Ruhul Amin, K. Ogura, Tsuguhiro Watanabe
Publikováno v:
IEEE Transactions on Plasma Science. 23:124-132
We study the starting conditions for a large diameter (diameter/wavelength=4.8) finite length backward wave oscillator designed for 24-GHz operation at the fundamental TM/sub 01/ mode. This geometry is very promising for high power handling capabilit