Experimental eighth harmonic cusptron device

K. K. Tiong, Spencer Kuo, P. E. Miller, W. Namkung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A cusptron device operating at eighth cyclotron harmonic has been set up for the development of a compact and high-power microwave source. An axis-encircling electron beam of 25 KeV (γ= 1.05) as the radiation source is produced from an annular thermionic cathode of 1.1-cm radius and 0.16-cm radial thickness with a Pierce-type focusing electrode together with a cusp magnetic field. Slotted cylindrical waveguides similar to the anode blocks of magnetron are used. Like the magnetron device, the cusptron can have π-mode and 2π-mode operations. It is the purpose of this work to identify experimentally which is the more efficient mode of operation. A comparison of the operations is made by imposing a fixed output frequency in the waveguide design. For the 2π-mode operation, an 8-slotted waveguide with b/a = 2.2 is used, where b and a are the radii of the slots and the inner wall of the waveguide, respectively. A 16-slotted waveguide with b/a = 1.23 is used for the π-mode operation. The functional dependence of the radiation efficiencies on beam current at fixed beam energy (γ= 1.05) has also been studied.

Original languageEnglish (US)
Title of host publicationIEEE Int Conf Plasma Sci 1988
PublisherPubl by IEEE
Pages104-105
Number of pages2
StatePublished - 1988
EventIEEE International Conference on Plasma Science - 1988 - Seattle, WA, USA
Duration: Jun 6 1988Jun 8 1988

Other

OtherIEEE International Conference on Plasma Science - 1988
CitySeattle, WA, USA
Period6/6/886/8/88

Fingerprint

Waveguides
Thermionic cathodes
Radiation
Circular waveguides
Cyclotrons
Electron beams
Anodes
Microwaves
Magnetic fields
Electrodes

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Tiong, K. K., Kuo, S., Miller, P. E., & Namkung, W. (1988). Experimental eighth harmonic cusptron device. In IEEE Int Conf Plasma Sci 1988 (pp. 104-105). Publ by IEEE.

Experimental eighth harmonic cusptron device. / Tiong, K. K.; Kuo, Spencer; Miller, P. E.; Namkung, W.

IEEE Int Conf Plasma Sci 1988. Publ by IEEE, 1988. p. 104-105.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tiong, KK, Kuo, S, Miller, PE & Namkung, W 1988, Experimental eighth harmonic cusptron device. in IEEE Int Conf Plasma Sci 1988. Publ by IEEE, pp. 104-105, IEEE International Conference on Plasma Science - 1988, Seattle, WA, USA, 6/6/88.
Tiong KK, Kuo S, Miller PE, Namkung W. Experimental eighth harmonic cusptron device. In IEEE Int Conf Plasma Sci 1988. Publ by IEEE. 1988. p. 104-105
Tiong, K. K. ; Kuo, Spencer ; Miller, P. E. ; Namkung, W. / Experimental eighth harmonic cusptron device. IEEE Int Conf Plasma Sci 1988. Publ by IEEE, 1988. pp. 104-105
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