Loaded Q's and field profiles of tapered axisymmetric gyrotron cavities

Journal Article · Wed Dec 01 00:00:00 EST 1982 · IEEE Trans. Electron Devices; (United States)

DOI:https://doi.org/10.1109/T-ED.1982.21052· OSTI ID:6103328

Derfler, H; Grant, T J; Stone, D S

A theoretical investigation of the vacuum electromagnetic properties of a class of tapered cylindrical resonant cavities employed in gyrotron design is reported. The cavity properties which determine gyrotron interaction efficiency-field profiles and loaded Q's-are predicted as a function of the geometric parameters. The authors show that this resonator geometry is superior to other designs for several reasons: 1) its properties are less sensitive to machining tolerances; 2) it produces negligible mode conversion at the output; and 3) in contrast with the imitations of iris-coupled designs, is capable of providing loaded Q's as low as about 0.3 Q diff where Q diff=4..pi..(L/lambda)/sup 2/ is the ''diffraction limit.'' Cold tests in the millimeter bands are reported which verify these conclusions.

• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6103328
• Journal Information: IEEE Trans. Electron Devices; (United States), Vol. 29:12
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CAVITY RESONATORS
MAGNETIC PROPERTIES
ASYMMETRY
EFFICIENCY
ELECTROMAGNETIC FIELDS
INTERACTIONS
MICROWAVE AMPLIFIERS
Q RESONANCES
THEORETICAL DATA
VACUUM STATES
AMPLIFIERS
BOSONS
DATA
ELECTRONIC EQUIPMENT
ELEMENTARY PARTICLES
EQUIPMENT
HADRONS
INFORMATION
MESON RESONANCES
MESONS
MICROWAVE EQUIPMENT
NUMERICAL DATA
PHYSICAL PROPERTIES
RESONANCE PARTICLES
RESONATORS
420800* - Engineering- Electronic Circuits & Devices- (-1989)