Investigation of lower-order mode suppression in a high-current high-voltage gyro-BWO experiment

Thomas A. Spencer; Mark D. Stump; Kyle J. Hendricks; Ronald M. Gilgenbach

doi:10.1117/12.255398

28 October 1996 Investigation of lower-order mode suppression in a high-current high-voltage gyro-BWO experiment

Thomas A. Spencer, Mark D. Stump, Kyle J. Hendricks, Ronald M. Gilgenbach

Proceedings Volume 2843, Intense Microwave Pulses IV; (1996) https://doi.org/10.1117/12.255398
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

The Air Force Phillips Laboratory Gyro-BWO experiment is utilizing the RAMBO pulse, with electron beam parameters of: V_D equals 300 - 800 kV; I_D equals 1.50 kA; pulselength equals 1 - 3 microsecond(s) . An annular electron beam of approximately 1 - 3 kA is produced by an annular aluminum cathode. The interaction cavity is designed to radiate in the frequency range of 4.2 - 5.5 GHz in a TE₀₁ mode. The interaction cavity has a radius of 4.37 cm and a length of 15 cm. Diode and interaction magnetic fields are used together to provide a magnetic compression of the electron beam. C-Band bevel- cut antennas located at the diode end of the experiment are used to extract the backward wave. Experiments have shown evidence of mode competition existing as two different frequency values appearing at the same time. A helical slotted cavity has been designed, in an effort to suppress the TE_nl modes, n not equal to 0. Analysis and numerical simulations from the 3D code HFSS will be presented, as well as the latest experimental results.

Citation Download Citation

Thomas A. Spencer, Mark D. Stump, Kyle J. Hendricks, and Ronald M. Gilgenbach "Investigation of lower-order mode suppression in a high-current high-voltage gyro-BWO experiment", Proc. SPIE 2843, Intense Microwave Pulses IV, (28 October 1996); https://doi.org/10.1117/12.255398

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available