Effects of tapered magnetic fields and structures on long-pulse gyrotron backward-wave oscillator performance

Ronald M. Gilgenbach; M. T. Walter; Jonathan M. Hochman; John W. Luginsland; J. I. Rintamaki; Reginald L. Jaynes; Yue Ying Lau; Thomas A. Spencer

doi:10.1117/12.218569

8 September 1995 Effects of tapered magnetic fields and structures on long-pulse gyrotron backward-wave oscillator performance

Ronald M. Gilgenbach, M. T. Walter, Jonathan M. Hochman, John W. Luginsland, J. I. Rintamaki, Reginald L. Jaynes, Yue Ying Lau, Thomas A. Spencer

Author Affiliations +

Proceedings Volume 2557, Intense Microwave Pulses III; (1995) https://doi.org/10.1117/12.218569
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Results are presented of microwave spectral measurements on a gyrotron-backward-wave- oscillator (gyro-BWO) driven by a long-pulse, relativistic electron beam. The Michigan Electron Long Beam Accelerator (MELBA) generates 800 kV, 1-4 kA, 0.5 microsecond(s) electron beams from a cold cathode. Gyro-BWO microwave emission has shown high-power fundamental-cyclotron (4.5-5 GHz) emission (peak of approximately 40-50 MW tube power). Second cyclotron-harmonic gyro-BWO microwave emission spectra are reported here in the frequency range from 5-6 GHz, at lower tube powers (MW range). The effects of tapered magnetic fields with uniform or tapered interaction radii are to broaden the microwave spectrum over the uniform tube-field case.

Citation Download Citation

Ronald M. Gilgenbach, M. T. Walter, Jonathan M. Hochman, John W. Luginsland, J. I. Rintamaki, Reginald L. Jaynes, Yue Ying Lau, and Thomas A. Spencer "Effects of tapered magnetic fields and structures on long-pulse gyrotron backward-wave oscillator performance", Proc. SPIE 2557, Intense Microwave Pulses III, (8 September 1995); https://doi.org/10.1117/12.218569

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