Direct observation of electrons in microwave vacuum components
Abstract
Apparatus which is used to directly observe electrons in microwave vacuum components was designed and implemented into a WR-284 like waveguide operated at 2.85 GHz with up to approx. 1 MW power. To generate desired electric field levels for driving secondary emission, the waveguide structure is manipulated by reducing the test section height to 6 mm from the standard WR-284 rectangular waveguide height of 34 mm. Both test and standard sections were operated in the dominant TE10 mode. A 1 mm aperture was cut into the broadside wall of the waveguide section enabling a portion of electrons in the waveguide to enter a properly biased electron multiplier tube mounted atop of the test section. Waveforms are presented showing the direct measurement of electrons, providing a local detection method with nanosecond temporal resolution. Future work will incorporate the test setup for multipactor studies.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 01, 2019
- Source ID
- 10.1063/1.5089764
Entities
People
- Alvin V. Garcia
- Andreas Neuber
- J. Dickens
- John Mankowski
- M. Powell
- Z Shaw
Organizations
- Air Force Office of Scientific Research
- Texas Tech University