Operation of an ungated diamond field-emission array cathode in a L-band radiofrequency electron source

Journal Article · Mon Jun 30 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4884375· OSTI ID:22303910

Piot, P. ^[1]; Brau, C. A.; Gabella, W. E.; Ivanov, B.; Mendenhall, M. H. ^[2]; Choi, B. K. ^[3]; Blomberg, B.; Mihalcea, D.; Panuganti, H. ^[1]; Jarvis, J. ^[4]; Prieto, P.; Reid, J. ^[5]

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1. Northern Illinois Center for Accelerator and Detector Development and Department of Physics, Northern Illinois University, DeKalb, Illinois 60115 (United States)
2. Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235 (United States)
3. Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37235 (United States)
4. Advanced Energy Systems, Inc., Medford, New York 11763 (United States)
5. Accelerator Division, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

We report on the operation of a field-emitter-array cathode in a conventional L-band radio-frequency electron source. The cathode consisted of an array of ∼10{sup 6} diamond tips on pyramids. Maximum current on the order of 15 mA was reached and the cathode did not show appreciable signs of fatigue after weeks of operation. The measured Fowler-Nordheim characteristics, transverse beam density, and current stability are discussed.

• OSTI ID: 22303910
• Journal Information: Applied Physics Letters, Vol. 104, Issue 26; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CATHODES
CURRENTS
DENSITY
DIAMONDS
ELECTRON SOURCES
FIELD EMISSION
RADIOWAVE RADIATION
STABILITY