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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Cohen, W.E. Gilgenbach, R.M. Jaynes, R.L. Rintamaki, J.I. Peters, C.W. Lau, Y.Y. Spencer, T.A. Scheitrum, G.P. Laurent, L.L. |
| Copyright Year | 1999 |
| Description | Author affiliation: Michigan Univ., Ann Arbor, MI, USA (Cohen, W.E.) |
| Abstract | Summary form only given, as follows. Spectroscopic measurements have been performed to characterize the undesired plasma in a multi-megawatt coaxial gyrotron. This gyrotron is driven by the Michigan Electron Long Beam Accelerator (MELBA) at parameters: V=-800 kV, I/sub tube/=0.3 kA, and pulselengths of 0.5-1 /spl mu/s. Pulse shortening typically limits the highest (/spl sim/40 MW) microwave power pulselength to 50-100 ns. Potential explanations of pulse shortening are being investigated, particularly plasma production inside the cavity and at the e-beam collector. The source of this plasma is believed to be due to water vapor. Plasma H-/spl alpha/ line radiation has been characterized and correlated with microwave power and microwave cutoff. Experiments are underway to determine the effects of RF plasma processing of the coaxial cavity and collector. A collaborative effort is underway with the Stanford Linear Accelerator Center/U.C. Davis to study RF cavity breakdown. A SEM is being used to examine the surface effects of RF processing cavity parts. |
| File Size | 100961 |
| File Format | |
| ISBN | 0780352246 |
| ISSN | 07309244 |
| DOI | 10.1109/PLASMA.1999.829700 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1999-06-24 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Plasma materials processing Spectroscopy Plasma accelerators Plasma measurements Plasma sources Radio frequency Coaxial components Gyrotrons Electron beams Electron optics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering |
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