An intermediate power amplifier upgrade for 40 to 80 Mhz for the alcator C-mod ICRF transmitters
Name
Binus-2009-An intermediate power amplifier upgrade for 40 to 80 Mhz for the alcator C-mod ICRF transmitters.pdf
Size
200.82 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Pfeiffer, Andrew T.
Murray, Richard A.
Lin, Yijun
Wukitch, Stephen James
Binus, Alan
Gwinn, D.
Date Issued
August 2009
Journal
23rd IEEE/NPSS Symposium on Fusion Engineering, 2009. SOFE 2009.
Publisher
Institute of Electrical and Electronics Engineers
Citation
Binus, A. et al. “An intermediate power amplifier upgrade for 40 to 80 Mhz for the alcator C-Mod ICRF transmitters.” Fusion Engineering, 2009. SOFE 2009. 23rd IEEE/NPSS Symposium on. 2009. 1-4. © 2009 IEEE
Version
Final published version
Abstract
ICRF operations with Alcator C-Mod consists of 4 transmitters, of which two are tunable within the 40 MHz to 80 MHz band. These transmitters were comprised of 3 stages all of which employed vacuum tube amplifiers. As a part of the general plan to upgrade the two tunable transmitters, a project was implemented to replace the first stage, the intermediate power amplifier, with a 10 kilowatt solid state broadband amplifier. There were two primary benefits from the upgrade. The tuning of the transmitters was considerably simplified and better performance was obtained under a variety of operational conditions by having a conservative power margin. The improvements obtained are an important first step toward advancing the overall radio frequency performance of the transmitters and minimizing the time intensive task of changing the frequency of operation.
MIT Department
Massachusetts Institute of Technology. Plasma Science and Fusion Center
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1109/FUSION.2009.5226410
