NDLI: Attachment of ferrite material used in an active matching network for LHCD on Alcator C-Mod

Content Provider	IEEE Xplore Digital Library
Author	Murray, R.A. Wukitch, S.J. Fitzgerald, E. Kanojia, A.D. Koert, P. Mackay, G. Nickerson, J. Terry, D. Wallace, G.M.
Copyright Year	2013
Description	Author affiliation: Massachusetts Inst. of Technol. Plasma Sci. & Fusion Center, Cambridge, MA, USA (Murray, R.A.; Wukitch, S.J.; Fitzgerald, E.; Kanojia, A.D.; Koert, P.; Mackay, G.; Nickerson, J.; Terry, D.; Wallace, G.M.)
Abstract	In order to increase power coupling efficiency of the Lower Hybrid Current Drive system (LHCD) on Alcator C-Mod an active double stub matching network is being developed. One aspect of this development requires application of ferrite material of certain geometry in a section of WR187 waveguide with expected operation in excess of 200kW of microwave power. This has proven to be a challenge due, in large part, to differences in the Coefficient of Thermal Expansion (CTE) between materials at the ferrite-waveguide and ferrite-coating interfaces, the inherent brittleness of ferrite material and the level of homogeneity in the samples. This paper will discuss a method to modify and attach ferrite material to the waveguide. As necessary, materials issues and processes will be discussed as will the effort to develop a set of guidelines to insure process integrity and repeatability across the multichannel LHCD matching network required for C-Mod and other machines.
Starting Page	1
Ending Page	4
File Size	415815
Page Count	4
File Format	PDF
e-ISBN	9781479901715
DOI	10.1109/SOFE.2013.6635355
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Ferrites Bonding Steel Soldering Gold Stress
Content Type	Text
Resource Type	Article

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