The EC H&CD Transmission Line for ITER

TitleThe EC H&CD Transmission Line for ITER
Publication TypeJournal Article
Year of Publication2011
AuthorsF. Gandini, T.S Bigelow, B. Becket, J.B Caughman, D. Cox, C. Darbos, T. Gassmann, M.A Henderson, O. Jean, K. Kajiwara, N. Kobayashi, C. Nazare, Y. Oda, T. Omori, D. Purohit, D.A Rasmussen, D.MS Ronden, G. Saibene, K. Sakamoto, M.A Shapiro, K. Takahashi, R.J Temkin
JournalFusion Science and Technology
Volume59
Issue4
Number4
Pagination709-717
Date PublishedMay
Type of ArticleProceedings Paper
ISBN Number1536-1055
Keywordscomponents, electron cyclotron heating and current drive, ITER, SYSTEM, transmission lines
Abstract

The transmission line (TL) subsystem associated with the ITER electron cyclotron heating and current drive system has reached the conceptual design maturity. At this stage the responsibility of finalizing the design has been transferred from the ITER Organization to the U.S. Domestic Agency. The purpose of the TL is to transmit the microwaves generated by the 170-GHz gyrotrons installed in the radio-frequency building to the launchers located in one equatorial and four upper tokamak ports. Each TL consists of evacuated HE11 wave guides, direct-current breaks, power monitors, mitre bends, polarizers, switches, loads, and pumping sections and will have a typical length that ranges from 100 to 160 m. Overall transmission efficiency could be as high as 92% depending on the specific path between a given gyrotron and launcher. All components are required to be 2-MW compatible, and their layout and organization have been optimized for simplifying the maintenance accessibility and monitoring the primary tritium barrier integrity. Two different TL layouts are at the moment under study, to accommodate the two alternative options for the European sources: four 2-MW units or eight 1-MW units. In this paper the actual design is presented and the technical requirements are discussed.

DOI10.13182/FST05-38
Division

FP

Department

TP

PID

7a012e30720ac28e63f344ae41fb68fc

Alternate TitleFusion Sci. Technol.

Go back one page.