Analysis of the ITER ECH waveguide transmission line expansion unit

Claire Luttrell, Ethan Coffey, Ira Griffith, Greg Hanson, Arnold Lumsdaine, Chuck Schaich

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The ITER Electron Cyclotron Heating (ECH) system consists of transmission lines made up of individual sections of evacuated, aluminum, circularly corrugated waveguides. The high-intensity beam of electromagnetic radiation, necessary for plasma heating, heats the waveguides and other components in the transmission lines causing the lines to expand and contract. To maintain the structural integrity and the required straightness in the transmission lines, expansion units have to be incorporated into the ECH transmission line system. Calculations of several models of expansion units have been completed to evaluate the effect of the design and materials on the functionality of the expansion unit. Models have been evaluated assuming three different expansion ranges and several different materials.

Original languageEnglish
Pages (from-to)312-317
Number of pages6
JournalFusion Science and Technology
Volume72
Issue number3
DOIs
StatePublished - Oct 2017

Keywords

  • ECH
  • Electron cyclotron heating
  • Expansion unit
  • ITER
  • Waveguide

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