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Title: Analysis of the ITER ECH Waveguide Transmission Line Expansion Unit

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 in this paper to evaluate the effect of the design and materials on the functionality of the expansion unit. Finally, models have been evaluated assuming three different expansion ranges and several different materials.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1394150
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Volume: 72; Journal Issue: 3; Journal ID: ISSN 1536-1055
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; expansion unit; ITER; electron cyclotron heating; ECH; waveguide

Citation Formats

Luttrell, Claire, Coffey, Ethan, Griffith, Ira, Hanson, Greg, Lumsdaine, Arnold, and Schaich, Chuck. Analysis of the ITER ECH Waveguide Transmission Line Expansion Unit. United States: N. p., 2017. Web. doi:10.1080/15361055.2017.1333847.
Luttrell, Claire, Coffey, Ethan, Griffith, Ira, Hanson, Greg, Lumsdaine, Arnold, & Schaich, Chuck. Analysis of the ITER ECH Waveguide Transmission Line Expansion Unit. United States. doi:10.1080/15361055.2017.1333847.
Luttrell, Claire, Coffey, Ethan, Griffith, Ira, Hanson, Greg, Lumsdaine, Arnold, and Schaich, Chuck. Wed . "Analysis of the ITER ECH Waveguide Transmission Line Expansion Unit". United States. doi:10.1080/15361055.2017.1333847.
@article{osti_1394150,
title = {Analysis of the ITER ECH Waveguide Transmission Line Expansion Unit},
author = {Luttrell, Claire and Coffey, Ethan and Griffith, Ira and Hanson, Greg and Lumsdaine, Arnold and Schaich, Chuck},
abstractNote = {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 in this paper to evaluate the effect of the design and materials on the functionality of the expansion unit. Finally, models have been evaluated assuming three different expansion ranges and several different materials.},
doi = {10.1080/15361055.2017.1333847},
journal = {Fusion Science and Technology},
issn = {1536-1055},
number = 3,
volume = 72,
place = {United States},
year = {2017},
month = {7}
}

Works referenced in this record:

HE 11 mitre bends and gaps in a circular corrugated waveguide
journal, October 1994