High-energy synchrotron X-ray tomography coupled with digital image correlation highlights likely failure points inside ITER toroidal field conductors

Two sections of heat-treated (HT) and non-heat-treated (NHT) Cable-in-Conduit Conductor (CICC) of a design similar to the ITER tokomak have been imaged using very high energy X-ray tomography at the ESRF beamline ID19. The sample images were collected at four temperatures down to 77 K. These results...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2021-11, Vol.11 (1), p.23141-23141, Article 23141
Main Authors: Warr, Ryan, Jewell, Matthew C., Mitchell, Neil, Rack, Alexander, Swanson, Jack, Tronza, Vladimir, Cernik, Robert
Format: Article
Language:English
Subjects:
639/166
639/301
639/4077
Conductors
Humanities and Social Sciences
multidisciplinary
Physics
Science
Science (multidisciplinary)
Tomography
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two sections of heat-treated (HT) and non-heat-treated (NHT) Cable-in-Conduit Conductor (CICC) of a design similar to the ITER tokomak have been imaged using very high energy X-ray tomography at the ESRF beamline ID19. The sample images were collected at four temperatures down to 77 K. These results showed a greater degree of movement, bundle distortion and touching strands in the NHT sample. The HT sample showed non-linear movements with temperature especially close to 77 K; increasing non-circularity of the superconducting fibre bundles towards the periphery of the CICC, and touching bundles throughout the CICC. The images have highlighted where future design might improve potential weakness, in particular at the outer perimeters of the conductor and the individual sub-cable, ‘petal’ wraps.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-01999-5