Upgrade of the infrared camera diagnostics for the JET ITER-like wall divertor

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4740523· OSTI ID:22093840

Balboa, I.; Arnoux, G.; Kinna, D.; Thomas, P. D. ^[1]; Eich, T.; Sieglin, B.; Devaux, S.; Zeidner, W. ^[2]; Morlock, C.; Kruezi, U.; Sergienko, G.; Rack, M. ^[3]

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1. EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom)
2. Max-Planck-IPP, EURATOM Association, D-85748 Garching (Germany)
3. Institut fuer Energie und Klimaforschung Plasmaphysik, Forschungszentrum Juelich GmbH, EURATOM Association FZJ, D-52425 Juelich (Germany)

For the new ITER-like wall at JET, two new infrared diagnostics (KL9B, KL3B) have been installed. These diagnostics can operate between 3.5 and 5 {mu}m and up to sampling frequencies of {approx}20 kHz. KL9B and KL3B image the horizontal and vertical tiles of the divertor. The divertor tiles are tungsten coated carbon fiber composite except the central tile which is bulk tungsten and consists of lamella segments. The thermal emission between lamellae affects the surface temperature measurement and therefore KL9A has been upgraded to achieve a higher spatial resolution (by a factor of 2). A technical description of KL9A, KL9B, and KL3B and cross correlation with a near infrared camera and a two-color pyrometer is presented.

• OSTI ID: 22093840
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CAMERAS
CARBON FIBERS
CORRELATIONS
DIVERTORS
ELECTRON TEMPERATURE
EMISSION
IMAGES
ION TEMPERATURE
ITER TOKAMAK
PLASMA
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
PYROMETERS
SPATIAL RESOLUTION
SURFACES
TEMPERATURE MEASUREMENT