title: Polycapillary lenses for soft x-ray transmission in ITER: Model, comparison with experiments, and potential application.
abstract: Measuring Soft X-Ray (SXR) radiation [0.1 keV; 15 keV] in tokamaks is a standard way of extracting valuable information on the particle transport and magnetohydrodynamic activity. Generally, the analysis is performed with detectors positioned close to the plasma for a direct line of sight. A burning plasma, like the ITER deuterium-tritium phase, is too harsh an environment to permit the use of such detectors in close vicinity of the machine. We have thus investigated in this article the possibility of using polycapillary lenses in ITER to transport the SXR information several meters away from the plasma in the complex port-plug geometry.
authors.affiliation: CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France.
authors.forename: D
authors.initials: D
authors.lastname: Mazon
authors.affiliation: Ecole Polytechnique de Paris, Paris, France.
authors.forename: C
authors.initials: C
authors.lastname: Liegeard
authors.affiliation: CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France.
authors.forename: A
authors.initials: A
authors.lastname: Jardin
authors.affiliation: ITER Organization, Saint-Paul-lez-Durance, France.
authors.forename: R
authors.initials: R
authors.lastname: Barnsley
authors.affiliation: ITER Organization, Saint-Paul-lez-Durance, France.
authors.forename: M
authors.initials: M
authors.lastname: Walsh
authors.affiliation: Department of Physics SUPA, University of Strathclyde, Glasgow G4 ONG, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: O'Mullane
authors.affiliation: ITER Organization, Saint-Paul-lez-Durance, France.
authors.forename: A
authors.initials: A
authors.lastname: Sirinelli
authors.affiliation: University Bordeaux, CNRS, CEA, CELIA, UMR5107, Talence 33405, France.
authors.forename: F
authors.initials: F
authors.lastname: Dorchies