Method to deduce local impurity transport quantities from the evolution of tomographically reconstructed bolometer signals during tracer injection at TJ-II

Journal Article · Fri Oct 01 00:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1787585· OSTI ID:20641280

Zurro, B; Ochando, M A; Baciero, A; McCarthy, K J; Medina, F; Lopez-Sanchez, A; Rapisarda, D; Jimenez, D; Fernandez, A; Pastor, I; Herranz, J; Dux, R ^[1]

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1. Laboratorio Nacional de Fusion, Asociacion EURATOM/CIEMAT para Fusion, Madrid (Spain)

A method to obtain local impurity transport from injected impurities in the TJ-II stellarator is presented. By using a one-dimensional full impurity transport code STRAHL, the transient behavior of the localized response of global radiation monitors to impurity injection is matched by the code results using an iterative method. The distinctive feature of the present approach with respect to other works is that we use tomographically reconstructed evolutions of total radiated power from a bolometer array. The method will be illustrated with analysis of blow-off results of experiments performed in the TJ-II stellarator.

• OSTI ID: 20641280
• Journal Information: Review of Scientific Instruments, Vol. 75, Issue 10; Conference: 15. topical conference on high temperature plasma diagnostics, San Diego, CA (United States), 19-22 Apr 2004; Other Information: DOI: 10.1063/1.1787585; (c) 2004 American Institute of Physics; 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
BOLOMETERS
COMPUTERIZED TOMOGRAPHY
ITERATIVE METHODS
PLASMA IMPURITIES
RADIATION MONITORS
STELLARATORS
TRANSIENTS