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Title: Optical dumps for H-alpha and visible spectroscopy in ITER

High-reflective Beryllium cover of ITER first wall (R≈30–60%) causes remarkable increase of divertor stray light component (DSL). Optical dumps are well-known solution for DSL attenuation. In this work few types of optical dumps have been examined both by modeling and experimental studies. Taking into account the limitations, induced by ITER first wall design, OD optimized design has been proposed which could decrease divertor stray light component by 10..100 times depending on incidence angle of light.
Authors:
; ; ;  [1]
  1. NRC Kurchatov Institute, 123182 Moscow (Russian Federation)
Publication Date:
OSTI Identifier:
22308286
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1612; Journal Issue: 1; Conference: International conference on fusion reactor diagnostics, Varenna (Italy), 9-13 Sep 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATTENUATION; BERYLLIUM; DESIGN; DIVERTORS; FIRST WALL; INCIDENCE ANGLE; ITER TOKAMAK; MATHEMATICAL SOLUTIONS; SIMULATION; SPECTROSCOPY