کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1569189 1514257 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
First mirror tests for ITER: Influence of material choice on the erosion/deposition mechanisms affecting optical reflectivity
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
First mirror tests for ITER: Influence of material choice on the erosion/deposition mechanisms affecting optical reflectivity
چکیده انگلیسی

Almost all optical diagnostics systems on ITER will be based on in-vessel metallic first mirrors. The possible deterioration of their surface reflectivity as a result of erosion by charge-exchange neutrals and re-deposition of material eroded from the plasma-facing components represents a serious concern for the reliability of spectroscopic and laser signals. A concerted effort within the tokamak community has been initiated to characterize these effects and seek mitigation methods. To date, the different damaging effects (erosion and deposition) have always been considered independently, neglecting any role that may be played by the substrate. In this contribution, we attempt to assess the influence of substrate material using different approaches: laboratory simulation experiments, mirror exposures in the divertor region of the TCV tokamak and numerical simulations using the Monte-Carlo code TRIDYN. Our results have potentially important implications for the choice of ITER first mirror materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volumes 363–365, 15 June 2007, Pages 259–263
نویسندگان
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