کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1825933 1027371 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
First Mirrors Test in JET for ITER: An overview of optical performance and surface morphology
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
First Mirrors Test in JET for ITER: An overview of optical performance and surface morphology
چکیده انگلیسی

Metallic mirrors will be essential components of all optical systems for plasma diagnosis in ITER. A comprehensive First Mirror Test (FMT) has been carried out in the JET tokamak. The exposure was followed by a characterisation of mirrors and their carriers. The main results obtained by optical and surface analysis methods are: (i) reflectivity of all tested mirrors is degraded either by erosion with charge exchange neutrals or by the formation of thick deposits; (ii) deuterium and carbon are the main elements detected on all mirror surfaces and the presence of beryllium is also found in several cases; (iii) thick deposits show columnar structure; (iv) bubble-like structures are detected in deposits; their formation is a probable reason for deposits’ disintegration and peeling-off; (v) the deposition in channels in the divertor cassettes is pronounced at the very entrance and then it sharply decreases with the distance from the plasma, λ∼5–7 mm.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 623, Issue 2, 11 November 2010, Pages 818–822
نویسندگان
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