Plasma and Fusion Research

Volume 11, 2405083 (2016)

Regular Articles

Preliminary Thermal Analysis of Critical Components in ITER Lower Port #02
Toshiyuki MARUYAMA1,2), Sin-iti KITAZAWA1), Hiroaki OGAWA1) and Kiyoshi ITAMI1)
Naka Fusion Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
TOYAMA Co. Ltd., Yamakita-machi, Ashigarakami-gun, Kanagawa 258-0112, Japan
(Received 27 November 2015 / Accepted 5 April 2016 / Published 17 May 2016)


ITER diagnostic lower ports will be used to exchange divertor cassettes and install diagnostic systems. In-vessel components of diagnostic lower port #02 (LP#02) will be mounted on a divertor cassette and a support structure, so-called a diagnostic rack, to be removed and reinstalled collectively. Japan Domestic Agency is responsible for procurements of an integration engineering of LP#02 and a divertor impurity monitor, a main tenant system in LP#02. This paper presents preliminary thermal analyses for two critical components in LP#02, the diagnostic rack and a mirror box on the divertor cassette, which will be exposed to the harsh thermal load from plasma. Realistic fabrication methods for cooling the diagnostic rack and a required cooling path layout of the mirror box on the divertor cassette have been assessed to implement the preliminary design from the viewpoint of thermal analysis.


ITER, JADA, thermal analysis, lower port, diagnostics

DOI: 10.1585/pfr.11.2405083


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