Electrically Insulated MLI and Thermal Anchor

被引：5

作者：

Kamiya, Koji ^{[1
]}

Furukawa, Masato ^{[1
]}

Hatakenaka, Ryuta ^{[2
]}

Miyakita, Takeshi ^{[2
]}

Murakami, Haruyuki ^{[1
]}

Kizu, Kaname ^{[1
]}

Tsuchiya, Katsuhiko ^{[1
]}

Koide, Yoshihiko ^{[1
]}

Yoshida, Kiyoshi ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, 801-1 Mukoyama, Naka, Ibaraki 3110193, Japan

[2] Japan Aerosp Explorat Agcy, Tsukuba, Ibaraki 3058505, Japan

来源：

ADVANCES IN CRYOGENIC ENGINEERING | 2014年 / 1573卷

关键词：

D O I：

10.1063/1.4860736

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The thermal shield of JT-60SA is kept at 80 K and will use the multilayer insulation (MLI) to reduce radiation heat load to the superconducting coils at 4.4 K from the cryostat at 300 K. Due to plasma pulse operation, the MLI is affected by eddy current in toroidal direction. The MLI is designed to suppress the current by electrically insulating every 20 degree in the toroidal direction by covering the MLI with polyimide films. In this paper, two kinds of designs for the MLI system are proposed, focusing on a way to overlap the layers. A boil-off calorimeter method and temperature measurement has been performed to determine the thermal performance of the MLI system. The design of the electrical insulated thermal anchor between the toroidal field (TF) coil and the thermal shield is also explained.

引用

页码：455 / 462

页数：8

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