Engineering design and R&D of Impurity Influx Monitor (divertor) for ITER

被引：16

作者：

Ogawa, Hiroaki ^{[1
]}

Sugie, Tatsuo ^{[1
]}

Kasai, Satoshi ^{[2
]}

Katsunuma, Atsushi ^{[3
]}

Hara, Hirotsugu ^{[4
]}

Takeyama, Norihide ^{[5
]}

Kusama, Yoshinori ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Naka, Ibaraki 3110193, Japan

[2] Nippon Adv Technol, Tokai, Ibaraki 3191112, Japan

[3] Nikon Co, Tokyo 1400015, Japan

[4] Toyama Co Ltd, Kanagawa 2280003, Japan

[5] Genesia Co, Tokyo 1810013, Japan

来源：

FUSION ENGINEERING AND DESIGN | 2008年 / 83卷 / 10-12期

关键词：

ITER; Impurity; Mechanical design; Optical alignment system; Micro-retro-reflector array; Cassegrain telescope;

D O I：

10.1016/j.fusengdes.2008.08.031

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The harsh environment in the ITER device presents many diagnostic challenges. A proposed design engineered at the Japan Atomic Energy Agency (JAEA) is of an optical alignment system installed on mirrors behind double vacuum windows. Due to the harsh environment, a piezo-motor is used as an actuator and a sliding bearing is used as a pivot. The required torque of the actuator is estimated. Trial results indicate that the actuator as described fulfills requirements. A prototype of a key optical component, the micro-retro-reflector array, is produced through the electro-forming method. Measured reflectivity yields a sufficient signal for in situ calibration. A Cassegrain telescope prototype is designed and produced using simple spherical mirrors and achromatic lenses made of silica and CaF(2). The measured focal length concurs with design objectives. Irradiation tests are necessary to verify the capabilities of these optical devices. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：1405 / 1409

页数：5

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