Development of output windows for high-power long-pulse gyrotrons and EC wave applications

被引：72

作者：

Thumm, M

机构：

[1] Assoc FZK Euratom, Forschungszentrum Karlsruhe, ITP, D-76021 Karlsruhe, Germany

[2] Univ Karlsruhe, Inst Hochstfrequenztech & Elekt, D-76128 Karlsruhe, Germany

来源：

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES | 1998年 / 19卷 / 01期

关键词：

gyrotron; electron cyclotron heating; dielectric vacuum window; CVD diamond;

D O I：

10.1023/A:1022514528711

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Electron cyclotron heating (ECH) is one of the main candidates for heating and current drive on ITER (170 GHz) and W7-X (140 GHz). High unit power (1 MW or greater) and high efficiency single-mode continuous-wave (CW) gyrotrons are under development in order to reduce significantly the systems costs. Face-cooled double-disk sapphire and silicon nitride windows (FC-75 Liquid cooling), cryogenically edge-cooled single-disk sapphire (liquid nitrogen, liquid neon or liquid helium cooling) and silicon (230 K refrigerator cooling) windows, water-edge-cooled single-disk CVD-diamond windows and water-cooled distributed windows are being investigated in order to solve the window problem. A water-cooled window has two very important advantages; it employs a cheap and effective coolant and it is compact and probably more reliable than other solutions and thus can also be easily used as a torus window. The present paper summarizes the development status of high-power millimeter-wave windows with emphasis on CVD diamond.

引用

页码：3 / 14

页数：12

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