Infrared monitor of barrier window temperature during high power RF pulses

被引：2

作者：

Sozzi, C ^{[1
]}

Nardone, A ^{[1
]}

Mellera, V ^{[1
]}

Bruschi, A ^{[1
]}

Cirant, S ^{[1
]}

Gandini, F ^{[1
]}

Gittini, G ^{[1
]}

Granucci, G ^{[1
]}

Muzzini, V ^{[1
]}

Simonetto, A ^{[1
]}

Spinicchia, N ^{[1
]}

机构：

[1] ENEA, CNR Fusione, EURATOM Assoc, Ist Fis Plasma, I-20125 Milan, Italy

来源：

FUSION ENGINEERING AND DESIGN | 2001年 / 56-57卷

关键词：

infrared monitor; barrier window; gyrotron; ECRH;

D O I：

10.1016/S0920-3796(01)00384-2

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：

Barrier windows are critical components in electron cyclotron plasma heating/current drive (ECRH/ECCD) systems for fusion plasma experiments in which high frequency and high power microwave beams are used as additional heating or plasma profiles control. Even though material characteristics and thickness are chosen in order to reduce the absorbed power to a minimum, the window temperature is of major concern in high power, long pulse or CW operation. An infrared diagnostic device has been implemented on one of the boron nitride windows of the 140 GHz, 0.5 s, 0.5 MW per line ECRH system of the FTU tokamak. The evolution of the temperature of the barrier window can be monitored by acquisition of several IR emission profiles during the gyrotron pulse. Moreover, information on the beam pattern quality can be inferred. (C) 2001 Elsevier Science BN. All rights reserved.

引用

页码：661 / 665

页数：5