Infrared imaging video bolometer for the large helical device
Infrared imaging video bolometer for the large helical device
复制标题
大型螺旋装置红外成像视频测辐射热计
DOI：
10.1063/1.1319597
复制
发表时间：
2001
影响因子：
1.6
通讯作者：
N. Ashikawa
中科院分区：
文献类型：
--
作者：
B. Peterson;M. Osakabe;M. Shoji;N. Ashikawa
去年，美国国家聚变科学研究所（NIFS）正在开发一种新型红外成像测辐射热计，称为红外成像视频测辐射热计（IRVB）。这种诊断的原型已经在NIFS设计和建造，并安装在大型螺旋装置（LHD）上，并成功运行。该诊断仪利用安装在框架中的66×90×0.001 mm金箔来检测通过1 cm直径针孔入射到箔上的等离子体辐射和中性粒子。使用AGEMA THV 900 LW红外摄像机测量箔上的所得温度分布，该红外摄像机具有136×272像素，帧速率为15 Hz，标称灵敏度为80 mK。使用线性插值方案将由120×160像素组成的箔和周围帧的图像重新采样到12×16像素。利用数值方法计算了薄膜上温度分布的空间和时间导数，并计算了薄膜上的入射功率密度。
A new type of infrared imaging bolometer, known as the infrared imaging video bolometer (IRVB) has been under development at the National Institute of Fusion Science (NIFS) over the last year. A prototype of this diagnostic has been designed and constructed at NIFS and installed on the large helical device (LHD) and successfully operated. This diagnostic utilizes a 66×90×0.001 mm gold foil mounted in a frame to detect the radiation and neutrals from the plasma which are incident on the foil through a 1 cm diameter pinhole. The resulting temperature distribution on the foil is measured using an AGEMA THV 900 LW infrared camera having 136×272 pixels with a frame rate of 15 Hz and a nominal sensitivity of 80 mK. An image of the foil and surrounding frame consisting of 120×160 pixels is resampled down to 12×16 pixels using a linear interpolation scheme. Using a numerical technique the spatial and temporal derivatives of the temperature distribution on the foil are calculated and the incident power density on ...