Progress of the bolometer diagnostic system on EAST  

作　　者：Wen WEN Yanmin DUAN Shanshan PAN Yan CHAO Songtao MAO Jing QIAN Lingyi MENG Panjun TANG Shiyao LIN 文雯;段艳敏;潘姗姗;晁燕;毛松涛;钱静;孟令义;汤潘君;林士耀(Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China;University of Science and Technology of China,Hefei 230026,People’s Republic of China;College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,People’s Republic of China)

机构地区：[1]Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People’s Republic of China [2]University of Science and Technology of China,Hefei 230026,People’s Republic of China [3]College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,People’s Republic of China

出　　处：《Plasma Science and Technology》2024年第9期125-132,共8页等离子体科学和技术（英文版）

基　　金：supported by the National MCF Energy R&D Program of China(Nos.2022YFE03040003 and 2019YFE03010003).

摘　　要：Measurements of the total radiated power and its spatial distribution are crucial for fusion research.On the experimental advanced superconducting tokamak(EAST),both the metal foil resistive bolometer and the absolute extreme ultraviolet(AXUV)photodiodes have been used to quantify the radiated power.This article introduces the latest improvement of the bolometer diagnostic system on EAST.It also details the successful design and installation of new divertor AXUV cameras,which are dedicated to the investigation of divertor physics.The shielding components of the bolometer detector have been refined,and the article provides a detailed exposition of the double shielding structures that have been verified as effective in microwave shielding.Additionally,the changes in the radiated power distribution in the divertor region during the plasma detachment process are measured using the divertor AXUV camera.Finally,the radiated power measured by the AXUV detector and metal foil resistive bolometer are compared,and different detector performances are presented.

关 键 词：radiated power bolometer diagnostic microwave shielding plasma detachment sensitivity degradation 

分 类 号：TL612[核科学技术—核技术及应用]