Test of a High Throughput Detector on the X-ray Crystal Spectrometer of the EAST  

作　　者：吕波 石跃江 王福地 万宝年 Manfred BITTER Kenneth W. HILL Sang-gon LEE 李颖颖 符佳 张继宗 徐经翠 沈永才 

机构地区：[1]Institute of Plasma Physics, Chinese Academy of Sciences [2]WCI Center for Fusion Theory, National Fusion Research Institute,Daejeon 305-806, Korea [3]University of Science and Technology of China [4]Princeton Plasma Physics Laboratory,MS37-B332, Princeton, New Jersey 08543, USA [5]National Fusion Research Institute,52 Eoeun-Dong, Yusung-Gu, Taejeon 305-333, Korea

出　　处：《Plasma Science and Technology》2013年第2期97-100,共4页等离子体科学和技术（英文版）

基　　金：supported by National Magnetic Confinement Fusion Science Program of China (Nos. 2011GB101000, 2011GB107000, 2012GB101000 and 2013GB112004);National Natural Science Foundation of China (Nos. 10975155, 10990212 and 11175208);JSPS-NRF-NSFC A3 Foresight Program in the Field of Plasma Physics (No. 11261140328)

摘　　要：An attempt was made to improve the spatio-temporal resolution of the tangen- tial X-ray crystal spectrometer （XCS） on the Experimental Advanced Superconducting Tokamak （EAST） by evaluating experimentally the applicability of a novel X-ray photon detection tech- nology for measuring the satellite spectra of Ar XVII with a high counting rate. High-resolution experimental data on the profiles of ion temperature and plasma rotation velocity facilitate the studies of the mechanisms underlining important physical phenomena, such as plasma heating, L-H transition and momentum transport. Based on silicon diode array and single-photon counting technology, a relatively small area （83.8 x 33.5 mm~） two-dimensional detector was successfully in- stalled and tested in the recent EAST campaign. X-ray photon counting rate higher than 20 MHz was observed for the first time, and high quality satellite spectra were recorded for ion temperature and plasma rotation measurement, indicating that the new technology is suitable for the next-step high-resolution XCS on EAST, and the deployment of a detector array with a much larger X-ray sensing area is planned for better plasma coverage.An attempt was made to improve the spatio-temporal resolution of the tangen- tial X-ray crystal spectrometer （XCS） on the Experimental Advanced Superconducting Tokamak （EAST） by evaluating experimentally the applicability of a novel X-ray photon detection tech- nology for measuring the satellite spectra of Ar XVII with a high counting rate. High-resolution experimental data on the profiles of ion temperature and plasma rotation velocity facilitate the studies of the mechanisms underlining important physical phenomena, such as plasma heating, L-H transition and momentum transport. Based on silicon diode array and single-photon counting technology, a relatively small area （83.8 x 33.5 mm~） two-dimensional detector was successfully in- stalled and tested in the recent EAST campaign. X-ray photon counting rate higher than 20 MHz was observed for the first time, and high quality satellite spectra were recorded for ion temperature and plasma rotation measurement, indicating that the new technology is suitable for the next-step high-resolution XCS on EAST, and the deployment of a detector array with a much larger X-ray sensing area is planned for better plasma coverage.

关 键 词：X-ray crystal spectrometer high resolution ion temperature plasma rotation 

分 类 号：TL65[核科学技术—核技术及应用] TL817.1