The Calibration of High-Speed Camera Imaging System for ELMs Observation on EAST Tokamak

FU Chao (付超); ZHONG Fangchuan (钟方川); HU Liqun (胡立群); YANG Jianhua (杨建华); YANG Zhendong (仰振东); GAN Kaifu (甘开福); ZHANG Bin (张斌); EAST Team

doi:10.1088/1009-0630/18/9/02

Plasma Science and Technology > 2016 > 18(9): 884-889. > DOI: 10.1088/1009-0630/18/9/02

FU Chao (付超), ZHONG Fangchuan (钟方川), HU Liqun (胡立群), YANG Jianhua (杨建华), YANG Zhendong (仰振东), GAN Kaifu (甘开福), ZHANG Bin (张斌), EAST Team. The Calibration of High-Speed Camera Imaging System for ELMs Observation on EAST Tokamak[J]. Plasma Science and Technology, 2016, 18(9): 884-889. DOI: 10.1088/1009-0630/18/9/02

Citation:

PDF (850 KB)

The Calibration of High-Speed Camera Imaging System for ELMs Observation on EAST Tokamak

1 College of Science, Donghua University, Shanghai 201620, China 2 Member of Magnetic Confinement Fusion Research Center, Ministry of Education, Shanghai 201620, China 3 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Funds: supported by National Natural Science Foundation of China (No. 11275047), the National Magnetic Confinement Fusion Science Program of China (No. 2013GB102000)

More Information

Received Date: December 03, 2015

Graphical Abstract

Abstract

Abstract

A tangential fast visible camera has been set up in EAST tokamak for the study of edge MHD instabilities such as ELM. To determine the 3-D information from CCD images, Tsai’s two-stage technique was utilized to calibrate the high-speed camera imaging system for ELM study. By applying tiles of the passive stabilizers in the tokamak device as the calibration pattern, transformation parameters for transforming from a 3-D world coordinate system to a 2-D image coordinate system were obtained, including the rotation matrix, the translation vector, the focal length and the lens distortion. The calibration errors were estimated and the results indicate the reliability of the method used for the camera imaging system. Through the calibration, some information about ELM filaments, such as positions and velocities were obtained from images of H-mode CCD videos.
- CCD,
- calibration,
- H-mode,
- ELM,
- filamentary structure,
- high-speed camera

FullText(HTML)

References (0)

[1]	Rongjing DENG, Tingfeng MING, Bang LI, Qiqi SHI, Shanwei HOU, Shuqi YANG, Xiaoju LIU, Shaocheng LIU, Guoqiang LI, Xiang GAO, Yasuhiro SUZUKI, Yunfeng LIANG. VUV imaging of type-I ELM filamentary structures and their temporal characteristics on EAST[J]. Plasma Science and Technology, 2024, 26(11): 114002. DOI: 10.1088/2058-6272/ad621c
[2]	Luying NIU(牛璐莹), Hongrui CAO (曹宏睿), Kun XU(徐坤), Liqun HU(胡立群). Neutronic analysis of ITER radial x-ray camera[J]. Plasma Science and Technology, 2019, 21(2): 25601-025601. DOI: 10.1088/2058-6272/aaeba5
[3]	Dianlin ZHENG (郑典麟), Kai ZHANG (张凯), Zhengying CUI (崔正英), Ping SUN (孙平), Chunfeng DONG (董春凤), Ping LU (卢平), Bingzhong FU (傅炳忠), Zetian LIU (刘泽田), Zhongbing SHI (石中兵), Qingwei YANG (杨青巍). High-speed VUV spectroscopy for edge impurity line emission measurements in HL-2A tokamak[J]. Plasma Science and Technology, 2018, 20(10): 105103. DOI: 10.1088/2058-6272/aacf3d
[4]	Nan ZHAO (赵楠), Ning YAN (颜宁), Guosheng XU (徐国盛), Zhengxiong WANG (王正汹), Ran CHEN (陈冉), Huiqian WANG (汪惠乾), Liang WANG (王亮), Siye DING (丁斯晔), Linming SHAO (邵林明), Liang CHEN (陈良), Guanghai HU (胡广海), Wei ZHANG (张炜). The observation of small ELM post-cursor mode in EAST[J]. Plasma Science and Technology, 2018, 20(2): 24007-024007. DOI: 10.1088/2058-6272/aa9bd8
[5]	WU Yifei (吴益飞), REN Zhigang (任志刚), FENG Ying (冯英), LI Mei (李美), ZHANG Hantian (张含天). Analysis of Fault Arc in High-Speed Switch Applied in Hybrid Circuit Breaker[J]. Plasma Science and Technology, 2016, 18(3): 299-304. DOI: 10.1088/1009-0630/18/3/14
[6]	WANG Lei(王磊), HUANG Yiyun(黄懿赟), ZHAO Yanping(赵燕平), ZHANG Jian(张健), YANG Lei(杨磊), GUO Wenjun(郭文军). Structure Design and Analysis of High-Voltage Power Supply for ECRH[J]. Plasma Science and Technology, 2014, 16(11): 1079-1082. DOI: 10.1088/1009-0630/16/11/15
[7]	ZHANG Shanwen(张善文), SONG Yuntao(宋云涛), WANG Zhongwei(王忠伟), JI Xiang(戢翔), E. DALY, M. KALISH, LU Su(卢速), DU Shuangsong(杜双松), LIU Xufeng(刘旭峰), FENG Changle(冯昌乐), YANG Hong(杨洪), WANG Songke(王松可). Design of Tokamak ELM Coil Support in High Nuclear Heat Environment[J]. Plasma Science and Technology, 2014, 16(3): 300-304. DOI: 10.1088/1009-0630/16/3/23
[8]	MING Tingfeng (明廷凤), Satoshi OHDACHI, Yasuhiro SUZUKI, LHD Experiment Group. Estimate of the Deposition Profile of Carbon Pellets Using a High-Speed VUV Imaging System in the LHD[J]. Plasma Science and Technology, 2013, 15(12): 1178-1184. DOI: 10.1088/1009-0630/15/12/03
[9]	CAO Hongrui (曹宏睿), LI Shiping (李世平), XU Xiufeng (徐修峰), Yuan Guoliang (袁国梁), YANG Qingwei(杨青巍), YIN Zejie (阴泽杰). A High-Speed Baseline Restorer for Neutron Flux Detection in ITER[J]. Plasma Science and Technology, 2012, 14(11): 1008-1010. DOI: 10.1088/1009-0630/14/11/09
[10]	Yu Beibei (于蓓蓓), Zhu Lihua (竺礼华), He Chuangye (贺创业), Wu Xiaoguang (吴晓光), Zheng Yun (郑云), Li Guangsheng (李广生), Wang Lielin (王烈林), Yao Shunhe (姚顺和), Zhang Biao (张彪), Xu Chuan (徐川), Hao Xin, et al. High Spin Structure in ¹⁰⁶Pd[J]. Plasma Science and Technology, 2012, 14(6): 531-533. DOI: 10.1088/1009-0630/14/6/22