Inversion of emissivity and flow velocity measured by coherence imaging spectroscopy diagnostic with Tikhonov method

doi:10.16568/j.0254-6086.2022s1011

Nuclear Fusion and Plasma Physics ›› 2022, Vol. 42 ›› Issue (s1): 158-163.DOI: 10.16568/j.0254-6086.2022s1011

• Plasma Physics • Previous Articles Next Articles

Inversion of emissivity and flow velocity measured by coherence imaging spectroscopy diagnostic with Tikhonov method

LI Bing-li, WANG Tian-bo, NIE Lin, LONG Ting, ZHANG Xiao-yi, WANG Hao,ZHANG Xiao-long, JIAO Shao-dong, QING Wan-jun, TIAN Ye, PAN Yuan

(1. Southwestern Institute of Physics, Chengdu 610041; 2. International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074)

Received:2021-07-21 Revised:2022-01-18 Online:2022-05-15 Published:2022-05-23

Tikhonov算法在相干成像辐射率和流速反演中的应用

李兵利1，王天博*1，聂林1，龙婷1，张霄翼2，王灏2，张晓龙2，焦少东2，青万钧2，田野2，潘垣2

(1. 核工业西南物理研究院，成都 610041； 2. 华中科技大学电气与电子工程学院，磁约束聚变与等离子体国际合作联合实验室，武汉 430074)

作者简介:李兵利(1991-)，男，安徽人，硕士，主要从事相干成像诊断及反演工作。
基金资助:
国家磁约束核聚变能发展研究专项(2018YFE0309103，2017YFE0301201，2018YFE0303100)；国家自然科学基金(51821005)

Abstract

Abstract: Inversion of emissivity measured by coherence imaging spectroscopy diagnostic (CIS) in HL-2A tokamak with Tikhonov algorithm is introduced. After correcting the problems such as visual string deviation caused by camera positioning in HL-2A tokamak,and then the inversion of emissivity and velocity in J-TEXT tokamak is carried out with Tikhonov algorithm.

Key words: Tikhonov, Canoncical inversion, HL-2A tokamak, J-TEXT tokamak

摘要： 介绍了Tikhonov算法对HL-2A装置辐射率反演的应用，在修正了HL-2A装置相机定位造成的视弦偏移等问题后，采用Tikhonov算法获得了J-TEXT装置的辐射率和流速的反演图像。

关键词: Tikhonov算法, 正则法反演, HL-2A装置, J-TEXT装置

CLC Number:

O536

LI Bing-li, WANG Tian-bo, NIE Lin, LONG Ting, ZHANG Xiao-yi, WANG Hao, ZHANG Xiao-long, JIAO Shao-dong, QING Wan-jun, TIAN Ye, PAN Yuan. Inversion of emissivity and flow velocity measured by coherence imaging spectroscopy diagnostic with Tikhonov method[J]. Nuclear Fusion and Plasma Physics, 2022, 42(s1): 158-163.

李兵利, 王天博, 聂林, 龙婷, 张霄翼, 王灏, 张晓龙, 焦少东, 青万钧, 田野, 潘垣. Tikhonov算法在相干成像辐射率和流速反演中的应用[J]. 核聚变与等离子体物理, 2022, 42(s1): 158-163.

References

[1] Labombard B, Rice J E, Hubbard A E, et al. Transport- driven scrape-off-layer flows and the boundary conditions imposed at the magnetic separatrix in a tokamak plasma [J]. Nucl. Fusion, 2004, 44(10): 1047-1066.

[2] Elder J D, Stangeby P C, Whyte D G, et al. OEDGE modeling of 13C deposition in the inner divertor of DIII-D [J]. J. Nucl. Mater., 2005, 337-339(1): 79-83.

[3] Katramados I, Fishpool G, Fursdon M, et al. MAST upgrade closed pumped divertor design and analysis [J]. Fusion Eng. Des., 2011, 86: 1595-1598.

[4] Soukhanovskii V A, Bell R E, Diallo A, et al. Snowflake divertor configuration studies in national spherical torus experiment [J]. Phys. Plasmas, 2012, 19: 082504.

[5] Long T, Allcock J S, Nie L, et al. Doppler coherence imaging of scrape-off-layer impurity flows in the HL-2A tokamak [J]. Rev. Sci. Instrum., 2020, 91(8): 083504.

[6] Howard J, Michael C, Glass F, et al. Time-resolved two- dimensional plasma spectroscopy using coherence- imaging techniques [J]. Plasma Phys. Contr. Fusion, 2003, 45(7): 1143.

[7] Howard J, Diallo A, Creese M, et al. Doppler coherence imaging and tomography of flows in tokamak plasmas [J]. Rev. Sci. Instrum., 2010, 81(10): 821.

[8] Ingesson L C, Alper B, Peterson B J, et al. Chapter 7: Tomography diagnostics: Bolometry and soft-X-ray detection [J]. Fusion Science and Technology, 2008, 53(2): 528-576.

[9] Anton M, Weisen H, Dutch M J, et al. X-ray tomography on the TCV tokamak [J]. Plasma Phys. Contr. Fusion, 1996, 38: 1849.

[10] Ingesson L C, Alper B, Chen H, et al. Soft X ray tomography during ELMs and impurity injection in JET [J]. Nucl. Fusion, 1998, 38(11): 1675-1694.

[11] Press W H, Teukolsky S A, Vetterling W T, et al. Numerical recipes in Fortran 90: the art of parallel scientific computing, volume 2 of Fortran numerical recipes [M]. Cambridge, ISBN, 1996. 572.

[12] Li B L, Wang T B, Nie L, et al. Tomography of emissivity for Doppler coherence imaging spectroscopy diagnostic on HL-2A [J]. Plasma Science and Technology, 2021, 23(9): 095104.

[13] Ding Y, Chen Z, Chen Z, et al. Overview of the J-TEXT progress on RMP and disruption physics [J]. Plasma Science and Technology, 2018, 20(12): 004.

[14] Odstrčil T, Pütterich T, Odstrčil M, et al. Optimized tomography methods for plasma emissivity reconstruction at the ASDEX Upgrade tokamak [J]. Rev. Sci. Instrum., 2016, 87(12): 123505.

[15] Xia M H, Chen Z P, Deng H P, et al. A visible light high- speed imaging system and tomographic reconstruction of plasma emissivity on the J-TEXT tokamak [J]. Fusion Eng. Des., 2019, 146: 578-581.

Inversion of emissivity and flow velocity measured by coherence imaging spectroscopy diagnostic with Tikhonov method

Tikhonov算法在相干成像辐射率和流速反演中的应用

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	SHAO Li-hua, LIU Ze-kang, LI Zai-xin, CAI Lai-zhong . Influence of Soret and Dufour effect coupling on double diffusion of deuterium concentration and temperature in HL-2A diverter target plate [J]. Nuclear Fusion and Plasma Physics, 2024, 44(3): 367-372.
[2]	SHEN Yong, DONG Jia-qi, LI Jia, HAN Ming-kun, SHEN Yu-hang, ZHANG Xiao-ran, LIU Jia-yan, WANG Zhan-hui, LI Ji-quan . Preliminary study on low frequency drift mode database and its machine learning on the HL-2A tokamak [J]. Nuclear Fusion and Plasma Physics, 2024, 44(2): 141-148.
[3]	ZHU Xiao-bo, XIA Fan, YANG Zong-yu, LIU Feng-wu, GONG Xin-wen, LIU Yu-hang, ZHANG Yi, SHI Pei-wan, CHEN Wei, YU Li-ming, CHEN Zheng-wei, ZHONG Wu-lü. Research on HL-2A fishbone mode recognition algorithm based on deep learning [J]. Nuclear Fusion and Plasma Physics, 2024, 44(2): 149-156.
[4]	GUAN Jing-yu , KE Rui , BAO Jian , CHEN Wei , YE Min-you. Simulation of toroidal Alfvén eigenmode instability in the HL-2A tokamak [J]. Nuclear Fusion and Plasma Physics, 2023, 43(4): 436-443.
[5]	LONG Ting, Diamond P H, KE Rui, HONG Rong-jie, XU Min, NIE Lin, WANG Zhan-hui, LI Bo, GAO Jin-ming, HL-M Team. Experimental studies of edge shear flow and poloidal residual stress in proximity to the density limit of HL-2A tokamak [J]. Nuclear Fusion and Plasma Physics, 2022, 42(s1): 152-157.
[6]	LIANG Jia-he, LIU Song-fen, WANG Hong-peng, DU Yue, WANG Zhan-hui, CHEN Yi-hang, XU Min, XIA Fan, YANG Zong-yu, ZHONG Wu-lü. H mode period recognition in HL-2A tokamak based on convolutional neural network [J]. Nuclear Fusion and Plasma Physics, 2022, 42(s1): 164-169.
[7]	WANG Jie-qiong, LU Bo, HUANG Mei, BAI Xing-yu . A new method for remote control of filament power supply for the LHCD system on HL-2A tokamak [J]. Nuclear Fusion and Plasma Physics, 2022, 42(4): 383-387.
[8]	FU Xian-fei, YANG Bin, , WANG Shi-qing, . Modeling and control of HL-2A plasma horizontal displacement based on neural networks [J]. Nuclear Fusion and Plasma Physics, 2022, 42(2): 264-270.
[9]	SUN Hao-fang, SHI Pei-wan, CHEN Wei . Experimental observation and simulation verification of reverse shear Alfvén eigenmodes on HL-2A tokamak [J]. Nuclear Fusion and Plasma Physics, 2021, 41(1): 1-7.
[10]	HUANG Yao, XIA Fan, YANG Zong-yu, ZHONG Wu-lü, LIU Chun-hua . ELM real-time recognition research based on deep learning [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2020, 40(4): 300-308.
[11]	WU Yi-fan1, 2, YU Yi1, 2, KE Rui2, XU Min2, NIE Lin2, WU Ting2, SUN Ai-ping2, LAN Tao1, YUAN Bo-da1, 2, LIU Hao1, 2, GONG Shao-bo1, 2, LONG Ting2, DUAN Xu-ru2, YE Min-you1, HL-2A team2. Development and test of the beam emission spectroscopy diagnostic based on neutral beam injection on HL-2A tokamak [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2020, 40(3): 200-207.
[12]	XU Hong-bing1, CAO Zeng1, CHEN Cheng-yuan1, ZHU Gen-liang1, CAI Xiao1, LIU Liang1, LI Yong-gao1, YANG Zeng-chen 1, ZHONG Yun-ke1, ZHANG Zan-wen2, LIU De-quan1. Preliminary experimental results of encapsuled pellet injection on the HL-2A tokamak [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2020, 40(2): 104-108.
[13]	ZHOU Xian-ming, LU Bo. Development of arc detector with large dynamic range and digital control [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2019, 39(3): 270-275.
[14]	WU Na, CHEN Shao-yong, TANG Chang-jian, SONG Xian-ming, YANG Ceng-chen, YU De-liang, XU Jian-qiang, HL-2A Team. Observation of edge localized mode mitigation with plasma vertical jogs in HL-2A tokamak [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2019, 39(2): 97-103.
[15]	XIA Fan, XU Yuan, LING Fei, YE Ji-fei, SONG Shao-dong, JI Xiao-quan, MA Rui, ZHOU Jian, SUN Teng-fei, YAN Long-wen. Tearing mode real time active control system [J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2018, 2(4): 394-401.