| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Observation of trapped and passing runaway electrons by infrared camera in the EAST tokamak |
| Yong-Kuan Zhang(张永宽)1,2, Rui-Jie Zhou(周瑞杰)1, Li-Qun Hu(胡立群)1,†, Mei-Wen Chen(陈美文)1,2, Yan Chao(晁燕)1,2, Jia-Yuan Zhang(张家源)1,2, and Pan Li(李磐)1,2 |
1 Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230026, China |
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Abstract In EAST, synchrotron radiation is emitted by runaway electrons in the infrared band, which can be observed by infrared cameras. This synchrotron radiation is mainly emitted by passing runaway electrons with tens of MeV energy. A common feature of radiation dominated by passing runaway electrons is that it is strongest on the high field side. However, the deeply trapped runaway electrons cannot reach the high field side in principle. Therefore, in this case, the high field side radiation is expected to be weak. This paper reports for the first time that the synchrotron radiation from trapped runaway electrons dominates that from passing runaway electrons and is identifiable in an image. Although the synchrotron radiation dominated by trapped runaway electrons can be observed in experiment, the proportion of trapped runaway electrons is very low.
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Received: 09 October 2020
Revised: 17 December 2020
Accepted manuscript online: 30 December 2020
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PACS:
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52.70.Nc
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(Particle measurements)
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52.25.Os
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(Emission, absorption, and scattering of electromagnetic radiation ?)
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52.35.Hr
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(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11775263) and the National Magnetic Confinement Fusion Energy Research Project of China (Grant No. 2015GB111003). |
Corresponding Authors:
Li-Qun Hu
E-mail: lqhu@ipp.ac.cn
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Cite this article:
Yong-Kuan Zhang(张永宽), Rui-Jie Zhou(周瑞杰), Li-Qun Hu(胡立群), Mei-Wen Chen(陈美文), Yan Chao(晁燕), Jia-Yuan Zhang(张家源), and Pan Li(李磐) Observation of trapped and passing runaway electrons by infrared camera in the EAST tokamak 2021 Chin. Phys. B 30 055206
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[1] Dreicer H 1959 Phys. Rev. 115 238
[2] Hoppe M, Embréus O, Tinguely R A, et al. 2018 Nuclear Fusion 58 026032
[3] Paz-Soldan C, Cooper C M, Aleynikov P, et al. 2017 Phys. Rev. Lett. 118 255002
[4] Zhou R J, Hu L Q, Zhang Y, et al. 2017 Nuclear Fusion 57 114002
[5] Boozer A H 2017 Nuclear Fusion 57 056018
[6] Schwinger J 1949 Phys. Rev. 75 1912
[7] Jaspers R, Lopes Cardozo N J, Donne A J H, et al. 2001 Rev. Sci Instrum. 72 466
[8] Xiao M, Zhou R J, Hu L Q, et al. 2017 Phys. Plasmas 24 124504
[9] Zhang Y K, Zhou R J, Hu L Q, et al. 2018 Chin. Phys. B 27 055206
[10] Zhou R J, Pankratov I M, Hu L Q, et al. 2014 Phys. Plasmas 21 063302
[11] del-Castillo-Negrete D, Carbajal L, Spong D, et al. 2018 Phys. Plasmas 25 056104
[12] Nilsson E, Decker J, Peysson Y, et al. 2015 Plasma Phys. Control. Fusion 57 095006
[13] Hesslow L, Embréus O, Stahl A, et al. 2017 Phys. Rev. Lett. 118 255001
[14] Liu C, Shi L, Hirvijoki E, et al. 2018 Nuclear Fusion 58 096030
[15] Shi Y, Fu J, Li J, et al. 2010 Rev. Sci. Instrum. 81 033506
[16] Cheon M, Kim J, An Y, et al. 2016 Nuclear Fusion 56 126004
[17] Cheon M, Seo D and Kim J 2018 Nuclear Fusion 58 046020
[18] England A C, Chen Z Y, Seo D C, et al. 2013 Plasma Sci. Technol. 15 119
[19] Yu J H, Hollmann E M, Commaux N, et al. 2013 Phys. Plasmas 20 042113
[20] Hoppe M, Embreus O, Paz-Soldan C, et al. 2018 Nuclear Fusion 58 082001
[21] Paz-Soldan C, Cooper C M, Aleynikov P, et al. 2018 Phys. Plasmas 25 056105
[22] Hollmann E M, Parks P B, Commaux N, et al. 2015 Phys. Plasmas 22 056108
[23] Pankratov I M 1996 Plasma Phys. Rep. 22 535
[24] Abdullaev S S, Finken K H and Forster M 2012 Phys. Plasmas 19 072502
[25] Zhou R J, Hu L Q, Li E Z, et al. 2013 Plasma Physics and Control. Fusion 55 055006
[26] Guan X, Qin H and Fisch N J 2010 Phys. Plasmas 17 092502
[27] Martin-Solis J R, Alvarez J D, Sánchez R et al. 1998 Phys. Plasmas 5 2370
[28] Martin-Solis J R, Esposito B, Sanchez R et al. 1999 Phys. Plasmas 6 238
[29] Spong D A, Heidbrink W W, Paz-Soldan C, et al. 2018 Phys. Rev. Lett. 120 155002 |
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