Development and test of the beam emission spectroscopy diagnostic based on neutral beam injection on HL-2A tokamak

doi:10.16568/j.0254-6086.202003002

NUCLEAR FUSION AND PLASMA PHYSICS ›› 2020, Vol. 40 ›› Issue (3): 200-207.DOI: 10.16568/j.0254-6086.202003002

• Plasma Physics • Previous Articles Next Articles

Development and test of the beam emission spectroscopy diagnostic based on neutral beam injection on HL-2A tokamak

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

(1. School of Physics, University of Science and Technology of China, Hefei 230026; 2. Southwestern Institute of Physics, Chengdu 610041)

Received:2019-04-04 Revised:2020-04-23 Online:2020-09-15 Published:2020-09-16

HL-2A装置中性束发射光谱诊断系统的研制与测试

吴一帆1, 2，余羿1, 2，柯锐2，许敏2，聂林2，吴婷2，孙爱萍2，兰涛1，袁博达1, 2，刘灏1, 2，龚少博1, 2，龙婷2，段旭如2，叶民友1，HL-2A团队2

(1. 中国科学技术大学物理学院，合肥 230026；2. 核工业西南物理研究院，成都 610041)

作者简介:吴一帆(1991-)，男，安徽池州人，博士研究生，从事等离子体物理诊断及实验研究。
基金资助:
国家重点研发计划专项(2017YFE0300405)；国家磁约束核聚变能发展研究专项(2015GB120002，2015GB104000)；国家自然科学基金(11875124，U1867222，11575055，11705052)

Abstract

Abstract: A 32-channels beam emission spectroscopy (BES) diagnostic system is developed and tested on HL-2A tokamak, which enables the 2D measurements of the long wavelength () electron density fluctuation with both high time and spatial resolutions () in a 2D field zone from radial position r=12~44cm and poloidal position -7.5~+7.5cm. The diagnostic consists of the sets of asymmetric lenses in the vacuum, fibers, high-efficiency detector modules and attached cooler and vacuum pump. In the low frequency (f<100kHz), the photon noise makes the main contribution to the noise level of the whole system, while the e-noise catches the similar level with the photon noise in the higher frequency. During the typical discharge of HL-2A, the signal to noise ratio (SNR) of the whole system is above 3 for the turbulence below 200kHz frequency.

Key words: HL-2A tokamak, Beam emission spectroscopy, Electron density fluctuation, 2D turbulence measurement

摘要： 在HL-2A装置上完成了一套32通道束发射诊断系统(BES)，可对径向r=12~44cm, 极向-7.5~+7.5cm二维空间范围内的长波长()电子密度扰动信息进行测量，其时间分辨率达到0.5ms，空间分辨率1~2cm。系统由内置于真空室的非对称镜头组、传输光纤、高性能探测器模块以及辅助的冷却和真空设备构成。系统的噪声在低频时(f<100kHz)主要由散粒噪声贡献，在较高频率时由散粒噪声和e噪声共同决定。在典型的HL-2A装置放电模式中，对于200kHz以下的扰动，该系统的信噪比(SNR)均大于3。

关键词: HL-2A装置, 束发射光谱, 密度涨落, 二维湍流测量

CLC Number:

TL65+1

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.

吴一帆1, 2，余羿1, 2，柯锐2，许敏2，聂林2，吴婷2，孙爱萍2，兰涛1，袁博达1, 2，刘灏1, 2，龚少博1, 2，龙婷2，段旭如2，叶民友1，HL-2A团队2. HL-2A装置中性束发射光谱诊断系统的研制与测试 [J]. 核聚变与等离子体物理, 2020, 40(3): 200-207.

References

[1] Aymar R, Barabaschi P, Shimomura Y. The ITER design [J]. Plasma Phys. Contr. Fusion, 2002, 44(5): 519. [2] Wan Y X, Li J G, Liu Y, et al. Overview of the present progress and activities on the CFETR [J]. Nucl. Fusion, 2017, 57(10): 102009. [3] Xu M, Tynan G R, Diamond P H, et al. Frequency- resolved nonlinear turbulent energy transfer into zonal flows in strongly heated L-mode plasmas in the HL-2A tokamak [J]. Phys. Rev. Lett., 2012, 108(24): 245001. [4] Yan Z, Xu M, Diamond P H, et al. Intrinsic rotation from a residual stress at the boundary of a cylindrical laboratory plasma [J]. Phys. Rev. Lett., 2010, 104(6): 065002. [5] Xu M, Tynan G R, Holland C, et al. Study of nonlinear spectral energy transfer in frequency domain [J]. Phys. Plasmas, 2009, 16(4): 5195. [6] McKee G, Ashley R, Durst R, et al. The beam emission spectroscopy diagnostic on the DIII-D tokamak [J]. Rev. Sci. Instrum., 1999, 70(1): 913?916. [7] Smith D R, Feder H, Feder R, et al. Overview of the beam emission spectroscopy diagnostic system on the national spherical torus experiment [J]. Rev. Sci. Instrum., 2010, 81(10): 10D717. [8] Nam Y U, Zoletnik S, Lampert M, et al. Analysis of edge density fluctuation measured by trial KSTAR beam emission spectroscopy system [J]. Rev. Sci. Instrum., 2012, 83(10): 10D531. [9] Wang H J, Yu Y, Chen R, et al. Development of beam emission spectroscopy diagnostic on EAST [J]. Rev. Sci. Instrum., 2017, 88(8): 083505. [10] Hutchinson I H. Excited-state populations in neutral beam emission [J]. Plasma Phys. Contr. Fusion, 2001, 44(1): 71. [11] Durst R D, Fonck R J, Cosby G, et al. Density fluctuation measurements via beam emission spectroscopy (invited) [J]. Rev. Sci. Instrum., 1992, 63(10): 4907.[12] J akubowski M, Fonck R, Kim J S, et al. Application of wavelet spectral analysis to plasma fluctuation measurements using beam emission spectroscopy [J]. Rev. Sci. Instrum., 1999, 70(1): 874. [13] McKee G R, Fenzi C, Fonck R J, et al. Turbulence imaging and applications using beam emission spectroscopy on DIII-D [J]. Rev. Sci. Instrum., 2003, 74(3): 2014?2019. [14] Wu Y F, Yu Y, Ke R, et al. Simulation of neutral beam attenuation and its influence to beam emission spectroscopy diagnostic on HL-2A tokamak [J]. Journal of Instrumentation, 2018, 13(10): P10026. [15] Dunai D, Zoletnik S, Sárk?zi J, et al. Avalanche photodiode based detector for beam emission spectroscopy [J]. Rev. Sci. Instrum., 2010, 81(10): 103503. [16] Schoenbeck N L, Ellington S D, Fonck R J, et al. Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX [J]. Rev. Sci. Instrum., 2010, 81(10): 10D718. [17] Yu Y, Gong S B, Xu M, et al. Calibration of phase contrast imaging on HL-2A tokamak [J]. Journal of Instrumentation, 2017, 12(10): C10005.

Development and test of the beam emission spectroscopy diagnostic based on neutral beam injection on HL-2A tokamak

HL-2A装置中性束发射光谱诊断系统的研制与测试

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Development and test of the beam emission spectroscopy diagnostic based on neutral beam injection on HL-2A tokamak

HL-2A装置中性束发射光谱 诊断系统的研制与测试

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HL-2A装置中性束发射光谱诊断系统的研制与测试