Detection of Internal Transport Barrier in the T-10 Tokamak Using Thomson Scattering Diagnostics

IF 0.9 4区 物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS Plasma Physics Reports Pub Date : 2024-04-16 DOI:10.1134/S1063780X23602080
G. M. Asadulin, N. A. Kirneva, I. S. Bel’bas, A. V. Gorshkov, D. S. Panfilov, S. V. Krylov, A. P. Nemets, D. S. Sergeev, N. A. Solov’ev
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Abstract

At the T-10 tokamak, the Thomson scattering diagnostics was upgraded in 2016. The new system is based on the Nd:YAG laser with the pulse repetition frequency of 100 Hz; the measurements can be performed every 10 ms during the entire plasma discharge at the spatial resolution of up to 5 mm. Using the upgraded diagnostics, the electron temperature measurements were performed during experimental campaigns of the T-10 tokamak in 2016−2018. In the regimes with the electron cyclotron resonance heating, it was demonstrated that the regions with increased temperature gradients form in the plasma, which was interpreted as the formation of internal transport barrier. The ASTRA-code-based simulations of the current profile time evolution made it possible to correlate the positions of the barrier and the rational surface q = 1.

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利用汤姆逊散射诊断探测 T-10 托卡马克的内部传输障碍
摘要2016年,T-10托卡马克对汤姆逊散射诊断系统进行了升级。新系统基于脉冲重复频率为100赫兹的掺钕钇钕石榴石(Nd:YAG)激光器;可在整个等离子体放电过程中每10毫秒进行一次测量,空间分辨率可达5毫米。在2016-2018年的T-10托卡马克实验活动中,使用升级后的诊断仪进行了电子温度测量。在电子回旋共振加热的情况下,等离子体中形成了温度梯度增加的区域,这被解释为内部传输障碍的形成。基于ASTRA代码的电流剖面时间演化模拟使我们有可能将屏障的位置与合理表面q = 1相关联。
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来源期刊
Plasma Physics Reports
Plasma Physics Reports 物理-物理:流体与等离子体
CiteScore
1.90
自引率
36.40%
发文量
104
审稿时长
4-8 weeks
期刊介绍: Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.
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