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边缘和芯部等离子体的同时控制对优化托卡马克等离子体性能是重要的。边缘等离子体密度、温度和空间电位等通常采用朗缪尔静电探针测量,而旋转速度可用马赫探针测量。好的加料技术对于获得高性能等离子体也很重要,在HL-1M装置上已开展了8发弹丸注入和分子束注入(MBI)加料实验,它能使等离子体产生中空的温度和电流密度分布,并容易获得高密度和良好的约束。本文主要介绍在低杂波电流驱动(LHCD)、多发弹丸注入和MBI三种典型放电中边缘等离子体参数的测量结果。
Simultaneous control of the edge and core plasmas is important to optimize the performance of the tokamak plasma. Edge plasma density, temperature and space potential are usually measured using Langmuir electrostatic probes, while the rotational speed can be measured with Mach probes. A good dosing technique is also important for obtaining high-performance plasmas. Eight rounds of projectile injection and molecular beam injection (MBI) dosing experiments have been conducted on the HL-1M device, which allows the plasma to produce a hollow temperature and current density profile , And easy access to high density and good constraints. This paper mainly introduces the measurement results of edge plasma parameters in three typical discharges: low clutter current drive (LHCD), multiple projectile injection and MBI.