用RHF在HT-6B托卡马克上研究等离子体的约束和锯齿振荡行为

给出了HT-6B托卡马克上的共振螺旋场(RHF)对等离子体的约束和锯齿振荡行为的影响的实验结果。RHF使电子热导减小、电子温度分布变宽、等离子体密度增加并增强了杂质辐射,同时使锯齿振荡增强(包括锯齿幅度、周期、上升率及反相半径)和m=2、3、4的MHD不稳定性被抑制。实验结果表明RHF使放电进入一个新的放电状态。     

Design of the Pumping Stations and the Gas Puffing Systems for the Superconducting Tokamak HT-7U

1. IntroductionHT-7U is an upgrade device for the superconducting' tokamak HT--7 in Hefei, C,hina." It will be t.helargest TOkamak in China, with a major radius of l.7m and a minor cross section of 0.6 m x 0.4 m. Thetypical plasma pulse length will be 1000 s, and thetoroidal superconducting magnetic field on plasmaaxis will be 3.5 T [1].The parameters of the vacuum system of TokamakTore Supra in France and Tokamak JET in the U.Kare taken as our design references. The volume ofJET tor…     

The Realization of Low Loop Voltage Start-up of HT-7 Tokamak Discharge with the Assistance of Lower Hybrid Wave

1. IntroductiollHT--7 tokamak [1] is a mlddle--scale superconduct-ing tokamak device including a varuum vessel witha najor radius of 1.22 m and a mlnor radius of0.3 m. Its toroidal field can reach 2.5 tesla andthe magnetic flux supplied by its heating field isabout l.7 volt-second(Vs). In general Ohmic dis-charge condltions, the main plasma parameters canreach ne ~ (1 -- 5) x 10"/cm', Te ~ l keV andL ~ 0.8 keV. The conventional method for tokamakstart-up ls to lonize the working gas and sus…