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Neutral Beam Injection control system (NBICS) is constructed to measure the plasma current, Magnet current, vacuum pressure, cryopump temperature, control water cooling, filament voltage, and power supply, etc. The NBICS, consisting mainly of a Programmable Logic Controller (PLC) subsystem, data acquisition and processing subsystem and cryopump and vacuum pressure monitoring subsystem, has successfully been used on a NBI device. In this article, the design of NBICS on HT-7 is discussed and each subsystem is described in particular.In addition, some experimental results are reported which are very important data for further research related to the HT-7 tokamak. 相似文献
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中性束注入器Tank充气特性对离子源放电的影响 总被引:4,自引:0,他引:4
利用对PV-10型压电阀定标实验,研究了中性束注入器Tank内补充气体的参数对离子源放电弧电流的影响,对比压电阀脉冲电源的脉宽和幅值,显示后者对Tank内补充气体量具有更显著的线性关系.据此进行的中性束注入器离子源放电实验结果表明,采用压电阀定标值计算获得的参数,可以稳定重复地获得最大放电脉宽达到400 ms的等离子体弧电流,为下一步向托卡马克装置注入高能中性粒子束奠定了应用基础. 相似文献
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Two sets of neutral beam injectors(NBI-1 and NBI-2) have been mounted on the EAST tokamak since 2014. NBI-1 and NBI-2 are co-direction and counter-direction, respectively. As with indepth physics and engineering study of EAST, the ability of long pulse beam injection should be required in the NBI system. For NBIs, the most important and difficult thing that should be overcome is heat removal capacity of heat loaded components for long-pulse beam extraction. In this article, the thermal state of the components of EAST NBI is investigated using water flow calorimetry and thermocouple temperatures. Results show that(1) operation parameters have an obvious influence on the heat deposited on the inner components of the beamline,(2) a suitable operation parameter can decrease the heat loading effectively and obtain longer beam pulse length, and(3) under the cooling water pressure of 0.25 MPa, the predicted maximum beam pulse length will be up to 260 s with 50 keV beam energy by a duty factor of 0.5. The results present that, in this regard, the EAST NBI-1 system has the ability of long-pulse beam injection. 相似文献
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A control model of gas supply system is introduced for ion source and an adaptive discrete-time control algorithm to regulate the hydrogen injection. A real-time feedback control system (RFCS) is designed to control the gas supply for ion source based on the control model and the discrete-time control algorithm. The experimental results have proved that RFCS could regulate the gas supply smoothly, suppress the arc's abrupt over-current at the end of the ion source discharging, prolong the discharge pulse and stabilize the ion concentration. With RFCS, the ion source for neutral beam injection has reached its longest pulse with a length of 4.5 seconds in a stable status. 相似文献
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Parametrical effect on plasma discharge and beam extraction in the diagnosis neutral beam (DNB) system for HT-7 tokamak was studied experimentally. Useful results with an improved beam quality were obtained. 相似文献
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基于串级控制的电加热固体储能供热控制系统研究 总被引:1,自引:0,他引:1
电加热固体储能供热系统作为一种供热行业的新兴蓄热热源形式得到了大力发展。但电加热固体储能供热系统现在处于初步发展阶段,存在诸多问题。对电加热固体储能供热系统的运行原理进行了详细的阐述,并结合串级控制系统,提出了一套切实可行的控制策略,以控制方案为基础设计出了一套完整的控制系统,其中包括硬件系统及软件系统的设计。系统的主要功能包含了参数检测、运行控制以及故障报警,确保其高效稳定的运行。 相似文献
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设计了测量诊断中性束(DNB)束功率及束密度剖面的束功率测量方案,采用热电偶测量束线轰击功率测量靶板后靶面的温升信号,经热电偶信号调理器调制放大后,由数据采集卡采集到现场计算机中进行数据处理,以及功率大小和功率密度剖面分布的计算,计算值通过光纤链路传输到控制室终端计算机加以复现.实验证明,DNB束功率测量系统工作稳定可靠,实现了对束线轰击靶板后靶面温升的实时测量,和对束线功率大小及功率密度剖面的良好复现. 相似文献