Upgrade of EAST plasma control system for steady-state advanced operation
Upgrade of EAST plasma control system for steady-state advanced operation
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DOI：
10.1016/j.fusengdes.2018.02.079
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发表时间：
2018-04
影响因子：
1.7
通讯作者：
Q. Yuan;J. Tang;B. Penaflor;Robert D. Johnson;K. Wu;D. Piglowski;Ruili Zhang;B. Xiao;W. Ch
中科院分区：
文献类型：
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作者：
Q. Yuan;J. Tang;B. Penaflor;Robert D. Johnson;K. Wu;D. Piglowski;Ruili Zhang;B. Xiao;W. Ch
为实现EAST稳态先进运行的主要目标，EAST等离子体控制系统（PCS）不断发展和升级。根据计算机多核处理器技术的发展，将四节点PCS机群简化为一台主机和一个真实的实时计算节点结构。此外，集群内部数据交换网络Myrinet被用于机器间的高速10千兆位以太网和用于多核通信的共享内存技术所取代。这种新的升级系统被称为独立PCS，它具有更少的硬件，但更有效，更容易备份。在升级后的新系统中，利用MDSplus的数据分段技术实现了真实的时间归档模式，在不增加计算机内存和不降低稳态运行时数据保存频率的情况下，实现了数据分段保存。为了降低偏滤器靶面的热流密度和表面温度，将偏滤器惰性气体吹气和中平面超声分子束注入（SMBI）相结合的等离子体辐射控制集成到PCS中。本文讨论了控制设计和实验结果。
The EAST plasma control system (PCS) undergoes continuous development and upgrade to achieve major goals of EAST steady-state advanced operation. According to the development of computer multi-core processor technology, the four nodes PCS cluster was simplified to one host and one real time computing node structure. Besides, the cluster internal data exchange network Myrinet was replaced by high speed 10 Giga-bit Ethernet for inter machine and shared memory technology for multi-core communication. Such new upgraded system is called standalone PCS which has less hardware but be more efficient and easy to backup. In the new upgraded system, a real time archiving mode using data segment technology of MDSplus was realized which provided the possibility to save all data in segments without increasing the computer memory or reducing the saving frequency in steady–state operation. To reduce the heat flux and surface temperature on the divertor targets, plasma radiation control using divertor inert gas puffing and mid-plane supersonic molecular beam injection (SMBI) was integrated in PCS. In this paper, the control design and experiment results are discussed.