A novel electromagnetic probe array(EMPA) diagnostic, which consists of a magnetic probe array and an electrostatic probe array, has recently been developed on EAST. The EMPA is fixed near the first wall at horizontal...A novel electromagnetic probe array(EMPA) diagnostic, which consists of a magnetic probe array and an electrostatic probe array, has recently been developed on EAST. The EMPA is fixed near the first wall at horizontal port P. The magnetic probe array of the EMPA consists of 24 identical magnetic probes, each of them capable of measuring toroidal, poloidal and radial magnetic fluctuations simultaneously, providing additional toroidal magnetic fluctuation measurements compared with the regular magnetic probes on EAST. With a higher sampling rate and self-resonant frequency, the EMPA magnetic probes can provide higher frequency magnetic fluctuation measurements. The magnetic probe array of the EMPA is composed of two parallel layers of magnetic probes with a radial distance of 63 mm, and each layer of magnetic probes is arranged in four poloidal rows and three toroidal columns. The compact arrangement of the EMPA magnetic probe array largely improves the toroidal mode number measurement ability from-8≤ n≤ 8 to-112≤ n≤ 112, and also improves the high poloidal wave number measurement ability of magnetic fluctuations compared with the regular high frequency magnetic probes on EAST. The electrostatic probe array of the EMPA consists of two sets of four-tip probes and a single-tip probe array with three poloidal rows and four toroidal columns. It complements the electrostatic parameter measurements behind the main limiter and near the first wall in EAST. The engineering details of the EMPA diagnostic, including the mechanical system, the electrical system, the acquisition and control system, and the effective area calibration, are presented. The preliminary applications of the EMPA in L-mode and H-mode discharges on EAST have demonstrated that the EMPA works well for providing information on the magnetic and electrostatic fluctuations and can contribute to deeper physical analysis in future EAST experiments.展开更多
为满足国家重大科学工程项目EAST核聚变试验装置、稳态强磁场试验装置及ITER国际重大合作项目等多项试验装置的工程及试验运行,在合肥科学岛建设完成了EAST.110 k V总容量为344.5 MV·A的变电站,拥有6台主变压器,是目前国内110 k V...为满足国家重大科学工程项目EAST核聚变试验装置、稳态强磁场试验装置及ITER国际重大合作项目等多项试验装置的工程及试验运行,在合肥科学岛建设完成了EAST.110 k V总容量为344.5 MV·A的变电站,拥有6台主变压器,是目前国内110 k V电压等级中容量最大的变电站。在对该变电站的负荷、设计情况进行介绍的基础上,分析了该变电站在大负荷试验运行时安全保障的措施,提出了从运行时间和空间上进行负荷分配优化,通过技术比较论证了其可靠性,并指出一些在运行中仍然存在的问题,对存在大容量冲击性试验负荷的变电站的设计建设提供了工程参考和借鉴价值。展开更多
基金supported by the National Magnetic Confinement Fusion Energy R&D Program of China (Nos. 2019YFE03030000 and 2022YFE03020004)National Natural Science Foundation of China (Nos. 12105187, 11905250 and 11975275)+1 种基金the China Postdoctoral Science Foundation (No. 2021M702245)the Users with Excellence Program of Hefei Science Center, CAS (No. 2021HSC-UE014)。
文摘A novel electromagnetic probe array(EMPA) diagnostic, which consists of a magnetic probe array and an electrostatic probe array, has recently been developed on EAST. The EMPA is fixed near the first wall at horizontal port P. The magnetic probe array of the EMPA consists of 24 identical magnetic probes, each of them capable of measuring toroidal, poloidal and radial magnetic fluctuations simultaneously, providing additional toroidal magnetic fluctuation measurements compared with the regular magnetic probes on EAST. With a higher sampling rate and self-resonant frequency, the EMPA magnetic probes can provide higher frequency magnetic fluctuation measurements. The magnetic probe array of the EMPA is composed of two parallel layers of magnetic probes with a radial distance of 63 mm, and each layer of magnetic probes is arranged in four poloidal rows and three toroidal columns. The compact arrangement of the EMPA magnetic probe array largely improves the toroidal mode number measurement ability from-8≤ n≤ 8 to-112≤ n≤ 112, and also improves the high poloidal wave number measurement ability of magnetic fluctuations compared with the regular high frequency magnetic probes on EAST. The electrostatic probe array of the EMPA consists of two sets of four-tip probes and a single-tip probe array with three poloidal rows and four toroidal columns. It complements the electrostatic parameter measurements behind the main limiter and near the first wall in EAST. The engineering details of the EMPA diagnostic, including the mechanical system, the electrical system, the acquisition and control system, and the effective area calibration, are presented. The preliminary applications of the EMPA in L-mode and H-mode discharges on EAST have demonstrated that the EMPA works well for providing information on the magnetic and electrostatic fluctuations and can contribute to deeper physical analysis in future EAST experiments.
文摘为满足国家重大科学工程项目EAST核聚变试验装置、稳态强磁场试验装置及ITER国际重大合作项目等多项试验装置的工程及试验运行,在合肥科学岛建设完成了EAST.110 k V总容量为344.5 MV·A的变电站,拥有6台主变压器,是目前国内110 k V电压等级中容量最大的变电站。在对该变电站的负荷、设计情况进行介绍的基础上,分析了该变电站在大负荷试验运行时安全保障的措施,提出了从运行时间和空间上进行负荷分配优化,通过技术比较论证了其可靠性,并指出一些在运行中仍然存在的问题,对存在大容量冲击性试验负荷的变电站的设计建设提供了工程参考和借鉴价值。
