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HT-7中性束诊断电源系统的计算机控制系统由PLC、工控机、逻辑控制和定时单元等组成。对起弧、束流引出等实验进行了研究。在多种参数下,通过调节弧压、进气量等观察了其对弧流的影响。初步实验结果表明,在高压35kV、弧流80A的情况下,束电流可以达到3.6A,引出的中性束流功率可以稳定地达到50kW以上。 相似文献
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Three new cadmium or zinc arenedisulfonate complexes [Zn(bpp)2(L)]n 1, { [Cd(bpp)2(1,5-NDS)(H2O)2]·4H2O }n 2 and { [Cd(bpp)2(H2O2)2]·(1,5-NDS) } n 3 (L = 4,4′-bis(2-sulfonatostyryl)biphenyl, bpp = 1,3-di(4-pyd-dyl)propane and 1,5-NDS = 1,5-Naphthalenedisulfonate) have been synthesized from aqueous solution and structurally characterized by infrared spectroscopy, elemental analysis and single-crystal X-ray diffraction. Crystal data for complex 1: space group P21/n, a = 10.559(3), b = 13.138(4), c = 17.623(5)A^°, β = 100.852(3)°, V = 2400.9(12) A^°^3 Z = 2, Dc= 1.351 g/cm^3, F(000) = 1016, μ = 0.654 mm^-1, the final R = 0.0412 and wR = 0.0994; Crystal data for complex 2: space group P^-1, a = 8.5642(19), b = 10.076(3), c = 12.114(3) A^°, α = 81.623(7), β = 77.149(8), γ = 82.787(7)°, V = 1003.6(4) A^°^3 Z = 1, Dc= 1.495 g/cm^3, F(000) = 466,μ = 0.713 mm^3, the final R = 0.0241 and wR = 0.0713; Crystal data for complex 3: space group C2/c, a = 21.6024(15), b = 9.4608(5), c = 18.4656(11)A^°, β = 107.359(3)°, V= 3602.0(4)A^°^3 Z = 4, Dc= 1.533 g/cm^3, F(000) = 1704,μ = 0.780 mm^-1, the final R = 0.0229 and wR = 0.0572. The X-ray single diffraction reveals that 1 exhibits a 3D metal-organic framework formed from 2D Zn(bpp)2^2+ networks connected by L in the third dimension; 2 and 3 possess 3D and 2D architectures constructed from 1D polymeric chains through H-bond. Complexes 1-3 display photoluminescent emissions at 452 and 335 nm, respectively. 相似文献
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通过检测打火短路过程中产生较大的di/dt 和du/dt 来实现高压电源的打火短路保护。在研究了中性束加速电源控制和保护特点的基础上, 设计了诊断中性束加速电源在打火短路过程中的di/dt 和du/dt 的检测电路和相应的保护电路, 实现提前对加速器高压电源打火短路的保护。 相似文献
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1INTRODUCTION The employment of transition metal ions and ap-propriate bridging ligands has become a dominant theme in the construction of some interesting ar-rays[1,2],especially for the large square grid net-works.Recently,considerable research effort has been focused on the studies of polymeric frame-works with the ligands based on imidazole.These polymers are of great interest not only due to their intriguing topologies but also the potential applications in ion exchange,magnetic and e… 相似文献
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Reactions of Zn(NO3)2·6H2O and MNO3(M = Na, K and Rb) with H2mip(H2mip = 5-methylisophthalic acid) in DMF(DMF = N,N′-dimethylformamide) resulted in the formation of novel heterometallic metal-organic frameworks(Me2NH2)[ZnM(mip)2](1: M = Na; 2: M = K; 3: M = Rb, mip = 5-methylisophthalate dianion for 1~3). These complexes belong to the monoclinic system, space group P2/c and have been fully characterized by satisfactory elemental analysis, FT-IR spectra, TGA and single-crystal X-ray diffraction. Single-crystal X-ray diffraction studies reveal that 1~3 are 3D isomorphic structures based on a trinuclear unit {ZnM2(?2-COO)2(?3-COO)2} and exhibit pcu topological net and blue fluorescence. 相似文献
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Solvothermal reactions of Zn(NO3)2·6H2O with isophthalic acid in the presence of potassium nitrate lead to an acentric three-dimensional(3D) hetero-metallic inorganic-organic hybrid framework [ZnK2(m-BDC)2(H2O)2]n(1, m-H2 BDC = benzene-1,3-dicarboxylic acid). The crystal was characterized by elemental analysis, IR spectroscopy, TGA and single-crystal X-ray diffraction analysis. Complex 1 is of orthogonal crystal system, acentric space group Cmc21 with a = 19.764(6), b = 19.948(6), c = 12.039(4) , V = 4746(3) 3, Z = 4, C32H20O19K4Zn2, Mr = 995.66, Dc = 1.393 g/cm3, F(000) = 2000 and μ = 1.426 mm-1. The final R = 0.0761 and wR = 0.1841. The crystal exhibits remarkable blue luminescence emissions with high quantum yield of 56.02% and displays modest powder SHG efficiency of about 0.7 times that produced by a potassium dihydrogen phosphate(KDP) powder. In addition, it also exhibits potential ferroelectric property. 相似文献
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ECRH负高压脉冲电源系统控制特性研究 总被引:1,自引:1,他引:0
负高压脉冲电源是ECRH系统最重要的组成部分之一。电源系统工作的可靠性与稳定性直接影响整个ECRH系统的运行。给出了电源系统各环节的动态数学模型,设计出带有前馈的PI调节器。利用MATLAB仿真确定了调节器参数。实验结果显示,该电源系统具有较好的控制特性。 相似文献
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