To validate neutronics calculation for the blanket design of fusion-fission hybrid reactor,experiments for measuring reaction rates inside two simulating assemblies are performed.Two benchmark assemblies were develope...To validate neutronics calculation for the blanket design of fusion-fission hybrid reactor,experiments for measuring reaction rates inside two simulating assemblies are performed.Two benchmark assemblies were developed for the neutronics experiments.A D-T fusion neutron source is placed at the center of the setup.One of them consists of three layers of depleted uranium shells and two layers of polyethylene shells,and these shells are arranged alternatively.The ^(238)U capture reaction rates are measured using depleted uranium foils and an HPGe gamma spectrometer.The fission reaction rates are measured using a fission chamber coated with depleted uranium.The other assembly consists of depleted uranium and LiH shells.The tritium production rates are measured using the lithium glass scintillation detector which is placed in the LiH region of the assembly.The measured reaction rates are compared with the calculated ones predicted using MCNP code,and C/E values are obtained.展开更多
设计了用于Z箍缩丝阵实验的重频LTD 驱动器,含6路并联模组,每组由8个0.8 MA 原型模块串联组成,全真空结构.原型模块采用全新的单路触发和电感隔离技术,触发难度和重频运行可靠性得到显著优化.利用电路模拟程序对驱动器进行了仿真计算,...设计了用于Z箍缩丝阵实验的重频LTD 驱动器,含6路并联模组,每组由8个0.8 MA 原型模块串联组成,全真空结构.原型模块采用全新的单路触发和电感隔离技术,触发难度和重频运行可靠性得到显著优化.利用电路模拟程序对驱动器进行了仿真计算,结果表明：在初始半径1.2cm、线质量1mg/cm 的Z箍缩负载上,驱动器的输出电流峰值可到5.2 MA,前沿91ns;负载内爆最大动能78kJ,从电容储能至负载动能的转化效率为11.7%.该驱动器预期将获得高达20%～30%的辐射能量效率,可为Z箍缩物理研究提供高效的实验平台.展开更多
基金supported by the National Special Magnetic Confinement Fusion Energy Research (No.2010GB111002),China
文摘To validate neutronics calculation for the blanket design of fusion-fission hybrid reactor,experiments for measuring reaction rates inside two simulating assemblies are performed.Two benchmark assemblies were developed for the neutronics experiments.A D-T fusion neutron source is placed at the center of the setup.One of them consists of three layers of depleted uranium shells and two layers of polyethylene shells,and these shells are arranged alternatively.The ^(238)U capture reaction rates are measured using depleted uranium foils and an HPGe gamma spectrometer.The fission reaction rates are measured using a fission chamber coated with depleted uranium.The other assembly consists of depleted uranium and LiH shells.The tritium production rates are measured using the lithium glass scintillation detector which is placed in the LiH region of the assembly.The measured reaction rates are compared with the calculated ones predicted using MCNP code,and C/E values are obtained.
