聚龙一号装置是我国自主研制的首台多路并联超高功率脉冲装置,可根据物理实验的需要工作在不同的脉冲输出模式,负载上获得的电流脉冲前沿75~600 ns、峰值5~10 MA可调。4层圆盘锥型磁绝缘传输线是聚龙一号装置实现超高功率脉冲向负载传...聚龙一号装置是我国自主研制的首台多路并联超高功率脉冲装置,可根据物理实验的需要工作在不同的脉冲输出模式,负载上获得的电流脉冲前沿75~600 ns、峰值5~10 MA可调。4层圆盘锥型磁绝缘传输线是聚龙一号装置实现超高功率脉冲向负载传输的关键部件,磁绝缘传输线中产生的电流损失会对负载电流波形产生影响并使能量传输效率降低。为此,针对聚龙一号装置,通过全电路计算,在长短两种脉冲输出模式下,研究了磁绝缘传输线的电流损失特性。研究表明：对于电流前沿较快的Z-pinch实验类型,磁绝缘形成过程中外磁绝缘线的损失电流总和约为940 k A,磁绝缘形成后在柱孔汇流区的损失为330~743 k A;而对于前沿较慢的准等熵压缩实验类型,对应的损失分别为223 k A和77~174 k A。展开更多
A magnetically insulated transmission line （MITL） is used to transmit high power electric pulses in large pulse power systems. However, current loss is unavoidable, especially when the current density is up to 1 MA/...A magnetically insulated transmission line （MITL） is used to transmit high power electric pulses in large pulse power systems. However, current loss is unavoidable, especially when the current density is up to 1 MA/cm. In the paper, the current loss of an MITL made of stainless steel, which is usually used in large pulse power generators, is experimentally studied, and possible mechanisms to explain the current loss of the MITL are analyzed and discussed. From the experimental results, the relationship between loss current density and input current density follows approximately a power law. The loss is also related to the configuration of the MITL.展开更多
文摘聚龙一号装置是我国自主研制的首台多路并联超高功率脉冲装置,可根据物理实验的需要工作在不同的脉冲输出模式,负载上获得的电流脉冲前沿75~600 ns、峰值5~10 MA可调。4层圆盘锥型磁绝缘传输线是聚龙一号装置实现超高功率脉冲向负载传输的关键部件,磁绝缘传输线中产生的电流损失会对负载电流波形产生影响并使能量传输效率降低。为此,针对聚龙一号装置,通过全电路计算,在长短两种脉冲输出模式下,研究了磁绝缘传输线的电流损失特性。研究表明：对于电流前沿较快的Z-pinch实验类型,磁绝缘形成过程中外磁绝缘线的损失电流总和约为940 k A,磁绝缘形成后在柱孔汇流区的损失为330~743 k A;而对于前沿较慢的准等熵压缩实验类型,对应的损失分别为223 k A和77~174 k A。
基金supported by National Natural Science Foundation of China(No.10905047)
文摘A magnetically insulated transmission line （MITL） is used to transmit high power electric pulses in large pulse power systems. However, current loss is unavoidable, especially when the current density is up to 1 MA/cm. In the paper, the current loss of an MITL made of stainless steel, which is usually used in large pulse power generators, is experimentally studied, and possible mechanisms to explain the current loss of the MITL are analyzed and discussed. From the experimental results, the relationship between loss current density and input current density follows approximately a power law. The loss is also related to the configuration of the MITL.
