重复高压脉冲产生与成形一体化装置研制

介绍了脉冲变压器与分布参量形成线相结合的高功率脉冲产生与成形一体技术，简要阐述了采用该技术的高压脉冲发生器的基本设计思想。研制的脉冲变压器与形成线一体化装置利用变压器的同轴开环铁芯来充当分布电参量脉冲形成线的内外导体，将脉冲功率源中最重要的两个独立部件有机结合起来，实现了结构的紧凑性。高压脉冲发生器在重复频率100 Hz、变压器工作电压1.65 MV时能够稳定运行，输出脉冲电压760 kV,峰值功率23 GW,脉冲宽度大于40 ns。

Focus anisoplanatism for 1.2 m telescope laser guide stars in adaptive optics system

A precise simulation the focus anisoplanatism error of Yunnan observatory 1.2 m 61-element laser guide star adaptive optics system, which caused by laser beacon at a finite range travels a different path than does the light from natural star at a infinite range. This error can be eliminated by use of laser guide stars. However, there are two sources of error limit multiple beacon adaptive optical system, beacon position measurement error and conic tilt error. Analysis the two errors when project two to five laser guide stars. The result showed that with the increase of high and number of laser beam, especially the focus anisoplanatism of Na laser guide stars could reduced to 1 rad2.