FE-BASED NANOCRYSTALLINE FINEMET CORES FOR INDUCTION ACCELERATORS
FE-BASED NANOCRYSTALLINE FINEMET CORES FOR INDUCTION ACCELERATORS
复制标题
DOI：
10.1016/0168-9002(93)90066-q
复制
发表时间：
1993-07-01
影响因子：
1.4
通讯作者：
SHIHO, M
中科院分区：
文献类型：
--
作者：
NAKAJIMA, S;ARAKAWA, S;SHIHO, M
用于高重复率线性感应加速器的脉冲功率调制器一般由采用闸流管的主开关、升压脉冲变压器、多级磁脉冲压缩电路和脉冲形成线组成。线性感应加速器中的饱和电抗器通常采用铁基非晶铁芯，因为铁基铁芯的有效感应摆幅大，使得饱和电抗器体积小。然而，为了提高脉冲功率调制器的效率，降低铁芯损耗的需求很大。近年来，人们研制出了一种具有高饱和磁通密度和低磁芯损耗的新型铁基纳米晶软磁材料FINEMET。采用高压脉冲激励电路测量了FINEMET绝缘铁芯的动态磁特性，计算了两级磁脉冲压缩电路中饱和电抗器的总铁芯体积和总铁芯损耗。结果表明，在磁脉冲压缩电路中，采用FINEMET铁芯的饱和电抗器的总铁芯损耗为传统铁基非晶铁芯的68%，总铁芯体积为传统铁基非晶铁芯的133%。
Pulse power modulators used for high repetition rate linear induction accelerators are generally composed of main switches using thyratrons, step-up pulse transformers, multistage magnetic pulse compression circuits and pulse forming lines. Fe-based amorphous cores are normally used for saturable reactors in linear induction accelerators, because the volume of the saturable reactor using Fe-based cores is small due to its high effective induction swing. However, there is a great demand to reduce the core loss in order to improve the efficiency of pulse power modulators. Recently, a new Fe-based nanocrystalline soft magnetic materials, FINEMET, that has both high saturation flux density and low core loss was developed. The dynamic magnetic characteristics of an insulated FINEMET core were measured using a high voltage pulse excitation circuit, and the total core volume and the total core loss for saturable reactors in a 2-stage magnetic pulse compression circuit were calculated.As the result, by using the FINEMET cores for saturable reactors in a magnetic pulse compression circuit, the total core loss becomes 68%, and the total core volume becomes 133%, of the conventional Fe-based amorphous cores.