兰州重离子回旋加速器主场电源改造  

Reform of main power supply of the Lanzhou heavy ion cyclotron

作　　者：欧恒恒 燕宏斌[1] 张帅 周宁 赵鑫 原振栋[1] 吴凤军[1] Ou Hengheng;Yan Hongbin;Zhang Shuai;Zhou Ning;Zhao Xin;Yuan Zhendong;Wu Fengjun(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学核科学与技术学院,北京100049

出　　处：《强激光与粒子束》2022年第6期66-71,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金青年科学基金项目(Y916010GJ0)。

摘　　要：为满足分离扇回旋加速器(SSC)对于磁场精度的需求,需对其主场电源进行改造。提出开关电源与线性电源相结合的方式作为SSC主场电源的改造方案。电源总体分为两部分,采用模块化的开关电源作为前级电压源,三极管线性调整电路作为后级模块的主电路,充分利用两种电源的优势,实现高稳定度、低纹波的电流输出,同时大幅度提升电源的功率密度和可靠性。文章介绍了电源的工作原理及改造过程,详细阐述了三极管线性放大原理以及管压降控制电路、输出电流控制电路的设计与实现,通过仿真对电路进行功能验证,最终在电源样机上进行实验测试。测试结果表明:改造后主场电源输出电流稳定度达到了±3.99×10^(−6),电流纹波达到了2.7×10^(−9),各项性能均优于改造前。To meet the needs of the magnetic field accuracy of the Separated Sector Cyclotron(SSC),the main field power supply must be modified.We proposed a combination of switching power supply and linear power supply as the transformation solution of new power supply.There are two parts of the power supply,modular switching power supply is used as the front-end voltage source,and the triode linear adjustment circuit is used as the main circuit of the back-end module.Making full use of the advantages of these two kinds of power supplies,a power supply with high-stability and low-ripple current output was achieved,while the power density and reliability was greatly improved.The article introduces the principle and the reformation process of the power supply,elaborates the linear amplification principle of the triode,the design of the tube voltage drop control circuit and the output current control circuit.The power supply was verified through the simulation,and tested experimentally on the power supply prototype.The test results show that the stability of the output current after the reformation has reached±3.99×10^(−6),the current ripple has reached 2.7×10^(−9),the performances are better than that before reformation.

关 键 词：加速器电源 高稳定度 低纹波 线性调整 

分 类 号：TL503.5[核科学技术—核技术及应用]