束流强度探测变压器  

Toroidal AC Transformer for Beam Intensity Measurements in CSR

作　　者：龙娇艳[1] 原有进[1] 肖国青[1] 

机构地区：[1]中国科学院近代物理研究所,甘肃兰州730000

出　　处：《原子核物理评论》2002年第1期73-75,共3页Nuclear Physics Review

基　　金：国家重大科学工程---兰州重离子加速器冷却储存环 (HIRFL -CSR)工程束流诊断系统子课题~~

摘　　要：兰州重离子加速器冷却储存环工程 (HIRFL CSR)主环和实验环上带电粒子束流强度的测量和监视拟由环型束流变压器实现 .通过对各种磁芯性能的分析和比较 ,束流变压器磁芯材料最终采用环形高磁导率超微晶合金 ,可测量束流脉冲的频率范围为 0 .2 - 2MHz .选择低噪声放大器将感应信号适当放大 ,可以实现对最小流强为 1μA束流的测量 .The intensity of a pulsed beam of charged particles in the Cooling Storage Ring Project of Heavy Ion Research Facility in Lanzhou (HIRFL-CSR) will be measured with a toroidal current transformer. By comparing and analyzing the properties of kinds of magnetic cores, a strip wound toroidal core is adopted, which is made of a high-permeability alloy and can measure a pulsed beam with frequency range of 0.2 to 2 MHz. The permeability of Fe-based nanocrystalline alloy varying with frequency is measured and the noises in the circuit are analyzed. By adding a low-noise operational amplifier into the circuit, the current down to 1 μA can be detected.

关 键 词：束流变压器 磁导率 频率 变压器芯 兰州重离子加速冷却存储环 带电粒子 束流强度 

分 类 号：TL594[核科学技术—核技术及应用] TM4[电气工程—电器]