【摘要】 兰州重离子加速器冷却储存环(HIRFL-CSR)工作点(Tune)测量系统已投入调束运行。采用FFT测量法,用白噪声信号做激励源,经功率放大并通过同轴开关切换将激励信号加载到垂直或水平的对称极板上,通过位置检测器(BPM)采集束流信号。将BPM两极板感应到的束流信号分别经前置放大器放大,再通过相位相差180°的合路器将差信号送入实时频谱仪进行傅里叶分析,从而计算出Tune值。本文主要介绍HIRFL-CSR工作点测量原理、系统构成以及测量结果。更多还原

【Abstract】 The Tune measurement system for HIRFL-CSR has been running in the commissioning of CSRm.The FFT method is used in the system.It is composed of two parts,one is a kicker system that is made up of a noise generator,an excitation kicker,a power amplifier and a switch for the excitation signal,another one is for measurement of the Tune that is made up of a beam position monitor,a 180° hybrid,a switch for the time delay of the synchronization and a real time spectrum analyzer.The principle and the results of the Tune measurement are introduced in the paper.更多还原