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核技术  2015 

201.5MHz中子照相用RFQ加速器低电平控制系统的设计

DOI: 10.11889/j.0253-3219.2015.hjs.38.080204, PP. 80204-80204

Keywords: RFQ加速器,低电平控制系统

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Abstract:

北京大学自主研制了基于射频四极(RadioFrequencyQuadrupole,RFQ)强流氘束加速器。为满足该加速器稳定运行的要求,设计了一套低电平控制系统,系统主要包含自动增益控制(AutomaticGainControl,AGC)和自动频率控制(AutomaticFrequencyControl,AFC)两种方式,可实现对腔体频率、进腔功率的自动控制和手动控制。为保证安全、稳定运行,对SWR(StandingWaveRatio)、限位信号进行监测,通过RS232协议和LabVIEW界面实现HMI(HumanMachineInterface),亦可实现与PLC(ProgrammableLogicController)的无缝对接。连续闭环运行表明,控制系统对场幅度和相位的控制精度能够达到±1%和±1°之内,证明该低电平控制系统达到了RFQ加速器对各路功率和腔体频率稳定控制的要求。

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