典型文献
Optimization of the cavity beam-position monitor system for the Shanghai soft X-ray free-electron laser user facility
文献摘要：
To achieve high-efficiency operation of the high-gain free-electron laser(FEL),the electron beams and radiated photon beams need to be overlapped precisely and pass through the entire undulator section.Therefore,a high-resolution beam-position monitor(BPM)is required.A cavity BPM(CBPM)with a resonant cavity structure was developed and used in the Shanghai Soft X-ray FEL(SXFEL)test facility and can achieve a position resolution of＜1μm.The construction and operation of the SXFEL user facility also bring about higher requirements for beam-position measurement.In this case,the factors that affect the performance of the CBPM system were further ana-lyzed.These included the amplitude and phase stability of the local oscillator,stability of the trigger signal,perfor-mance of the radio frequency front-end,signal processing electronics,and signal processing algorithms.Based on the upgrade and optimization of the system,a beam test plat-form was built at the end of the linear acceleration section of the SXFEL,and the experimental results show that the position resolution of the system can reach 177 nm at a bunch charge of 500 pC,and the dynamic range is con-trolled within±300um,and the relative measurement uncertainty of the bunch charge can reach 0.021％,which are significant improvements compared to the attributes of the previous system.
文献关键词：
中图分类号：
作者姓名：
Jian Chen;Yong-Bin Leng;Lu-Yang Yu;Long-Wei Lai;Ren-Xian Yuan
作者机构：
Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China
文献出处：
引用格式：
[1]Jian Chen;Yong-Bin Leng;Lu-Yang Yu;Long-Wei Lai;Ren-Xian Yuan-.Optimization of the cavity beam-position monitor system for the Shanghai soft X-ray free-electron laser user facility)[J].核技术（英文版）,2022(10):22-32
A类：
undulator,CBPM,300um
B类：
Optimization,cavity,position,monitor,system,Shanghai,soft,ray,free,laser,user,facility,To,achieve,efficiency,operation,gain,beams,radiated,photon,need,overlapped,precisely,pass,through,entire,section,Therefore,resolution,required,resonant,structure,was,developed,used,Soft,SXFEL,test,construction,also,bring,about,higher,requirements,measurement,In,this,case,factors,that,affect,performance,were,further,ana,lyzed,These,included,amplitude,phase,stability,local,oscillator,trigger,signal,radio,frequency,front,end,processing,electronics,algorithms,Based,upgrade,optimization,plat,built,linear,acceleration,experimental,results,show,reach,bunch,charge,pC,dynamic,range,trolled,within,relative,uncertainty,which,significant,improvements,compared,attributes,previous
AB值：
0.499494
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