典型文献
In situ mitigation strategies for field emission-induced cavity faults using low-level radiofrequency system
文献摘要：
In the Chinese ADS front-end demo supercon-ducting radiofrequency linac(CAFe)at the Institute of Modern Physics,a burst-noise signal-triggered cavity fault frequently appears during beam commissioning.These events are characterized by a rapid burst noise in the cavity pick-up,which may lead to an unexpected low-level radiofrequency(LLRF)response that eventually causes a cavity fault.To eliminate the undesirable reaction of the LLRF control loop,we propose a method that uses a burst-noise detection and processing algorithm integrated into the LLRF feedback controller.This algorithm can prevent undesired regulations in LLRF systems.Data analysis revealed that some burst-noise events did not exhibit measurable energy loss.In contrast,the other events were accompanied by a rapid loss of cavity stored energy and exhibited similarities to the"E-quench"phenomena reported in other laboratories.A particle-in-cell simulation indicated that the suspected E-quench phenomenon may be related to a plasma formation process inside the cavity.Fortunately,the LLRF algorithm is robust to the two dif-ferent types of burst-noise events and can significantly mitigate the corresponding cavity faults in CAFe beam commissioning.
文献关键词：
中图分类号：
作者姓名：
Feng Qiu;Yuan He;An-Dong Wu;Zhen-Long Zhu;Guo-Dong Jiang;Tian-Cai Jiang;Zheng Gao;Qi Chen;Zong-Heng Xue;Jin-Ying Ma;Cheng-Ye Xu;Zi-Qin Yang;Gui-Rong Huang
作者机构：
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
文献出处：
引用格式：
[1]Feng Qiu;Yuan He;An-Dong Wu;Zhen-Long Zhu;Guo-Dong Jiang;Tian-Cai Jiang;Zheng Gao;Qi Chen;Zong-Heng Xue;Jin-Ying Ma;Cheng-Ye Xu;Zi-Qin Yang;Gui-Rong Huang-.In situ mitigation strategies for field emission-induced cavity faults using low-level radiofrequency system)[J].核技术（英文版）,2022(11):46-60
A类：
CAFe,LLRF
B类：
situ,mitigation,strategies,field,emission,induced,cavity,faults,using,low,level,radiofrequency,Chinese,ADS,front,end,demo,supercon,ducting,linac,Institute,Modern,Physics,burst,noise,signal,triggered,frequently,appears,during,beam,commissioning,These,events,are,characterized,by,rapid,pick,which,may,lead,unexpected,response,that,eventually,causes,To,eliminate,undesirable,reaction,loop,propose,method,detection,processing,algorithm,integrated,into,feedback,controller,This,prevent,undesired,regulations,systems,Data,analysis,revealed,some,did,not,measurable,energy,loss,contrast,other,were,accompanied,stored,exhibited,similarities,quench,phenomena,reported,laboratories,particle,cell,simulation,indicated,suspected,phenomenon,related,plasma,formation,inside,Fortunately,robust,two,dif,ferent,types,significantly,mitigate,corresponding
AB值：
0.57455
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