Ultrahigh spatiotemporal resolution beam signal reconstruction with bunch phase compensation

作     者：You-Ming Deng Yong-Bin Leng Xing-Yi Xu Jian Chen Yi-Mei Zhou You-Ming Deng;Yong-Bin Leng;Xing-Yi Xu;Jian Chen;Yi-Mei Zhou

作者机构：Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China University of the Chinese Academy of SciencesBeijing 100049China Shanghai Synchrotron Radiation FacilityChinese Academy of SciencesShanghai 201204China University of Science and Technology of ChinaHefei 230026China Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2024年第35卷第5期

页      面：99-108页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：supported by the National Key R&D Program of China(No.2022YFA1602201) the international partnership program of the Chinese Academy of Sciences(No.211134KYSB20200057) 

主　　题：Turn-by-turn bunch phase compensation technique Equivalent sampling Signal reconstruction algorithm Ultrahigh spatiotemporal resolution SSRF 

摘      要：Various electromagnetic signals are excited by the beam in the acceleration and beam-diagnostic elements of a particle *** is important to obtain time-domain waveforms of these signals with high temporal resolution for research,such as the study of beam–cavity interactions and bunch-by-bunch parameter ***,a signal reconstruction algorithm with ultrahigh spatiotemporal resolution and bunch phase compensation based on equivalent sampling is proposed in this *** with traditional equivalent sampling,the use of phase compensation and setting the bunch signal zero-crossing point as the time reference can construct a more accurate reconstructed *** basic principles of the method,simulation,and experimental comparison are also *** on the beam test platform of the Shanghai Synchrotron Radiation Facility(SSRF)and the method of experimental verification,the factors that affect the reconstructed signal quality are analyzed and discussed,including the depth of the sampled data,quantization noise of analog-to-digital converter,beam transverse oscillation,and longitudinal *** results of the beam experiments show that under the user operation conditions of the SSRF,a beam excitation signal with an amplitude uncertainty of 2%can be reconstructed.