Author: Lu, P.
Paper Title Page
MOPAB275 Study on Supports of BPM Displacement Measurement System for HLS 870
 
  • C.H. Wang, P. Lu, B.G. Sun, T.Y. Zhou
    USTC/NSRL, Hefei, Anhui, People’s Republic of China
  
  Funding: National Synchrotron Radiation Laboratory
HLS is the sec­ond-gen­er­a­tion light source with en­ergy of 800 MeV and emit­tance of less than 40 nm-rad. In order to im­prove the beam orbit sta­bil­ity and cor­rect the er­rors in­tro­duced in the or­bital feed­back sys­tem due to move­ment of the vac­uum cham­ber and BPM, a sys­tem for mea­sur­ing BPM dis­place­ment will be built. It re­quires a high de­gree of me­chan­i­cal and ther­mal sta­bil­ity for its sup­ports. The sup­port should have a higher eigen-fre­quency to min­i­mize the am­pli­fi­ca­tion of ground vi­bra­tion. In this paper, a se­ries of sim­u­la­tion, in­clud­ing fi­nite el­e­ment analy­sis (FEA), mea­sure­ment and analy­sis have been done upon the sup­port to make sure it can meet the re­quire­ments of the sta­bil­ity of the BPM dis­place­ment mea­sure­ment sys­tem. 		 
poster icon Poster MOPAB275 [1.025 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB275  
About • paper received ※ 18 May 2021       paper accepted ※ 21 May 2021       issue date ※ 26 August 2021  
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TUPAB222 Application and Development of the Streak Camera Measurement System at HLS-II 1942
 
  • Y.K. Zhao, S.S. Jin, P. Lu, B.G. Sun, J.G. Wang, F.F. Wu, T.Y. Zhou
    USTC/NSRL, Hefei, Anhui, People’s Republic of China
  
  The dual-ax­ial scan streak cam­era plays an im­por­tant role in the su­per-fast op­ti­cal mea­sure­ment and the beam di­ag­no­sis of the ac­cel­er­a­tors. In­deed, the de­vel­op­ment of the syn­chro­tron light mea­sure­ment sys­tem by virtue of the streak cam­era pro­vides an ef­fec­tive tool and re­search plat­form for ac­cel­er­a­tor physics and su­per-fast op­ti­cal phe­nom­e­non. In this paper, the con­fig­u­ra­tion of the streak cam­era mea­sure­ment sys­tem is roughly de­scribed. And the ex­per­i­men­tal re­searches are si­mul­ta­ne­ously per­formed, in­clud­ing the bunch length­en­ing, the po­ten­tial-well dis­tor­tion, the lon­gi­tu­di­nal bunch os­cil­la­tions, and the beam evo­lu­tion dur­ing the sin­gle bunch op­er­a­tion mode in the HLS-II stor­age ring. More­over, the ef­fects of the RF mod­u­la­tion on the beam life­time and lon­gi­tu­di­nal bunch beam dy­nam­ics are car­ried out.  
poster icon Poster TUPAB222 [1.713 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB222  
About • paper received ※ 10 May 2021       paper accepted ※ 16 June 2021       issue date ※ 14 August 2021  
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