Author: Deng, Z.W.
Paper Title Page
MOPAB380 Status and Progress of the RF System for High Energy Photon Source 1165
 
  • P. Zhang, J. Dai, Z.W. Deng, L. Guo, T.M. Huang, D.B. Li, J. Li, Z.Q. Li, H.Y. Lin, Y.L. Luo, Q. Ma, F. Meng, Z.H. Mi, Q.Y. Wang, X.Y. Zhang, F.C. Zhao, H.J. Zheng
    IHEP, Beijing, People’s Republic of China
  
  Funding: This work was supported in part by High Energy Photon Source, a major national science and technology infrastructure in China and in part by the Chinese Academy of Sciences.
High En­ergy Pho­ton Source (HEPS) is a 6 GeV dif­frac­tion-lim­ited syn­chro­tron light source cur­rently under con­struc­tion in Bei­jing. It adopts a dou­ble-fre­quency RF sys­tem with 166.6 MHz as fun­da­men­tal and 499.8 MHz as third har­monic. The fun­da­men­tal cav­ity is mak­ing use of a su­per­con­duct­ing quar­ter-wave β=1 struc­ture and the third har­monic is of su­per­con­duct­ing el­lip­ti­cal sin­gle-cell geom­e­try for the stor­age ring, while nor­mal-con­duct­ing 5-cell cav­i­ties are cho­sen for the booster ring. A total of 900 kW RF power shall be de­liv­ered to the beam by the 166.6 MHz cav­i­ties and the third har­monic cav­i­ties are ac­tive. All cav­i­ties are dri­ven by solid-state power am­pli­fiers and the RF fields are reg­u­lated by dig­i­tal low-level RF con­trol sys­tems. The cav­ity and an­cil­lar­ies, high-power RF sys­tem and low-level RF con­trol sys­tem are in the pro­to­typ­ing phase. This paper pre­sents the cur­rent sta­tus and progress of the RF sys­tem for HEPS. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB380  
About • paper received ※ 09 May 2021       paper accepted ※ 09 June 2021       issue date ※ 24 August 2021  
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WEPAB394 Development of a New Interlock and Data Acquisition for the RF System at High Energy Photon Source 3630
 
  • Z.W. Deng, J.P. Dai, H.Y. Lin, Q.Y. Wang, P. Zhang
    IHEP, Beijing, People’s Republic of China
  
  Funding: This work was supported by High Energy Photon Source, a major national science and technology infrastructure in China.
A new in­ter­lock and data ac­qui­si­tion (DAQ) sys­tem is being de­vel­oped for the RF sys­tem at High En­ergy Pho­ton Source (HEPS) to pro­tect es­sen­tial de­vices as well as to lo­cate the fault. Var­i­ous sig­nals col­lected and pre-processed by the DAQ sys­tem and in­di­vid­ual in­ter­lock sig­nals from solid-state power am­pli­fiers, low-level RFs, arc de­tec­tors, etc. are sent to the in­ter­lock sys­tem for logic de­ci­sion to con­trol the RF switch. Pro­gram­ma­ble logic con­trollers (PLC) are used to col­lect slow sig­nals like tem­per­a­ture, water flowrate, etc., while fast ac­qui­si­tion for RF sig­nals is re­al­ized by ded­i­cated boards with down-con­ver­sion fron­tend and dig­i­tal sig­nal pro­cess­ing boards. In order to im­prove the re­sponse time, field pro­gram­ma­ble gate array (FPGA) has been used for in­ter­lock logic im­ple­men­ta­tion with an em­bed­ded ex­per­i­men­tal physics and in­dus­trial con­trol sys­tem (EPICS). Data stor­age is man­aged by using EPICS Archiver Ap­pli­ance and an op­er­a­tor in­ter­face is de­vel­oped by using Con­trol Sys­tem Stu­dio (CSS) run­ning on a stand­alone com­puter. This paper pre­sents the de­sign and the first test of the new in­ter­lock and DAQ for HEPS RF sys­tem. 		 
poster icon Poster WEPAB394 [2.140 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB394  
About • paper received ※ 16 May 2021       paper accepted ※ 14 July 2021       issue date ※ 31 August 2021  
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