Author: Giachero, A.F.
Paper Title Page
THPAB257 Fast Orbit Corrector Power Supply in MTCA.4 Form Factor for Sirius Light Source 4307
 
  • A.F. Giachero, G.B.M. Bruno, L.M. Russo, D.O. Tavares
    LNLS, Campinas, Brazil
  
  A new fast orbit feed­back (FOFB) hard­ware ar­chi­tec­ture has been pur­sued at Sir­ius. The fast cor­rec­tor mag­nets’ are fed by power sup­ply mod­ules which are placed in the same Mi­croTCA.4 crates where the BPM dig­i­tiz­ers and FOFB con­trollers are lo­cated. Each chan­nel is made of a 3-Watt lin­ear am­pli­fier whose out­put cur­rents are dig­i­tally con­trolled by the same FPGA where the dis­trib­uted orbit feed­back con­troller is processed. The am­pli­fier is spec­i­fied to reach up to 10 kHz small-sig­nal band­width on a 3.5 mH in­duc­tance mag­net and ±1 A full scale, which trans­lates to 30 urad de­flec­tion on Sir­ius’ 3 GeV beam. Such a high level of in­te­gra­tion aims at min­i­miz­ing the over­all la­tency of the FOFB loop while lever­ag­ing the crate in­fra­struc­ture, namely elec­tron­ics en­clo­sure, DC power, cool­ing, and hard­ware man­age­ment sup­port al­ready pro­vided by the MTCA.4 crates. The fast cor­rec­tor power sup­ply chan­nels are placed on Rear Tran­si­tion Mod­ules (RTMs) which are at­tached to the front AMC FPGA mod­ule where the FOFB con­troller is im­ple­mented. This paper will de­scribe the main de­sign con­cepts and re­port on the ex­per­i­men­tal re­sults of the first pro­to­types.  
poster icon Poster THPAB257 [48.881 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB257  
About • paper received ※ 22 May 2021       paper accepted ※ 27 July 2021       issue date ※ 20 August 2021  
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