Author: Vandenhoeke, A.
Paper Title Page
WEPAB383 An Evolutionary Algorithm Approach to Multi-Pass ERL Optics Design 3610
 
  • I. Neththikumara, T. Satogata
    ODU, Norfolk, Virginia, USA
  • R.M. Bodenstein, S.A. Bogacz, T. Satogata
    JLab, Newport News, Virginia, USA
  • A. Vandenhoeke
    ULB, Bruxelles, Belgium
  
  Funding: This material is based upon work supported by the U.S. Department of Energy under contract DE-AC05-06OR23177.
An En­ergy Re­cov­ery Ex­per­i­ment at CEBAF (ER@​CEBAF) is aimed at demon­strat­ing high en­ergy, low cur­rent, multi-pass en­ergy re­cov­ery at the ex­ist­ing 12 GeV CEBAF ac­cel­er­a­tor. The beam break-up in­sta­bil­ity, lim­it­ing the max­i­mum beam cur­rent, can be con­trolled through min­i­miz­ing beta func­tions for the low­est en­ergy pass, which gives a pref­er­ence to strongly fo­cus­ing op­tics, e.g. a semi-pe­ri­odic FODO lat­tice. On the other hand, one needs to limit beta func­tion ex­cur­sions, caused by under fo­cus­ing, at the higher en­ergy passes, which in turn fa­vors weakly fo­cus­ing linac op­tics. Bal­anc­ing both ef­fects is the main ob­jec­tive of pro­posed multi-pass linac op­tics op­ti­miza­tion. Here, we dis­cuss an op­tics de­sign process for ER@​CEBAF trans­verse op­tics using a ge­netic al­go­rithm. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB383  
About • paper received ※ 19 May 2021       paper accepted ※ 02 July 2021       issue date ※ 15 August 2021  
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