Author: Vera Ramirez, L.
Paper Title Page
TUPAB215 Novel Non-Linear Particle Tracking Approach Employing Lie Algebraic Theory in the TensorFlow Environment 1920
 
  • J. Frank, M. Arlandoo, P. Goslawski, J. Li, T. Mertens, M. Ries, L. Vera Ramirez
    HZB, Berlin, Germany
  
  With this paper we pre­sent first re­sults for en­cod­ing Lie trans­for­ma­tions as com­pu­ta­tional graphs in Ten­sor­flow that are used as lay­ers in a neural net­work. By im­ple­ment­ing a re­cur­sive dif­fer­en­ti­a­tion scheme and em­ploy­ing Lie al­ge­braic ar­gu­ments we were able to re­pro­duce the di­a­grams for well known lat­tice con­fig­u­ra­tions. We track through sim­ple op­ti­cal lat­tices that are en­coun­tered as the main con­stituents of ac­cel­er­a­tors and demon­strate the flex­i­bil­ity and mod­u­lar­ity our ap­proach of­fers. The neural net­work can rep­re­sent the op­ti­cal lat­tice with pre­de­fined co­ef­fi­cients al­low­ing for par­ti­cle track­ing for beam dy­nam­ics or can learn from ex­per­i­men­tal data to fine-tune beam op­tics.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB215  
About • paper received ※ 12 May 2021       paper accepted ※ 31 August 2021       issue date ※ 21 August 2021  
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WEPAB317 Online Model Developments for BESSY II and MLS 3413
 
  • P. Schnizer, J. Bengtsson, T. Birke, J. Li, T. Mertens, M. Ries, A. Schälicke, L. Vera Ramirez
    HZB, Berlin, Germany
  
  Dig­i­tal mod­els have been de­vel­oped over a long time for prepar­ing ac­cel­er­a­tor com­mis­sion­ing next to bench­mark­ing the­ory pre­dic­tions to ma­chine mea­sure­ments. These dig­i­tal mod­els are nowa­days being re­al­ized as dig­i­tal shad­ows or dig­i­tal twins. Ac­cel­er­a­tor com­mis­sion­ing re­quires pe­ri­odic setup and re­view of the ma­chine sta­tus. Fur­ther­more, dif­fer­ent mea­sure­ments are only prac­ti­cal by com­par­i­son to the ma­chine model (e.g. beam based align­ment). In this paper we de­scribe the ar­chi­tec­ture cho­sen for our mod­els, de­scribe the frame­work Bluesky for mea­sure­ment or­ches­tra­tion and re­port on our ex­pe­ri­ence ex­em­pli­fy­ing on dy­namic aper­ture scans. Fur­ther­more we de­scribe our plans to ex­tend the mod­els ap­plied to BESSY~II and MLS to the cur­rently planned ma­chines BESSY~III and MLS~II.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB317  
About • paper received ※ 19 May 2021       paper accepted ※ 28 July 2021       issue date ※ 21 August 2021  
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