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Online regularization of Poincaré map of storage rings with Shannon entropy

  • Yongjun Li
  • , Kelly Anderson
  • , Derong Xu
  • , Yue Hao
  • , Kiman Ha
  • , Yoshiteru Hidaka
  • , Minghao Song
  • , Robert Rainer
  • , Victor Smaluk
  • , Timur Shaftan

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A measurable chaos indicator is used as the online optimization objective in tuning a complicated nonlinear system - the National Synchrotron Light Source-II storage ring. Through analyzing the Shannon entropy in measured Poincaré maps, not only can the commonly used nonlinear characterizations be extracted, but more importantly, the chaos can be quantified and then used for an online regularization of these maps. The method itself is general and applicable to other tunable nonlinear systems as well.

Original languageEnglish
Article number034001
JournalPhysical Review Accelerators and Beams
Volume28
Issue number3
DOIs
StatePublished - Mar 2025

Funding

We would like to thank Sergei Nagaitsev (BNL, USA) and Ivan Morozov (NSTU, Russia) for their their suggestions. This research is supported by the U.S. Department of Energy under Contract No. DE-SC0012704, the NSLS-II Facility Improvement Projects and the DOE HEP award DE-SC0023722. Coauthor K. A. is partially sponsored by Brookhaven National Laboratory Graduate Research Internship Program 2024. We would like to thank Sergei Nagaitsev (BNL, USA) and Ivan Morozov (NSTU, Russia) for their their suggestions. This research is supported by the U.S. Department of Energy under Contract No. DE-SC0012704, the NSLS-II Facility Improvement Projects and the DOE HEP award DE-SC0023722. Coauthor K.A. is partially sponsored by Brookhaven National Laboratory Graduate Research Internship Program 2024.

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