Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors

Yang, X.; Smaluk, V.; Yu, L. H.; Tian, Y.; Ha, K.

doi:10.1103/PhysRevAccelBeams.20.054001

Title: Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors

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Abstract

A novel technique has been developed to improve the precision and shorten the measurement time of the LOCO (linear optics from closed orbits) method. This technique, named AC LOCO, is based on sine-wave (ac) beam excitation via fast correctors. Such fast correctors are typically installed at synchrotron light sources for the fast orbit feedback. The beam oscillations are measured by beam position monitors. The narrow band used for the beam excitation and measurement not only allows us to suppress effectively the beam position noise but also opens the opportunity for simultaneously exciting multiple correctors at different frequencies (multifrequency mode). We demonstrated at NSLS-II that AC LOCO provides better lattice corrections and works much faster than the traditional LOCO method.

Authors:: Yang, X.; Smaluk, V.; Yu, L. H.; Tian, Y.; Ha, K.

Publication Date:: 2017-05-02

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1355069

Alternate Identifier(s):: OSTI ID: 1413915

Report Number(s):: BNL-114344-2017-JA
Journal ID: ISSN 2469-9888; PRABCJ; 054001

Grant/Contract Number:: AC02-98CH10886; SC0012704

Resource Type:: Published Article

Journal Name:: Physical Review Accelerators and Beams

Additional Journal Information:: Journal Name: Physical Review Accelerators and Beams Journal Volume: 20 Journal Issue: 5; Journal ID: ISSN 2469-9888

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; NSLS-II; LOCO; linear optics; closed orbits; National Synchrotron Light Source II

Citation Formats


                    Yang, X., Smaluk, V., Yu, L. H., Tian, Y., and Ha, K. Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors.  United States: N. p., 2017. 
Web.  https://doi.org/10.1103/PhysRevAccelBeams.20.054001.

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                    Yang, X., Smaluk, V., Yu, L. H., Tian, Y., & Ha, K. Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors.  United States.  https://doi.org/10.1103/PhysRevAccelBeams.20.054001

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                    Yang, X., Smaluk, V., Yu, L. H., Tian, Y., and Ha, K. Tue .  
"Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors".  United States.  https://doi.org/10.1103/PhysRevAccelBeams.20.054001.

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@article{osti_1355069,

  title        = {Fast and precise technique for magnet lattice correction via sine-wave excitation of fast correctors},

  author       = {Yang, X. and Smaluk, V. and Yu, L. H. and Tian, Y. and Ha, K.},

  abstractNote = {A novel technique has been developed to improve the precision and shorten the measurement time of the LOCO (linear optics from closed orbits) method. This technique, named AC LOCO, is based on sine-wave (ac) beam excitation via fast correctors. Such fast correctors are typically installed at synchrotron light sources for the fast orbit feedback. The beam oscillations are measured by beam position monitors. The narrow band used for the beam excitation and measurement not only allows us to suppress effectively the beam position noise but also opens the opportunity for simultaneously exciting multiple correctors at different frequencies (multifrequency mode). We demonstrated at NSLS-II that AC LOCO provides better lattice corrections and works much faster than the traditional LOCO method.},

  doi          = {10.1103/PhysRevAccelBeams.20.054001},

  journal      = {Physical Review Accelerators and Beams},

  number       = 5,

  volume       = 20,

  place        = {United States},

  year         = {2017},

  month        = {5}

}

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