Beam position monitor gate functionality implementation and applications

Cheng, Weixing; Ha, Kiman; Li, Yongjun; Podobedov, Boris

doi:10.1016/j.mex.2018.06.006

Title: Beam position monitor gate functionality implementation and applications

Abstract

We introduce a novel technique to implement gate functionality for the beam position monitors (BPM) at the National Synchrotron Light Source II (NSLS-II). The functionality, now implemented in FPGA, allows us to acquire two separated bunch-trains’ synchronized turn-by-turn (TBT) data simultaneously with the NSLS-II in-house developed BPM system. The gated position resolution is improved about 3 times by narrowing the sampling width. Experimentally we demonstrated that the machine lattice could be transparently characterized with the gated TBT data of a short diagnostic bunch-train Cheng et al., 2017; Li et al., 2017. Other applications, for example, precisely characterizing storage ring impedance/wake-field through recording the beam positions of two separated bunch trains has been experimentally demonstrated.

Authors:

Cheng, Weixing ^[1]; Ha, Kiman ^[1]; Li, Yongjun ^[1]; Podobedov, Boris ^[1]

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

Publication Date:: Thu Jun 14 00:00:00 EDT 2018

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

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

OSTI Identifier:: 1456893

Report Number(s):: BNL-205777-2018-JAAM
Journal ID: ISSN 2215-0161

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: MethodsX

Additional Journal Information:: Journal Volume: 5; Journal Issue: C; Journal ID: ISSN 2215-0161

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; BPM; Signal processing; Gate; Lattice; Impedance; Closed orbit

Citation Formats


                    Cheng, Weixing, Ha, Kiman, Li, Yongjun, and Podobedov, Boris. Beam position monitor gate functionality implementation and applications.  United States: N. p., 2018. 
Web.  doi:10.1016/j.mex.2018.06.006.

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                    Cheng, Weixing, Ha, Kiman, Li, Yongjun, & Podobedov, Boris. Beam position monitor gate functionality implementation and applications.  United States.  https://doi.org/10.1016/j.mex.2018.06.006

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                    Cheng, Weixing, Ha, Kiman, Li, Yongjun, and Podobedov, Boris. Thu .  
"Beam position monitor gate functionality implementation and applications".  United States.  https://doi.org/10.1016/j.mex.2018.06.006.  https://www.osti.gov/servlets/purl/1456893.

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@article{osti_1456893,

  title        = {Beam position monitor gate functionality implementation and applications},

  author       = {Cheng, Weixing and Ha, Kiman and Li, Yongjun and Podobedov, Boris},

  abstractNote = {We introduce a novel technique to implement gate functionality for the beam position monitors (BPM) at the National Synchrotron Light Source II (NSLS-II). The functionality, now implemented in FPGA, allows us to acquire two separated bunch-trains’ synchronized turn-by-turn (TBT) data simultaneously with the NSLS-II in-house developed BPM system. The gated position resolution is improved about 3 times by narrowing the sampling width. Experimentally we demonstrated that the machine lattice could be transparently characterized with the gated TBT data of a short diagnostic bunch-train Cheng et al., 2017; Li et al., 2017. Other applications, for example, precisely characterizing storage ring impedance/wake-field through recording the beam positions of two separated bunch trains has been experimentally demonstrated.},

  doi          = {10.1016/j.mex.2018.06.006},

  journal      = {MethodsX},

  number       = C,

  volume       = 5,

  place        = {United States},

  year         = {Thu Jun 14 00:00:00 EDT 2018},

  month        = {Thu Jun 14 00:00:00 EDT 2018}

}

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Journal Article:

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Works referenced in this record:

Fast beam-ion instability. II. Effect of ion decoherence
journal, November 1995

Stupakov, G. V.; Raubenheimer, T. O.; Zimmermann, F.
Physical Review E, Vol. 52, Issue 5
DOI: 10.1103/physreve.52.5499

Fast beam-ion instability. I. Linear theory and simulations
journal, November 1995

Raubenheimer, T. O.; Zimmermann, F.
Physical Review E, Vol. 52, Issue 5
DOI: 10.1103/physreve.52.5487

Measurement of local impedance by an orbit bump method
journal, June 2004

Kiselev, V.; Smaluk, V.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 525, Issue 3
DOI: 10.1016/j.nima.2004.01.077

Techniques for Transparent Lattice Measurement and Correction
text, January 2017

Cheng, Weixing; Ha, Kiman; Li, Yongjun
JACoW, Geneva, Switzerland
DOI: 10.18429/jacow-ipac2017-mopab151

First Observations of a “Fast Beam-Ion Instability”
journal, July 1997

Byrd, J.; Chao, A.; Heifets, S.
Physical Review Letters, Vol. 79, Issue 1
DOI: 10.1103/PhysRevLett.79.79

Experimental evidence of ion-induced instabilities in the NSLS-II storage ring
journal, July 2017

Cheng, Weixing; Li, Yongjun; Podobedov, Boris
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 861
DOI: 10.1016/j.nima.2017.03.020

Measurement of local impedance by an orbit bump method
journal, June 2004

Kiselev, V.; Smaluk, V.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 525, Issue 3
DOI: 10.1016/j.nima.2004.01.077

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Title: Beam position monitor gate functionality implementation and applications

Abstract

Citation Formats

Fast beam-ion instability. II. Effect of ion decoherence journal, November 1995

Fast beam-ion instability. I. Linear theory and simulations journal, November 1995

Measurement of local impedance by an orbit bump method journal, June 2004

Techniques for Transparent Lattice Measurement and Correction text, January 2017

First Observations of a “Fast Beam-Ion Instability” journal, July 1997

Experimental evidence of ion-induced instabilities in the NSLS-II storage ring journal, July 2017

Measurement of local impedance by an orbit bump method journal, June 2004

Fast beam-ion instability. II. Effect of ion decoherence
journal, November 1995

Fast beam-ion instability. I. Linear theory and simulations
journal, November 1995

Measurement of local impedance by an orbit bump method
journal, June 2004

Techniques for Transparent Lattice Measurement and Correction
text, January 2017

First Observations of a “Fast Beam-Ion Instability”
journal, July 1997

Experimental evidence of ion-induced instabilities in the NSLS-II storage ring
journal, July 2017

Measurement of local impedance by an orbit bump method
journal, June 2004