Micro & mini-bunching of the slow external beam at the AGS

J. W. Glenn, M. Brennan, K. A. Brown, D. Majka, A. Mincer

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The AGS's prime function when RHIC comes on line will be as a heavy ion injector, free time will exist for unique operation that can be tailored and dedicated to users. Many of the next generation of experiments require RF time structure in the spill as it is extracted to time events or assure no background during decay times. Two methods have been developed to meet these needs. Micro-bunching where the beam is forced between empty buckets producing bursts at arbitrary integer harmonics of rotation period, and mini-bunching where the beam is kept bunched to provide high extinction between bursts. With an RF dipole the period may be increased to three times the rotation period of the beam. Further modelling and test results with beam will be presented. At high beam currents above transition, tight clusters of beam form causing severe random spike structure in the spill. Forcing the beam between empty buckets before extraction breaks up these clusters with minimal modulation of the spill at the RF frequency. Results of spill structure and loss reduction will be given.

    Original languageEnglish (US)
    Title of host publicationProceedings of the IEEE Particle Accelerator Conference
    PublisherIEEE
    Pages1258-1260
    Number of pages3
    Volume2
    StatePublished - 1999
    EventThe 18th Biennial Particle Accelerator Conference - New York, NY, USA
    Duration: Mar 27 1999Apr 2 1999

    Other

    OtherThe 18th Biennial Particle Accelerator Conference
    CityNew York, NY, USA
    Period3/27/994/2/99

    Fingerprint

    Hazardous materials spills
    Heavy ions
    Modulation
    Experiments

    ASJC Scopus subject areas

    • Engineering(all)

    Cite this

    Glenn, J. W., Brennan, M., Brown, K. A., Majka, D., & Mincer, A. (1999). Micro & mini-bunching of the slow external beam at the AGS. In Proceedings of the IEEE Particle Accelerator Conference (Vol. 2, pp. 1258-1260). IEEE.

    Micro & mini-bunching of the slow external beam at the AGS. / Glenn, J. W.; Brennan, M.; Brown, K. A.; Majka, D.; Mincer, A.

    Proceedings of the IEEE Particle Accelerator Conference. Vol. 2 IEEE, 1999. p. 1258-1260.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Glenn, JW, Brennan, M, Brown, KA, Majka, D & Mincer, A 1999, Micro & mini-bunching of the slow external beam at the AGS. in Proceedings of the IEEE Particle Accelerator Conference. vol. 2, IEEE, pp. 1258-1260, The 18th Biennial Particle Accelerator Conference, New York, NY, USA, 3/27/99.
    Glenn JW, Brennan M, Brown KA, Majka D, Mincer A. Micro & mini-bunching of the slow external beam at the AGS. In Proceedings of the IEEE Particle Accelerator Conference. Vol. 2. IEEE. 1999. p. 1258-1260
    Glenn, J. W. ; Brennan, M. ; Brown, K. A. ; Majka, D. ; Mincer, A. / Micro & mini-bunching of the slow external beam at the AGS. Proceedings of the IEEE Particle Accelerator Conference. Vol. 2 IEEE, 1999. pp. 1258-1260
    @inproceedings{2e1fee058a0849698a3718e254574487,
    title = "Micro & mini-bunching of the slow external beam at the AGS",
    abstract = "The AGS's prime function when RHIC comes on line will be as a heavy ion injector, free time will exist for unique operation that can be tailored and dedicated to users. Many of the next generation of experiments require RF time structure in the spill as it is extracted to time events or assure no background during decay times. Two methods have been developed to meet these needs. Micro-bunching where the beam is forced between empty buckets producing bursts at arbitrary integer harmonics of rotation period, and mini-bunching where the beam is kept bunched to provide high extinction between bursts. With an RF dipole the period may be increased to three times the rotation period of the beam. Further modelling and test results with beam will be presented. At high beam currents above transition, tight clusters of beam form causing severe random spike structure in the spill. Forcing the beam between empty buckets before extraction breaks up these clusters with minimal modulation of the spill at the RF frequency. Results of spill structure and loss reduction will be given.",
    author = "Glenn, {J. W.} and M. Brennan and Brown, {K. A.} and D. Majka and A. Mincer",
    year = "1999",
    language = "English (US)",
    volume = "2",
    pages = "1258--1260",
    booktitle = "Proceedings of the IEEE Particle Accelerator Conference",
    publisher = "IEEE",

    }

    TY - GEN

    T1 - Micro & mini-bunching of the slow external beam at the AGS

    AU - Glenn, J. W.

    AU - Brennan, M.

    AU - Brown, K. A.

    AU - Majka, D.

    AU - Mincer, A.

    PY - 1999

    Y1 - 1999

    N2 - The AGS's prime function when RHIC comes on line will be as a heavy ion injector, free time will exist for unique operation that can be tailored and dedicated to users. Many of the next generation of experiments require RF time structure in the spill as it is extracted to time events or assure no background during decay times. Two methods have been developed to meet these needs. Micro-bunching where the beam is forced between empty buckets producing bursts at arbitrary integer harmonics of rotation period, and mini-bunching where the beam is kept bunched to provide high extinction between bursts. With an RF dipole the period may be increased to three times the rotation period of the beam. Further modelling and test results with beam will be presented. At high beam currents above transition, tight clusters of beam form causing severe random spike structure in the spill. Forcing the beam between empty buckets before extraction breaks up these clusters with minimal modulation of the spill at the RF frequency. Results of spill structure and loss reduction will be given.

    AB - The AGS's prime function when RHIC comes on line will be as a heavy ion injector, free time will exist for unique operation that can be tailored and dedicated to users. Many of the next generation of experiments require RF time structure in the spill as it is extracted to time events or assure no background during decay times. Two methods have been developed to meet these needs. Micro-bunching where the beam is forced between empty buckets producing bursts at arbitrary integer harmonics of rotation period, and mini-bunching where the beam is kept bunched to provide high extinction between bursts. With an RF dipole the period may be increased to three times the rotation period of the beam. Further modelling and test results with beam will be presented. At high beam currents above transition, tight clusters of beam form causing severe random spike structure in the spill. Forcing the beam between empty buckets before extraction breaks up these clusters with minimal modulation of the spill at the RF frequency. Results of spill structure and loss reduction will be given.

    UR - http://www.scopus.com/inward/record.url?scp=0033347752&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=0033347752&partnerID=8YFLogxK

    M3 - Conference contribution

    VL - 2

    SP - 1258

    EP - 1260

    BT - Proceedings of the IEEE Particle Accelerator Conference

    PB - IEEE

    ER -