• Login
    View Item 
    •   DSpace Home
    • Stony Brook University
    • Stony Brook Theses & Dissertations [SBU]
    • View Item
    •   DSpace Home
    • Stony Brook University
    • Stony Brook Theses & Dissertations [SBU]
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsDepartmentThis CollectionBy Issue DateAuthorsTitlesSubjectsDepartment

    My Account

    LoginRegister

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Higher-Order Modes in the BNL Energy Recovery Linac: Measurement and Waveguide Coupler Design

    Thumbnail
    View/Open
    Johnson_grad.sunysb_0771M_10780.pdf (4.826Mb)
    Date
    1-Dec-11
    Author
    Johnson, Elliott Curtis
    Publisher
    The Graduate School, Stony Brook University: Stony Brook, NY.
    Metadata
    Show full item record
    Abstract
    As in many resonators, higher-order modes (HOMs) occur in particle accelerator radio frequency (RF) cavities. The excitation of these harmonics causes additional heat loads in cryogenic systems and can result in problematic single bunch and multi-bunch effects. It is therefore critical to understand HOM prevalence and structure, and devise a method of extracting their power from the accelerator cavity. Research on these topics is ongoing in the Collider-Accelerator Dept. at Brookhaven National Laboratory (BNL), where the construction of an Energy Recovery Linac is underway. An HOM coupler implementing a dual-ridge waveguide has been designed for use on the next-generation ERL cavity. A full description of the design from its early stages is given, along with simulated analysis of its performance. Also, to better understand resonances occurring in the existing ERL, a measurement routine was developed to characterize and identify HOMs using a bead-pulling technique on a copper prototype cavity. Initial results of these measurements show a good correspondence with the harmonics predicted by the simulation code CST Microwave Studio.
    Description
    59 pg.
    URI
    http://hdl.handle.net/1951/59709
    Collections
    • Stony Brook Theses & Dissertations [SBU] [1955]

    SUNY Digital Repository Support
    DSpace software copyright © 2002-2023  DuraSpace
    Contact Us | Send Feedback
    DSpace Express is a service operated by 
    Atmire NV
     

     


    SUNY Digital Repository Support
    DSpace software copyright © 2002-2023  DuraSpace
    Contact Us | Send Feedback
    DSpace Express is a service operated by 
    Atmire NV