Electronic Damping of Microphonics in Superconducting Cavities Metadata

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Title

  • Main Title Electronic Damping of Microphonics in Superconducting Cavities

Creator

  • Author: Delayen, J.R.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research (ER) (United States)

Publisher

  • Name: Thomas Jefferson National Accelerator Facility (U.S.)
    Place of Publication: Newport News, Virginia
    Additional Info: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

Date

  • Creation: 2001-06-01

Language

  • English

Description

  • Content Description: In previous applications of high-velocity superconducting cavities the accelerated beam currents were sufficiently high that the microphonics-induced frequency excursions were significantly less than the loaded bandwidth, and the power absorbed by the beam dominated the total power requirement. In new applications (CEBAF Upgrade, RIA) the beam currents will be sufficiently low that the RF power requirements will be dominated by the control of the cavity fields in the presence of microphonics. Active electronic damping of microphonics by modulation of the cavity field amplitude has been occasionally used in the past in small, low-velocity, low-gradient superconducting structures; its application to much larger, high-velocity, high-gradient structures could result in a substantial reduction of the RF power requirements. This paper presents an analytical study of various schemes for electronic damping and presents formulae that quantify the reduction of microphonics as a function of RF field amplitude modulation.
  • Physical Description: 184 Kilobytes pages

Subject

  • Keyword: Rf Systems
  • Keyword: Frequency Control
  • Keyword: Cebaf Accelerator
  • STI Subject Categories: 43 Particle Accelerators
  • Keyword: Superconducting Cavity Resonators
  • Keyword: Modulation
  • Keyword: Damping
  • Keyword: Beam Currents

Source

  • Conference: PAC 2001, Chicago, IL (US), 06/18/2001--06/22/2001

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: JLAB-ACT-01-11
  • Report No.: DOE/ER/40150-1885
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 783670
  • Archival Resource Key: ark:/67531/metadc717322
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