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Choi, EunMi
THz Vacuum Electronics and Electrodynamics
Research Interests
  • High power millimeter-wave/THz wave, vacuum electronics, plasma breakdown, electron beams, electromagnetics, microwave/RF engineering

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Ferrite-damped higher-order mode study in the Brookhaven energy-recovery linac cavity

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dc.contributor.author Hahn, H. ko
dc.contributor.author Choi, EunMi ko
dc.contributor.author Hammons, L. ko
dc.date.available 2015-03-16T05:29:14Z -
dc.date.created 2014-11-12 ko
dc.date.issued 2009-02 -
dc.identifier.citation PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, v.12, no.2, pp.1 - 8 ko
dc.identifier.issn 1098-4402 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/10875 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=63149085030 ko
dc.description.abstract A superconducting energy-recovery linac (ERL) is under construction at Brookhaven National Laboratory (BNL) to serve as a test bed for an application to upgrades of the Relativistic Heavy Ion Collider (RHIC). The damping of higher-order modes in the superconducting five-cell cavity is of paramount importance and represents the topic of this paper. Achieving the damping by the exclusive use of two ferrite absorbers and the adoption of a space-saving step instead of the conventional taper are part of the exploratory study. Absorber properties which are portable to simulation programs for the ERL cavity have been obtained by measuring the absorber as a ferrite-loaded pill-box cavity. Measured and simulated results for the lowest dipole modes in the prototype copper cavity with one absorber are discussed. First room-temperature measurements of the fully assembled niobium cavity string are presented which confirm the effective damping of higher-order modes by the ferrite absorbers, and which give credibility to the simulated R over Q's in the ERL. ko
dc.description.statementofresponsibility open -
dc.language ENG ko
dc.publisher AMER PHYSICAL SOC ko
dc.title Ferrite-damped higher-order mode study in the Brookhaven energy-recovery linac cavity ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-63149085030 ko
dc.identifier.wosid 000264273800005 ko
dc.type.rims ART ko
dc.description.wostc 1 *
dc.description.scopustc 1 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1103/PhysRevSTAB.12.021002 ko
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