New design of a tapered-coupler BPM toward simpler geometry and flatter frequency response

T. Toyama, T. Koseki, H. Kuboki, M. Okada, W. Uno, A. Ichikawa, K. Nakamura, T. Nakaya

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

Abstract

The tapered-coupler stripline beam position monitor has been used for the intra-bunch feedback system in the J-PARC MR. It should be realized with a special shaped stripline whose width is tailored exponentially and whose gap distance between the inner surface of the beam pipe should be also decreasing as a exponential function in order to keep the characteristic impedance at 50 ohm. This 3D varying geometry makes it difficult to achieve the good balance between the electrode responses to the beam. We propose a new design method with a groove, which may give simpler geometry and flatter frequency response.

Original languageEnglish
Title of host publicationProceedings of the 6th International Beam Instrumentation Conference, IBIC 2017
PublisherJoint Accelerator Conferences Website (JACoW)
Pages237-239
Number of pages3
ISBN (Electronic)9783954501922
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event6th International Beam Instrumentation Conference, IBIC 2017 - Grand Rapids, United States
Duration: 2017 Aug 202017 Aug 24

Publication series

NameProceedings of the 6th International Beam Instrumentation Conference, IBIC 2017

Conference

Conference6th International Beam Instrumentation Conference, IBIC 2017
CountryUnited States
CityGrand Rapids
Period17/8/2017/8/24

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

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