Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire

Y. Obara, T. Ishikawa, H. Hama, F. Hinode, H. Kanda, S. Kashiwagi, M. Miyabe, T. Muto, K. Ozawa, H. Shimizu, A. O. Tokiyasu

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An internal radiator made of a carbon wire is employed to produce bremsstrahlung-photon beams for meson photoproduction experiments from circulating electrons in a synchrotron at the Research Center for Electron Photon Science, Tohoku University. The horizontal electron-beam size at the radiator location is determined from the decay rate of the resultant photon intensity as a function of the distance between the fixed position of the radiator and the centroid of the electron beam. The horizontal beam size at the radiator location is determined to be 0.74 mm with a statical error less than 0.01 mm for 1.3-GeV circulating electrons. The horizontal correlation between the position and momentum direction of the electron beam is also measured. The horizontal size and correlation are well-reproduced by the design values of the parameters of the synchrotron.

Original languageEnglish
Pages (from-to)108-113
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume922
DOIs
Publication statusPublished - 2019 Apr 1

Keywords

  • Electron beam size
  • Internal radiator
  • Meson photoproduction
  • Tagged photon

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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