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

doi:10.1016/j.nima.2019.01.007

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 journal › Article

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 language	English
Pages (from-to)	108-113
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	922
DOIs	https://doi.org/10.1016/j.nima.2019.01.007
Publication status	Published - 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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Obara, Y., Ishikawa, T., Hama, H., Hinode, F., Kanda, H., Kashiwagi, S., Miyabe, M., Muto, T., Ozawa, K., Shimizu, H., & Tokiyasu, A. O. (2019). Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 922, 108-113. https://doi.org/10.1016/j.nima.2019.01.007

Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire. / Obara, Y.; Ishikawa, T.; Hama, H.; Hinode, F.; Kanda, H.; Kashiwagi, S.; Miyabe, M.; Muto, T.; Ozawa, K.; Shimizu, H.; Tokiyasu, A. O.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 922, 01.04.2019, p. 108-113.

Research output: Contribution to journal › Article

Obara, Y, Ishikawa, T , Hama, H , Hinode, F, Kanda, H, Kashiwagi, S , Miyabe, M , Muto, T, Ozawa, K, Shimizu, H & Tokiyasu, AO 2019, 'Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 922, pp. 108-113. https://doi.org/10.1016/j.nima.2019.01.007

Obara, Y. ; Ishikawa, T. ; Hama, H. ; Hinode, F. ; Kanda, H. ; Kashiwagi, S. ; Miyabe, M. ; Muto, T. ; Ozawa, K. ; Shimizu, H. ; Tokiyasu, A. O. / Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2019 ; Vol. 922. pp. 108-113.

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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.",

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AU - Obara, Y.

AU - Ishikawa, T.

AU - Hama, H.

AU - Hinode, F.

AU - Kanda, H.

AU - Kashiwagi, S.

AU - Miyabe, M.

AU - Muto, T.

AU - Ozawa, K.

AU - Shimizu, H.

AU - Tokiyasu, A. O.

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AB - 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.

KW - Electron beam size

KW - Internal radiator

KW - Meson photoproduction

KW - Tagged photon

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