TY - JOUR
T1 - Profile measurement of circulating electrons in a synchrotron by inserting a carbon wire
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.
N1 - Funding Information:
The authors wish to thank the ELPH accelerator staff for providing the primary electron beam under stable conditions. This work was supported in part by Grants-in-Aid for Scientific Research (A), Japan No. 24244022 , for Scientific Research (C) No. 26400287 , and for Scientific Research (A), Japan No. 16H02188 . One of the authors (YO) acknowledges financial support from a Grant-in-Aid for JSPS Fellows, Japan (Grant No. 26-8572 ) and from the ALPS course at the University of Tokyo, Japan . Another (TI) is grateful to Dr. Fusashi Miyahara and Prof. Hirohito Yamazaki for fruitful discussions related to a method to determine the horizontal electron-beam size using the internal radiator.
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/4/1
Y1 - 2019/4/1
N2 - 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.
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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U2 - 10.1016/j.nima.2019.01.007
DO - 10.1016/j.nima.2019.01.007
M3 - Article
AN - SCOPUS:85059821349
VL - 922
SP - 108
EP - 113
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
ER -