TY - JOUR
T1 - A fast profile monitor with scintillating fiber hodoscopes for high-intensity photon beams
AU - Ishikawa, T.
AU - Fujimura, H.
AU - Hamano, H.
AU - Hashimoto, R.
AU - Honda, Y.
AU - Ishida, T.
AU - Kaida, S.
AU - Kanda, H.
AU - Kido, S.
AU - Matsumura, Y.
AU - Miyabe, M.
AU - Mizutani, K.
AU - Nagasawa, I.
AU - Nakamura, A.
AU - Nanbu, K.
AU - Nawa, K.
AU - Ogushi, S.
AU - Shibasaki, Y.
AU - Shimizu, H.
AU - Sugai, H.
AU - Suzuki, K.
AU - Takahashi, K.
AU - Takahashi, S.
AU - Taniguchi, Y.
AU - Tokiyasu, A. O.
AU - Tsuchikawa, Y.
AU - Yamazaki, H.
N1 - Funding Information:
The authors are grateful to the ELPH accelerator staff for providing the primary electron beam with good quality. They also give K. Matsuda their sincere gratitude for his technical support in preparation for the measurements. This work was supported in part by Grants-in-Aid for Scientific Research (B) ( 17340063 ), for Specially Promoted Research ( 19002003 ), for Scientific Research (A) ( 24244022 ), and for Scientific Research (C) ( 26400287 ).
Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - A fast beam-profile monitor has been developed for high-energy photon beamlines at the Research Center for Electron Photon Science, Tohoku University. The position of the photon converted into an electron-positron pair in a 0.5 mm-thick aluminum plate is measured with two hodoscopes made of scintillating fibers with cross-sections of 3×3mm2. Events in which charged particles are produced upstream are rejected with a charge veto plastic scintillator placed in front of the plate, and pair-production events are identified with a trigger plastic scintillator placed behind the plate. The position is determined by a developed logic module with a field-programmable gate array. The dead time for processing an event is 35 ns, and a high data acquisition efficiency (~100%) can be achieved with this monitor for high-intensity photon beams corresponding to 20 MHz tagging signals.
AB - A fast beam-profile monitor has been developed for high-energy photon beamlines at the Research Center for Electron Photon Science, Tohoku University. The position of the photon converted into an electron-positron pair in a 0.5 mm-thick aluminum plate is measured with two hodoscopes made of scintillating fibers with cross-sections of 3×3mm2. Events in which charged particles are produced upstream are rejected with a charge veto plastic scintillator placed in front of the plate, and pair-production events are identified with a trigger plastic scintillator placed behind the plate. The position is determined by a developed logic module with a field-programmable gate array. The dead time for processing an event is 35 ns, and a high data acquisition efficiency (~100%) can be achieved with this monitor for high-intensity photon beams corresponding to 20 MHz tagging signals.
KW - Beam profile monitor
KW - Meson photo-production
KW - Tagged photon beam
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U2 - 10.1016/j.nima.2015.12.027
DO - 10.1016/j.nima.2015.12.027
M3 - Article
AN - SCOPUS:84952361262
SN - 0168-9002
VL - 811
SP - 124
EP - 132
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
ER -