A beam position fiber counter with scintillation fibers and multi-pixel photon counter for high intensity beam operation

Ryotaro Honda, K. Miwa, Y. Matsumoto, N. Chiga, S. Hasegawa, K. Imai

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Abstract A beam position fiber counter consisting of the scintillation fiber (Kuraray SCSF-78 M) and a multi-pixel photon counter (HPK S10362-11-100P) was developed in order to handle a 10 MHz secondary pion beam in the J-PARC E40 experiment. This counter was installed at the entrance of the beam line spectrometer at the K1.8 experimental area in J-PARC and used for the momentum reconstruction. In order to suppress the accidental background and reconstruct the beam momentum, a good timing resolution better than 0.8 ns (σ) and a good position resolution better than 200μm were simultaneously required for the counter. These requirements were well achieved by reading the 320 fibers with a diameter of 1 mm, which were arranged in a staggered position, with MPPC fiber by fiber. The signal induced from each MPPC was handled with an Extended Analogue SiPM Integrated ReadOut Chip (EASIROC) developed by Omega/IN2P3 in France. In addition, the timing of the discriminated signals from EASIROC was measured by a FPGA-based multi-hit TDC implemented into Spartan-6. Finally, we obtained the timing resolution of 0.68 ns (σ) and the position resolution of 190μm (σ) under the 9 MHz beam condition using a pion beam.

本文言語English
論文番号57243
ページ(範囲)157-160
ページ数4
ジャーナルNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
787
DOI
出版ステータスPublished - 2015 8月 1

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 器械工学

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