A compensated multi-gap RPC with 2 m strips for the LEPS2 experiment

K. Watanabe, S. Tanaka, W. C. Chang, H. Chen, M. L. Chu, J. J. Cuenca-García, Toshiyuki Gogami, D. González-Díaz, M. Niiyama, Y. Ohashi, H. Ohnishi, N. Tomida, M. Yosoi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We have developed multi-gap resistive plate chambers (MRPCs) with 2.5×200 cm 2 readout strips for the time-of-flight (TOF) detector system of the LEPS2 experiment at SPring-8. These chambers consist of two float glass stacks with 5 gas gaps each, in a mirrored configuration. A time resolution of σ≃80 ps was achieved for any position within a strip (at above 99% detection efficiency), improved to 60 ps after correcting for a relatively small time-charge slewing effect. This latter fact seems to stem from the suppression of modal dispersion, achieved through convenient design choices.

Original languageEnglish
Pages (from-to)188-192
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2019 May 1


  • Efficiency
  • MRPC
  • PID
  • Time resolution
  • Time-of-flight

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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