Development of a GEM-TPC for H-dibaryon search experiment at J-PARC

H. Sako, J. K. Ahn, K. H. Baek, B. Bassalleck, H. Fujioka, L. Guo, S. Hasegawa, K. Hicks, R. Honda, S. H. Hwang, Y. Ichikawa, M. Ieiri, K. Imai, S. H. Kim, R. Kiuchi, H. S. Lee, K. Nakazawa, M. Naruki, A. Ni, M. NiiyamaK. Ozawa, J. Y. Park, S. Y. Ryu, S. Sato, K. Shirotori, H. Sugimura, M. Sumihara, K. Tanida, H. Takahashi, T. Takahashi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We have developed a GEM-TPC for H-dibaryon search at J-PARC E42, which reconstructs charged particles from the H-dibaryon decay in (K -,K+) reaction. Since 106 cps/cm2 K- beams are injected to the TPC, GEMs and a gating grid are adopted to suppress positive ion feedback. The TPC is also designed to have good position resolutions corresponding to the ΛΛ invariant mass resolution of a few MeV/c2. The design of the E42 TPC, and performance evaluations of a prototype TPC are described.

Original languageEnglish
Article numberC04009
JournalJournal of Instrumentation
Issue number4
Publication statusPublished - 2014 Apr
Externally publishedYes


  • Gaseous detectors
  • Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc)
  • Time projection Chambers (TPC)

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics


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