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

H Sako ,L Guo ,Hiroyuki Fujioka ,H S Lee ,K Ozawa ,A Ni ,K Tanida ,K Hicks ,M Naruki ,S H Hwang ,M Niiyama ,R Kiuchi ,K Shirotori ,Sun Young Ryu ,Hitoshi Sugimura ,Shoichi Hasegawa ,Jung Keun Ahn ,S H Kim ,M Ieiri ,J Y Park ,Ryumon Honda ,Y Ichikawa ,Hajime Takahashi ,M Sumihara ,B Bassalleck ,Kimitaka Nakazawa ,Kang Hyun Baek ,K Imai ,Susumu Sato ,T Takahashi

doi:10.1088/1748-0221/9/04/c04009

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

H Sako , L Guo + Show 28 more

https://doi.org/10.1088/1748-0221/9/04/c04009

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Journal: Journal of Instrumentation	Publication Date: Apr 1, 2014
Citations: 3

Affiliation: Japan Atomic Energy Agency, National University, Kyoto University, Pusan National University, High Energy Accelerator Research Organization, Seoul National University, Ohio University, Osaka University, Tohoku University, Gifu University, University of New Mexico

#Gating Grid #Good Resolutions + Show 8 more

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Abstract

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.

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