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

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

来源：Journal of Instrumentation, 2014, 9(04): C04009.

DOI：10.1088/1748-0221/9/04/C04009

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

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 10(6) cps/cm(2) 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 Lambda Lambda invariant mass resolution of a few MeV/c(2). The design of the E42 TPC, and performance evaluations of a prototype TPC are described.

• 出版日期2014-4