Author/Authors :
Yamaguchi، نويسنده , , K. and Ishiyama، نويسنده , , H. and Tanaka، نويسنده , , M.H. and Watanabe، نويسنده , , Y.X. and Miyatake، نويسنده , , H. and Hirayama، نويسنده , , Y. and Imai، نويسنده , , N. and Makii، نويسنده , , H. and Fuchi، نويسنده , , Y. and Jeong، نويسنده , , S.C. and Nomura، نويسنده , , T. and Mizoi، نويسنده , , Y. C. Das، نويسنده , , S.K. and Fukuda، نويسنده , , T. and Hashimoto، نويسنده , , T. and Arai، نويسنده , , I.، نويسنده ,
Abstract :
We have developed an active target type gas detector, multi-sampling tracking proportional chamber (MSTPC) for studies of low-energy nuclear reactions such as (α, n) and (α, p). For higher rate capability, a gas electron multiplier (GEM) foil was adopted, instead of a multi-wire proportional counter, as a component of the MSTPC. We studied the basic properties of gas gain in a 400 μm thick GEM (THGEM), which was compared to those of standard CERN GEMs. The THGEM was examined for gain instability and positive-ion feedback, especially with low-pressure He-base mixed gas. The THGEM was found to be applicable as a proportional counter using our gas target and He as the operating gas.
Keywords :
Ion Feedback , Active target , Gas electron multiplier , GEM , THGEM
