Development of a Time Projection Chamber Using Gas Electron Multipliers (GEM-TPC)
S. X. Oda, H. Hamagaki, K. Ozawa, M. Inuzuka, T. Sakaguchi, T. Isobe, T. Gunji, Y. Morino, S. Saito, Y. L. Yamaguchi, S. Sawada, S. Yokkaichi
Abstract
We developed a prototype time projection chamber using gas electron multipliers (GEM-TPC) for high energy heavy ion collision experiments. To investigate its performance, we conducted a beam test with 3 kinds of gases (Ar(90%)-CH4(10%), Ar(70%)-C2H6(30%) and CF4). Detection efficiency of 99%, and spatial resolution of 79 μm in the pad-row direction and 313 μm in the drift direction were achieved. The test results show that the GEM-TPC meets the requirements for high energy heavy ion collision experiments. The configuration and performance of the GEM-TPC are described.
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