D. Karlen, Bob Carnegie, M. Dixit, J. Dubeau, H. Mes, M. O’Neill, E. Neuheimer, Anna K. Kristofferson, Jeff Mottershead
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Investigation of GEM space point resolution for a TPC tracker
The Gas Electron Multiplier (GEM) is a leading candidate for the readout of the Time Projection Chamber (TPC) at a future linear collider detector. This presentation describes measurements of the space point resolution of a GEM with relatively large hexagonal pads. Resolution of approximately 50 μm is achieved for 4.5 keV x-rays with two independent methods, using charge sharing and using induction signals.
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