Test and simulation of a MICROMEGAS detector

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LU Chen-Gui, DUAN Li-Min, XU Hu-Shan, YANG He-Run, HU Rong-Jiang, ZHANG Jin-Xia and LI Zu-Yu. Test and simulation of a MICROMEGAS detector[J]. Chinese Physics C, 2011, 35(11): 1033-1036. doi: 10.1088/1674-1137/35/11/010
LU Chen-Gui, DUAN Li-Min, XU Hu-Shan, YANG He-Run, HU Rong-Jiang, ZHANG Jin-Xia and LI Zu-Yu. Test and simulation of a MICROMEGAS detector[J]. Chinese Physics C, 2011, 35(11): 1033-1036.  doi: 10.1088/1674-1137/35/11/010 shu
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Received: 2011-01-17
Revised: 2011-04-07
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Test and simulation of a MICROMEGAS detector

Abstract: We report on the recent test results of a MICROMEGAS detector in terms of position resolution, time resolution and efficiency. With a Ar + CO2 (10%) gas mixture and a strip pitch of 200 μm an accuracy of 80 μm in sigma on the position has been measured. The time resolution is better than 20 ns and a cosmic ray detection efficiency of 94% was obtained. A Monte Carlo simulation indicates that transverse diffusion, gain fluctuation and electronic noise limit the position resolution.

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